Apa itu penginderaan jauh? Lalu, apa pula yang dimaksud dengan interpretasi citra? Eits, tenang aja, di artikel Geografi kelas 10 ini kamu bisa menemukan jawabannya!
—
Kalau kita lagi berpergian jauh ke suatu tempat yang belum pernah kita kunjungi, biasanya alat apa yang kita butuhkan untuk mengetahui lokasi kita berada, serta arah yang harus kita tuju? Yap, betul! Jawabannya adalah peta! Eh, tapi kalau jaman sekarang sih, udah pakai peta digital ya, udah bukan peta cetak lagi.
Nah, tahu nggak sih, peta digital yang ada di smartphone kita itu, dibuat menggunakan penginderaan jauh serta interpretasi citra, lho! Apa yang dimaksud dengan penginderaan jauh dan interpretasi citra? Yuk, langsung aja kita bahas!
Pengertian Penginderaan Jauh
Penginderaan jauh adalah suatu teknik untuk memperoleh informasi tentang suatu objek atau fenomena di permukaan bumi tanpa kontak langsung dengan objek tersebut, melainkan melalui sensor yang menangkap radiasi elektromagnetik. Penginderaan jauh disebut sebagai remote sensing dalam bahasa Inggris.
Proses penginderaan jauh melibatkan pemantauan dan pengumpulan data tentang objek di permukaan bumi dari jarak jauh, tanpa adanya kontak langsung, melalui sensor yang menangkap energi elektromagnetik yang dipantulkan atau dipancarkan oleh objek tersebut.
Sedangkan pengertian penginderaan jauh menurut para ahli antara lain sebagai berikut:
- Menurut Lillesand dan Kiefer (1994), penginderaan jauh adalah ilmu dan seni untuk memperoleh informasi tentang suatu objek, area, atau fenomena melalui analisis data yang diperoleh dengan perangkat tanpa kontak langsung.
- Menurut Curran (1985), proses penginderaan jauh mencakup akuisisi dan analisis informasi tentang bumi dari kejauhan, menggunakan sistem sensor.
Baca Juga: Jenis-Jenis Peta berdasarkan Skala, Isi, dan Bentuknya
Berikut adalah contoh gambar penginderaan jauh.
Gambar penginderaan jauh (Sumber: ariefcasanova.com)
Komponen Penginderaan Jauh
Komponen-komponen penginderaan jauh yang berperan dalam proses akuisisi data, antara lain:
-
Sumber Tenaga: Merupakan energi yang digunakan untuk mendeteksi objek, biasanya berupa sinar matahari atau gelombang buatan.
-
Atmosfer: Lapisan udara yang dapat mempengaruhi penyebaran dan penyerapan energi elektromagnetik.
-
Objek: Merupakan benda atau fenomena di permukaan bumi yang menjadi target observasi.
-
Sensor: Alat yang digunakan untuk menangkap energi pantulan atau pancaran dari objek.
-
Wahana: Kendaraan yang membawa sensor, seperti satelit, pesawat udara, atau drone.
-
Detektor: Perangkat yang merekam data hasil pengukuran sensor.
-
Data: Informasi yang dikumpulkan dari penginderaan jauh dalam bentuk citra.
-
Pengguna: Pihak yang memanfaatkan data hasil penginderaan jauh untuk berbagai keperluan.
Manfaat Penginderaan Jauh
Penginderaan jauh memiliki banyak manfaat di berbagai bidang, antara lain:
1. Bidang Pertanian
Manfaat penginderaan jauh di bidang pertanian adalah:
- Menentukan jenis tanaman yang cocok berdasarkan kondisi lahan.
- Memantau pertumbuhan tanaman dan mendeteksi hama atau penyakit.
- Mengestimasi hasil panen dengan analisis citra penginderaan jauh.
2. Bidang Kehutanan
Manfaat penginderaan jauh di bidang kehutanan adalah:
- Mengidentifikasi luas hutan dan perubahan vegetasi.
- Mendeteksi deforestasi dan kebakaran hutan.
- Memantau konservasi hutan lindung dan taman nasional.
3. Bidang Hidrologi
Manfaat penginderaan jauh di bidang hidrologi adalah:
- Mengamati pola arus laut dan sedimentasi di pesisir.
- Memonitor pencemaran air dan ekosistem perairan.
- Untuk mendeteksi perubahan debit sungai dan risiko banjir.
4. Bidang Kebencanaan
Manfaat penginderaan jauh di bidang kebencanaan adalah:
- Mendeteksi daerah rawan bencana seperti longsor dan gempa bumi.
- Memantau dampak bencana dan mempercepat proses mitigasi.
5. Bidang Meteorologi
Manfaat penginderaan jauh di bidang meteorologi adalah:
- Memantau kondisi cuaca dan iklim secara global.
- Menganalisis pola angin, hujan, dan badai.
Hasil atau Keluaran Penginderaan Jauh
Hasil atau keluaran penginderaan jauh adalah data dalam bentuk citra, grafik, atau peta tematik yang menggambarkan informasi permukaan bumi. Data ini dapat digunakan dalam sistem informasi geografis (SIG) untuk berbagai analisis lebih lanjut.
Baca Juga: Seisme (Gempa Bumi): Pengertian, Jenis & Dampaknya
Nah, untuk menafsirkan foto citra yang dihasilkan, maka perlu adanya interpretasi citra. Apa itu interpretasi citra?
Pengertian Interpretasi Citra
Interpretasi citra adalah proses menganalisis citra penginderaan jauh untuk mengidentifikasi objek atau fenomena di permukaan bumi. Analisis ini melibatkan berbagai teknik untuk memperoleh informasi yang akurat.
Jenis Interpretasi Citra
1. Citra Foto
Seperti namanya, foto adalah sebuah objek yang dibuat dari pesawat dengan menggunakan kamera konvensional sebagai alat potret, seperti foto udara.
Biasanya foto ini digunakan untuk melihat kondisi lapangan secara langsung, bisa juga digunakan untuk melakukan pemetaan kontur, mengukur kepadatan, melihat vegetasi, atau melihat tumpahan minyak di laut.
2. Citra Nonfoto
Citra Nonfoto adalah citra yang diperoleh melalui sensor khusus, seperti radar dan citra satelit.
Untuk lebih memahami perbedaan antara citra foto dan citra nonfoto, kamu bisa perhatikan tabel berikut ini:
Variabel Pembeda
Citra Foto
Citra Nonfoto
Sensor
Kamera
Nonkamera, berdasarkan penyiaman (
scanning) kamera yang detektornya bukan film.
Detektor
Film
Pita magnetik, thermistor, foto konduktif, fota voltalk, dan sebagainya.
Proses Perekaman
Fotografi / Kimiawi
Elektronik
Mekanisme Perekaman
Serentak
Parsial
Spektrum Elektromagnetik
Spektrum tampak
Spektranya tampak dan perluasannya termal & gelombang mikro.
Tahap Interpretasi Citra
Tahap interpretasi citra meliputi beberapa langkah berikut:
-
Deteksi: Mengidentifikasi objek berdasarkan perbedaan rona dan tekstur.
-
Identifikasi: Menentukan jenis objek berdasarkan karakteristiknya.
-
Analisis: Mengkaji hubungan antara objek satu dengan lainnya.
-
Deduksi: Menyimpulkan informasi dari hasil analisis citra.
Unsur Interpretasi Citra
Beberapa unsur interpretasi citra yang digunakan dalam analisis adalah:
-
Bentuk: Kontur atau konfigurasi suatu objek pada citra. Contoh: gedung sekolah biasanya menyerupai huruf I, L, atau U.
-
Situs: Letak suatu objek terhadap daerah di sekitarnya. Contoh: pemukiman umumnya terletak di sepanjang jalan raya.
-
Pola: Susunan objek yang menunjukkan keteraturan tertentu. Contoh: pemukiman memiliki pola yang teratur dan seragam.
-
Asosiasi: Keterikatan antara objek yang satu dengan objek lainnya. Contoh: stasiun kereta api berasosiasi dengan jalur rel kereta api.
-
Tekstur: Pola kasar atau halus pada citra. Contoh: hutan bertekstur kasar, sedangkan semak-semak bertekstur halus.
-
Bayangan: Digunakan untuk menentukan ketinggian suatu objek. Contoh: lereng terjal yang tampak lebih jelas dengan adanya bayangan.
-
Rona: Tingkat kecerahan objek pada citra. Contoh: jalanan akan lebih gelap dari tanah lapang.
-
Ukuran: Besar atau kecilnya objek relatif terhadap lingkungan sekitarnya. Contoh: stadium olahraga memiliki ukuran yang jauh lebih besar dibandingkan pemukiman di sekitarnya.
Untuk memudahkan kamu menghafal unsur-unsur interpretasi citra di atas, kamu bisa menggunakan jembatan keledai atau rumus cepat hafalan sebagai berikut:
Baca Juga: Cara Mengetahui Kondisi Sumber Daya Manusia
Contoh Interpretasi Citra
Contoh interpretasi citra dalam kehidupan nyata adalah:
- Menggunakan citra satelit untuk mengidentifikasi kawasan hutan yang mengalami deforestasi.
- Mengamati perubahan garis pantai akibat abrasi atau reklamasi.
- Mendeteksi genangan air akibat banjir menggunakan citra radar.
- Menganalisis pertumbuhan kota dan urbanisasi dengan membandingkan citra dari tahun ke tahun.
—
Penginderaan jauh dan interpretasi citra adalah metode efektif untuk memperoleh informasi mengenai permukaan bumi, serta mengidentifikasi objek atau fenomena di permukaan bumi. Dengan komponen-komponennya yang lengkap, teknologi ini memberikan manfaat besar di berbagai bidang, termasuk pertanian, kehutanan, hidrologi, kebencanaan, hingga meteorologi.
Bagi kamu yang tertarik dengan segala hal berbau geografi dan fisika, seperti halnya penginderaan jauh dan interpretasi citra, kamu bisa lho belajar lebih jauh melalui aplikasi Ruangguru! Yuk, tonton video belajarnya sekarang!
Artikel ini pertama kali ditulis oleh Seno Aji pada 26 Juni 2018, kemudian diperbarui oleh Kenya Swawikanti.
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<h1 class="content-title">
Yuk, Mengenal Penginderaan Jauh dan Interpretasi Citra! | Geografi Kelas 10 </h1>
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<p class="content-author"><a href="https://www.ruangguru.com/blog/author/kenya-swawikanti" class="">Kenya Swawikanti</a> </p>
<p class="content-info"><span>September 8, 2025 • </span> <span>6 minutes read</span></p>
<br />
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<p><img decoding="async" class="aligncenter size-medium" src="https://cdn-web-2.ruangguru.com/landing-pages/assets/d3f19676-4e26-48b2-909b-fb2d43f3b616.png" alt="Pengindraan Jauh & Interpretasi Citra" /></p>
<blockquote>
<p style="text-align: center;"><em>Apa itu penginderaan jauh? Lalu, apa pula yang dimaksud dengan interpretasi citra? Eits, tenang aja, di <strong><a href="https://www.ruangguru.com/blog/c/geografi/geografi-sma-kelas-10" target="_blank" rel="noopener">artikel Geografi kelas 10</a></strong> ini kamu bisa menemukan jawabannya!</em></p>
</blockquote>
<p style="text-align: center;">—</p>
<p> </p>
<p style="text-align: justify;"><span style="font-weight: 400;">Kalau kita lagi berpergian jauh ke suatu tempat yang belum pernah kita kunjungi, biasanya alat apa yang kita butuhkan untuk mengetahui lokasi kita berada, serta arah yang harus kita tuju? Yap, betul! Jawabannya adalah peta! Eh, tapi kalau jaman sekarang sih, udah pakai peta digital ya, udah bukan peta cetak lagi.</span></p>
<p style="text-align: justify;"><span style="font-weight: 400;">Nah, tahu nggak sih, peta digital yang ada di </span><i><span style="font-weight: 400;">smartphone </span></i><span style="font-weight: 400;">kita itu, dibuat menggunakan penginderaan jauh serta interpretasi citra, lho! Apa yang dimaksud dengan penginderaan jauh dan interpretasi citra? Yuk, langsung aja kita bahas!</span></p>
<p> </p>
<h2><span style="font-size: 18pt;">Pengertian Penginderaan Jauh</span></h2>
<p style="text-align: justify;"><span style="font-weight: 400;">Penginderaan jauh adalah suatu teknik untuk memperoleh informasi tentang suatu objek atau fenomena di permukaan bumi tanpa kontak langsung dengan objek tersebut, melainkan melalui sensor yang menangkap radiasi elektromagnetik. Penginderaan jauh disebut sebagai</span> <strong><em>remote sensing</em></strong><span style="font-weight: 400;"> dalam bahasa Inggris.</span></p>
<p style="text-align: justify;"><span style="font-weight: 400;">Proses penginderaan jauh melibatkan pemantauan dan pengumpulan data tentang objek di permukaan bumi dari jarak jauh, tanpa adanya kontak langsung, melalui sensor yang menangkap energi elektromagnetik yang dipantulkan atau dipancarkan oleh objek tersebut.</span></p>
<p style="text-align: justify;"><span style="font-weight: 400;">Sedangkan pengertian penginderaan jauh menurut para ahli antara lain sebagai berikut:</span></p>
<ul style="text-align: justify;">
<li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">Menurut<strong> Lillesand dan Kiefer</strong> (1994), penginderaan jauh adalah ilmu dan seni untuk memperoleh informasi tentang suatu objek, area, atau fenomena melalui analisis data yang diperoleh dengan perangkat tanpa kontak langsung. </span></li>
<li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">Menurut <strong>Curran</strong> (1985), proses penginderaan jauh mencakup akuisisi dan analisis informasi tentang bumi dari kejauhan, menggunakan sistem sensor.</span></li>
</ul>
<p> </p>
<p style="text-align: justify;"><strong>Baca Juga: <a href="https://www.ruangguru.com/blog/jenis-jenis-peta-dan-penggunaannya" target="_blank" rel="noopener">Jenis-Jenis Peta berdasarkan Skala, Isi, dan Bentuknya</a></strong></p>
<p style="text-align: justify;"><span style="font-weight: 400;">Berikut adalah contoh gambar penginderaan jauh.</span></p>
<p><img decoding="async" class="aligncenter size-medium" src="https://cdn-web-2.ruangguru.com/landing-pages/assets/c9d76643-618d-457e-92e7-5b6961fb4ead.jpg" alt="Gambar Pengindraan Jauh" /></p>
<p style="text-align: center;"><em>Gambar penginderaan jauh (Sumber: ariefcasanova.com)</em></p>
<p> </p>
<h2 style="text-align: justify;"><span style="font-size: 18pt;"><b>Komponen Penginderaan Jauh</b></span></h2>
<p style="text-align: justify;"><span style="font-weight: 400;">Komponen-komponen penginderaan jauh yang berperan dalam proses akuisisi data, antara lain:</span></p>
<ul>
<li style="text-align: justify;"><strong>Sumber Tenaga</strong><span style="font-weight: 400;">: Merupakan energi yang digunakan untuk mendeteksi objek, biasanya berupa sinar matahari atau gelombang buatan.</span></li>
<li style="text-align: justify;" aria-level="1"><strong>Atmosfer</strong><span style="font-weight: 400;">: Lapisan udara yang dapat mempengaruhi penyebaran dan penyerapan energi elektromagnetik.</span></li>
<li style="text-align: justify;" aria-level="1"><strong>Objek</strong><span style="font-weight: 400;">: Merupakan benda atau fenomena di permukaan bumi yang menjadi target observasi.</span></li>
<li style="text-align: justify;" aria-level="1"><strong>Sensor</strong><span style="font-weight: 400;">: Alat yang digunakan untuk menangkap energi pantulan atau pancaran dari objek.</span></li>
<li style="text-align: justify;" aria-level="1"><strong>Wahana</strong><span style="font-weight: 400;">: Kendaraan yang membawa sensor, seperti satelit, pesawat udara, atau </span><i><span style="font-weight: 400;">drone</span></i><span style="font-weight: 400;">.</span></li>
<li style="text-align: justify;" aria-level="1"><strong>Detektor</strong><span style="font-weight: 400;">: Perangkat yang merekam data hasil pengukuran sensor.</span></li>
<li style="text-align: justify;" aria-level="1"><strong>Data</strong><span style="font-weight: 400;">: Informasi yang dikumpulkan dari penginderaan jauh dalam bentuk citra.</span></li>
<li style="text-align: justify;" aria-level="1"><strong>Pengguna</strong><span style="font-weight: 400;">: Pihak yang memanfaatkan data hasil penginderaan jauh untuk berbagai keperluan.</span></li>
</ul>
<p> </p>
<h2 style="text-align: justify;"><span style="font-size: 18pt;"><b>Manfaat Penginderaan Jauh</b></span></h2>
<p style="text-align: justify;"><span style="font-weight: 400;">Penginderaan jauh memiliki banyak manfaat di berbagai bidang, antara lain:</span></p>
<p> </p>
<h3 style="text-align: justify;"><span style="font-size: 14pt;"><b>1. Bidang Pertanian</b></span></h3>
<p style="text-align: justify;"><span style="font-weight: 400;">Manfaat penginderaan jauh di bidang pertanian adalah:</span></p>
<ul style="text-align: justify;">
<li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">Menentukan jenis tanaman yang cocok berdasarkan kondisi lahan.</span></li>
<li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">Memantau pertumbuhan tanaman dan mendeteksi hama atau penyakit.</span></li>
<li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">Mengestimasi hasil panen dengan analisis citra penginderaan jauh.</span></li>
</ul>
<p> </p>
<h3 style="text-align: justify;"><span style="font-size: 14pt;"><b>2. Bidang Kehutanan</b></span></h3>
<p style="text-align: justify;"><span style="font-weight: 400;">Manfaat penginderaan jauh di bidang kehutanan adalah:</span></p>
<ul style="text-align: justify;">
<li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">Mengidentifikasi luas hutan dan perubahan vegetasi.</span></li>
<li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">Mendeteksi deforestasi dan kebakaran hutan.</span></li>
<li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">Memantau konservasi hutan lindung dan taman nasional.</span></li>
</ul>
<p> </p>
<h3 style="text-align: justify;"><span style="font-size: 14pt;"><b>3. Bidang Hidrologi</b></span></h3>
<p style="text-align: justify;"><span style="font-weight: 400;">Manfaat penginderaan jauh di bidang hidrologi adalah:</span></p>
<ul style="text-align: justify;">
<li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">Mengamati pola arus laut dan sedimentasi di pesisir.</span></li>
<li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">Memonitor pencemaran air dan ekosistem perairan.</span></li>
<li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">Untuk mendeteksi perubahan debit sungai dan risiko banjir.</span></li>
</ul>
<p> </p>
<h3 style="text-align: justify;"><span style="font-size: 14pt;"><b>4. Bidang Kebencanaan</b></span></h3>
<p style="text-align: justify;"><span style="font-weight: 400;">Manfaat penginderaan jauh di bidang kebencanaan adalah:</span></p>
<ul style="text-align: justify;">
<li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">Mendeteksi daerah rawan bencana seperti longsor dan gempa bumi.</span></li>
<li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">Memantau dampak bencana dan mempercepat proses mitigasi.</span></li>
</ul>
<p> </p>
<h3 style="text-align: justify;"><span style="font-size: 14pt;"><b>5. Bidang Meteorologi</b></span></h3>
<p style="text-align: justify;"><span style="font-weight: 400;">Manfaat penginderaan jauh di bidang meteorologi adalah:</span></p>
<ul style="text-align: justify;">
<li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">Memantau kondisi cuaca dan iklim secara global.</span></li>
<li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">Menganalisis pola angin, hujan, dan badai.</span></li>
</ul>
<p> </p>
<h2><span style="font-size: 18pt;"><b>Hasil atau Keluaran Penginderaan Jauh</b></span></h2>
<p style="text-align: justify;"><span style="font-weight: 400;">Hasil atau keluaran penginderaan jauh adalah data dalam bentuk citra, grafik, atau peta tematik yang menggambarkan informasi permukaan bumi. Data ini dapat digunakan dalam sistem informasi geografis (SIG) untuk berbagai analisis lebih lanjut. </span></p>
<p style="text-align: justify;"><strong>Baca Juga: <a href="https://www.ruangguru.com/blog/mengenal-seisme-dan-klasifikasinya" target="_blank" rel="noopener">Seisme (Gempa Bumi): Pengertian, Jenis & Dampaknya</a></strong></p>
<p style="text-align: justify;"><span style="font-weight: 400;">Nah, untuk menafsirkan foto citra yang dihasilkan, maka perlu adanya interpretasi citra. Apa itu interpretasi citra?</span></p>
<p> </p>
<h2 style="text-align: justify;"><span style="font-size: 18pt;"><b>Pengertian Interpretasi Citra</b></span></h2>
<p style="text-align: justify;"><span style="font-weight: 400;">Interpretasi citra adalah proses menganalisis citra penginderaan jauh untuk mengidentifikasi objek atau fenomena di permukaan bumi. Analisis ini melibatkan berbagai teknik untuk memperoleh informasi yang akurat.</span></p>
<p> </p>
<h2 style="text-align: justify;"><span style="font-size: 18pt;"><b>Jenis Interpretasi Citra</b></span></h2>
<h3 style="text-align: justify;"><span style="font-size: 14pt;"><strong>1. Citra Foto</strong></span></h3>
<p style="text-align: justify;">Seperti namanya, <strong>foto adalah sebuah objek yang dibuat dari pesawat dengan menggunakan kamera konvensional sebagai alat potret, seperti foto udara</strong>.</p>
<p style="text-align: justify;">Biasanya foto ini digunakan untuk melihat kondisi lapangan secara langsung, bisa juga digunakan untuk melakukan pemetaan kontur, mengukur kepadatan, melihat vegetasi, atau melihat tumpahan minyak di laut.</p>
<p><img decoding="async" style="width: 600px; display: block; margin: 0px auto;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/10GEO_-_Jenis_Citra_Penginderaan_Jauh_dan_Interpretasi_Citra-03.png" alt="penginderaan jauh dan interpretasi citra" width="600" /></p>
<p> </p>
<h3 style="text-align: justify;">2.<span style="font-size: 14pt;"><strong> Citra Nonfoto</strong></span></h3>
<p style="text-align: justify;"><strong>Citra Nonfoto </strong>adalah <strong>c</strong><span style="font-weight: 400;"><strong>itra yang diperoleh melalui sensor khusus, seperti radar dan citra satelit</strong>. </span></p>
<p><img decoding="async" style="width: 600px; display: block; margin: 0px auto;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/10GEO_-_Jenis_Citra_Penginderaan_Jauh_dan_Interpretasi_Citra-02.png" alt="penginderaan jauh dan interpretasi citra" width="600" /></p>
<p> </p>
<p><span style="font-weight: 400;">Untuk lebih memahami perbedaan antara citra foto dan citra nonfoto, kamu bisa perhatikan tabel berikut ini:</span></p>
<p><img decoding="async" style="width: 600px; display: block; margin: 0px auto;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/10GEO_-_Jenis_Citra_Penginderaan_Jauh_dan_Interpretasi_Citra-04.png" alt="penginderaan jauh dan interpretasi citra" width="600" /></p>
<p> </p>
<p> </p>
<table class=" aligncenter" style="width: 94.3807%;">
<tbody>
<tr>
<td style="text-align: center; width: 22.8916%;"><strong>Variabel Pembeda</strong></td>
<td style="text-align: center; width: 14.3574%;"><strong>Citra Foto</strong></td>
<td style="text-align: center; width: 61.9478%;"><strong>Citra Nonfoto</strong></td>
</tr>
<tr>
<td style="width: 22.8916%;"><strong>Sensor </strong></td>
<td style="width: 14.3574%;"><span style="font-weight: 400;">Kamera </span></td>
<td style="width: 61.9478%;"><span style="font-weight: 400;">Nonkamera, berdasarkan penyiaman (</span><i><span style="font-weight: 400;">scanning</span></i><span style="font-weight: 400;">) kamera yang detektornya bukan film.</span></td>
</tr>
<tr>
<td style="width: 22.8916%;"><strong>Detektor </strong></td>
<td style="width: 14.3574%;"><span style="font-weight: 400;">Film</span></td>
<td style="width: 61.9478%;"><span style="font-weight: 400;">Pita magnetik, thermistor, foto konduktif, fota voltalk, dan sebagainya.</span></td>
</tr>
<tr>
<td style="width: 22.8916%;"><strong>Proses Perekaman</strong></td>
<td style="width: 14.3574%;"><span style="font-weight: 400;">Fotografi / Kimiawi</span></td>
<td style="width: 61.9478%;"><span style="font-weight: 400;">Elektronik</span></td>
</tr>
<tr>
<td style="width: 22.8916%;"><strong>Mekanisme Perekaman</strong></td>
<td style="width: 14.3574%;"><span style="font-weight: 400;">Serentak </span></td>
<td style="width: 61.9478%;"><span style="font-weight: 400;">Parsial </span></td>
</tr>
<tr>
<td style="width: 22.8916%;"><strong>Spektrum Elektromagnetik</strong></td>
<td style="width: 14.3574%;"><span style="font-weight: 400;">Spektrum tampak</span></td>
<td style="width: 61.9478%;"><span style="font-weight: 400;">Spektranya tampak dan perluasannya termal & gelombang mikro. </span></td>
</tr>
</tbody>
</table>
<p> </p>
<h2 style="text-align: justify;"><span style="font-size: 18pt;">Tahap Interpretasi Citra</span></h2>
<p style="text-align: justify;"><span style="font-weight: 400;">Tahap interpretasi citra meliputi beberapa langkah berikut:</span></p>
<ol>
<li><strong>Deteksi</strong><span style="font-weight: 400;">: Mengidentifikasi objek berdasarkan perbedaan rona dan tekstur.</span></li>
<li><strong>Identifikasi</strong>: Menentukan jenis objek berdasarkan karakteristiknya.</li>
<li><strong>Analisis</strong>: Mengkaji hubungan antara objek satu dengan lainnya.</li>
<li><strong>Deduksi</strong>: Menyimpulkan informasi dari hasil analisis citra.</li>
</ol>
<p> </p>
<h2 style="text-align: justify;"><span style="font-size: 18pt;"><b>Unsur Interpretasi Citra</b></span></h2>
<p style="text-align: justify;"><span style="font-weight: 400;">Beberapa unsur interpretasi citra yang digunakan dalam analisis adalah:</span></p>
<ol>
<li style="text-align: justify;"><strong>Bentuk</strong><span style="font-weight: 400;">: Kontur atau konfigurasi suatu objek pada citra. Contoh: gedung sekolah biasanya menyerupai huruf I, L, atau U.</span></li>
<li style="text-align: justify;"><strong>Situs</strong>: Letak suatu objek terhadap daerah di sekitarnya. Contoh: pemukiman umumnya terletak di sepanjang jalan raya.</li>
<li style="text-align: justify;"><strong>Pola</strong>: Susunan objek yang menunjukkan keteraturan tertentu. Contoh: pemukiman memiliki pola yang teratur dan seragam.</li>
<li style="text-align: justify;"><strong>Asosiasi</strong>: Keterikatan antara objek yang satu dengan objek lainnya. Contoh: stasiun kereta api berasosiasi dengan jalur rel kereta api.</li>
<li style="text-align: justify;"><strong>Tekstur</strong>: Pola kasar atau halus pada citra. Contoh: hutan bertekstur kasar, sedangkan semak-semak bertekstur halus.</li>
<li style="text-align: justify;"><strong>Bayangan</strong>: Digunakan untuk menentukan ketinggian suatu objek. Contoh: lereng terjal yang tampak lebih jelas dengan adanya bayangan.</li>
<li style="text-align: justify;"><strong>Rona</strong>: Tingkat kecerahan objek pada citra. Contoh: jalanan akan lebih gelap dari tanah lapang.</li>
<li style="text-align: justify;"><strong>Ukuran</strong>: Besar atau kecilnya objek relatif terhadap lingkungan sekitarnya. Contoh: stadium olahraga memiliki ukuran yang jauh lebih besar dibandingkan pemukiman di sekitarnya.</li>
</ol>
<p> </p>
<p style="text-align: justify;"><span style="font-weight: 400;">Untuk memudahkan kamu menghafal unsur-unsur interpretasi citra di atas, kamu bisa menggunakan jembatan keledai atau rumus cepat hafalan sebagai berikut:</span></p>
<p><img decoding="async" style="width: 600px; display: block; margin: 0px auto;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/10GEO_-_Jenis_Citra_Penginderaan_Jauh_dan_Interpretasi_Citra-05.png" alt="penginderaan jauh dan interpretasi citra" width="600" /></p>
<p style="text-align: justify;"><strong>Baca Juga: <a href="https://www.ruangguru.com/blog/cara-mengetahui-kondisi-sumber-daya-manusia" target="_blank" rel="noopener">Cara Mengetahui Kondisi Sumber Daya Manusia</a></strong></p>
<p> </p>
<h2 style="text-align: justify;"><span style="font-size: 18pt;">Contoh Interpretasi Citra</span></h2>
<p style="text-align: justify;"><span style="font-weight: 400;">Contoh interpretasi citra dalam kehidupan nyata adalah:</span></p>
<ul style="text-align: justify;">
<li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">Menggunakan citra satelit untuk mengidentifikasi kawasan hutan yang mengalami deforestasi.</span></li>
<li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">Mengamati perubahan garis pantai akibat abrasi atau reklamasi.</span></li>
<li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">Mendeteksi genangan air akibat banjir menggunakan citra radar.</span></li>
<li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">Menganalisis pertumbuhan kota dan urbanisasi dengan membandingkan citra dari tahun ke tahun.</span></li>
</ul>
<p> </p>
<p style="text-align: center;">—</p>
<p style="text-align: justify;"><span style="font-weight: 400;">Penginderaan jauh dan interpretasi citra adalah metode efektif untuk memperoleh informasi mengenai permukaan bumi, serta mengidentifikasi objek atau fenomena di permukaan bumi. Dengan komponen-komponennya yang lengkap, teknologi ini memberikan manfaat besar di berbagai bidang, termasuk pertanian, kehutanan, hidrologi, kebencanaan, hingga meteorologi.</span></p>
<p style="text-align: justify;"><span style="font-weight: 400;">Bagi kamu yang tertarik dengan segala hal berbau geografi dan fisika, seperti halnya penginderaan jauh dan interpretasi citra, kamu bisa lho belajar lebih jauh melalui <strong><a href="https://app.ruangguru.com/" target="_blank" rel="noopener">aplikasi Ruangguru</a></strong>! Yuk, tonton video belajarnya sekarang!</span></p>
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<p><strong><em>Artikel ini pertama kali ditulis oleh <a href="https://www.ruangguru.com/blog/author/seno-aji" target="_blank" rel="noopener">Seno Aji</a> pada 26 Juni 2018, kemudian diperbarui oleh Kenya Swawikanti.</em></strong></p>
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<li><a href="https://www.ruangpeduli.org/" target="_blank">Ruangpeduli</a></li>
</ul>
</nav>
</div>
<div class="col-6 col-md-3">
<nav class="footer-menu">
<p class="title">Bantuan & Panduan</p>
<ul type="none">
<li><a href="https://www.ruangguru.com/company-credentials">Company Credentials</a></li>
<li><a href="https://www.ruangguru.com/beasiswa">Beasiswa Ruangguru</a></li>
<li><a href="https://www.ruangguru.com/cicilan">Cicilan Ruangguru</a></li>
<li><a href="https://www.ruangguru.com/promo">Promo Ruangguru</a></li>
<li><a href="https://ticketing.ruangguru.com/help?request_type_id=459" target="_blank">Vulnerability Report</a></li>
<li><a href="https://www.ruangguru.com/bantuan#layanan">Layanan Pengaduan</a></li>
<li><a href="https://www.ruangguru.com/terms-conditions">Syarat & Ketentuan</a></li>
<li><a href="https://www.ruangguru.com/privacy-policy">Kebijakan Privasi</a></li>
<li><a href="https://www.ruangguru.com/about-us">Tentang Kami</a></li>
<li><a href="https://www.ruangguru.com/contact-us">Kontak Kami</a></li>
<li><a href="https://www.ruangguru.com/press">Press Kit</a></li>
<li><a href="https://www.ruangguru.com/bantuan">Bantuan</a></li>
<li><a href="https://career.ruangguru.com/">Karier</a></li>
</ul>
</nav>
</div>
<div class="col-6 col-md-3">
<nav class="footer-menu">
<p class="title">Produk Lainnya</p>
<ul type="none">
<li><a href="https://www.brainacademy.id/" target="_blank">Brain Academy</a></li>
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<li><a href="https://skillacademy.com/" target="_blank">Skill Academy</a></li>
<li><a href="https://www.ruangkerja.id/" target="_blank">Ruangkerja</a></li>
<li><a href="https://www.schoters.com/id/" target="_blank">Schoters</a></li>
<li><a href="https://www.kalananti.id/" target="_blank">Kalananti</a></li>
</ul>
</nav>
</div>
<div class="col-6 col-md-3">
<nav class="footer-menu">
<p class="title"> Coba GRATIS Aplikasi Ruangguru</p>
<div class="download-list">
<ul>
<li>
<a target="_blank" rel="nofollow" href="https://apps.apple.com/id/app/ruangguru-solusi-belajar/id1099742206?l=id">
<img src="https://cdn-web-2.ruangguru.com/static/appstore.png" loading="lazy" alt="Button App Store Footer " />
</a>
</li>
<li>
<a target="_blank" rel="nofollow" href="https://play.google.com/store/apps/details?id=com.ruangguru.livestudents&hl=in">
<img src="https://cdn-web-2.ruangguru.com/static/googleplay.png" loading="lazy" alt="Button Google Play Footer " />
</a>
</li>
<li>
<a target="_blank" rel="nofollow" href="https://appgallery.huawei.com/#/app/C102352375">
<img src="https://cdn-web-2.ruangguru.com/static/huawei.png" loading="lazy" alt="Button AppGallery Footer " />
</a>
</li>
</ul>
</div>
</nav>
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</div>
</div>
<div class="d-lg-none text-center">
<nav class="footer-menu social">
<p class="title">Ikuti Kami</p>
<a target="_blank" href="https://www.instagram.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/instagram.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/instagram.png" loading="lazy" alt="Logo Instagram Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.facebook.com/ruanggurucom/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/facebook.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/facebook.png" loading="lazy" alt="Logo Facebook Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://twitter.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/twitter.png?height=60&convert=webp" type="image/webp">
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</picture>
</a>
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</a>
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</picture>
</a>
</nav>
</div>
<p class="footer-copyright">
© 2026 All Rights Reserved PT. Ruang Raya Indonesia
</p>
</div>
<style>
.bantuan-container {
position: relative;
}
.bantuan-element {
position: fixed;
z-index: 999;
display: flex;
align-items: flex-end;
justify-content: flex-end;
cursor: pointer;
transition: all 0.6s ease;
}
.bantuan-top {
bottom: 11rem;
right: 2rem;
}
.bantuan-bottom {
bottom: 2rem;
right: 2rem;
}
.bantuan-top-2 {
bottom: 15rem;
right: 2rem;
}
.bantuan-top-3 {
bottom: 19rem;
right: 2rem;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 2rem;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 2rem;
}
@media (min-width: 768px) {
.bantuan-element img {
width: auto;
transition: all 0.4s ease;
}
.bantuan-top img {
width: 140px;
}
.bantuan-bottom img {
width: 140px;
}
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 140px;
}
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 140px;
}
.bantuan-element.clicked {
bottom: 9rem;
right: 2.5rem;
}
.bantuan-element.clicked img {
width: auto;
height: 64px;
}
}
@media (max-width: 767px) {
.bantuan-top {
bottom: 8rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom {
bottom: 2rem;
right: 1.25rem;
align-items: center;
}
.bantuan-top-2 {
bottom: 12rem;
right: 1rem;
align-items: center;
}
.bantuan-top-3 {
bottom: 16rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 1.25rem;
align-items: center;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 1.25rem;
align-items: center;
}
.bantuan-element img {
width: auto;
}
.bantuan-top img,
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 96px;
}
.bantuan-bottom img,
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 96px;
}
}
.bantuan-element:hover {
transform: scale(1.05);
}
.bantuan-element img {
max-width: 100%;
height: auto;
}
</style>
<div id="bantuan-divs-container" style="position: relative" data-product="ruangguru" data-table="rg_floating_icon"></div>
<script>
class FloatingDivsComponent {
constructor(product = 'ruangguru', table = 'rg_floating_icon') {
this.container = document.getElementById('bantuan-divs-container');
this.floatingElements = [];
this.product = product;
this.table = table;
// Configuration
this.config = {
baseApiUrl: 'https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/rg_banner/views/',
apiKey: 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
maxElements: 2,
zIndexBase: 100,
};
// Build dynamic API URL based on table parameter
this.config.apiUrl = this.buildApiUrl();
this.init();
}
buildApiUrl() {
const baseUrl = this.config.baseApiUrl;
const tableName = this.table || 'rg_floating_icon';
const queryParams =
'offset=0&limit=99999&sort=rankPosition&where=(type,eq,floating)~and(showIn,anyof,blog)~and(hide,is,false)~and(product,eq,' +
this.product +
')&nested%5Bcta%5D%5Bfields%5D=Id,name,ctaId,imageUrl,ctaLink,targetUrl';
return `${baseUrl}${tableName}?${queryParams}`;
}
async init() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to initialize floating divs component:', error);
}
}
async fetchFloatingElements() {
try {
const options = {
method: 'GET',
headers: {
'xc-token': this.config.apiKey || 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
},
};
const urlNoco = this.config.apiUrl;
const response = await fetch(urlNoco, options);
if (!response.ok) {
throw new Error(`HTTP error! status: ${response.status}`);
}
const data = await response.json();
this.floatingElements = this.processApiResponse(data);
} catch (error) {
console.error('Error fetching floating elements:', error);
throw error;
}
}
processApiResponse(data) {
if (!data || !data.list || !Array.isArray(data.list)) {
return [];
}
console.log(data.list);
// Ensure we only get maximum 2 elements
const limitedElements = data.list.slice(0, this.config.maxElements);
return limitedElements;
}
renderFloatingElements() {
if (!this.container || this.floatingElements.length === 0) {
return;
}
// Additional safeguard: ensure we never render more than maxElements
const elementsToRender = this.floatingElements.slice(0, this.config.maxElements);
// Clean up existing elements and their event listeners
this.cleanupExistingElements();
// Clear existing content
this.container.innerHTML = '';
elementsToRender.forEach((element, index) => {
const floatingDiv = this.createFloatingDiv(element, index);
this.container.appendChild(floatingDiv);
});
}
cleanupExistingElements() {
// Clear existing elements (no need for event listener cleanup with CSS approach)
const existingElements = this.container.querySelectorAll('[data-floating-element]');
existingElements.forEach(element => {
element.remove();
});
}
createFloatingDiv(element, index) {
const div = document.createElement('div');
const cta = element.cta[0]; // Use the first CTA
// Add data attribute for cleanup tracking
div.setAttribute('data-floating-element', 'true');
// Apply CSS classes based on rankPosition
const positionClass = this.getPositionClass(element.rankPosition, index);
div.className = `bantuan-element ${positionClass}`;
div.style.zIndex = this.config.zIndexBase + index;
// Create the link and image
const link = document.createElement('a');
link.href = 'https://cta.ruangguru.com/' + cta.ctaId || '#';
link.target = '_blank';
// Add tracking attributes
link.setAttribute('data-tracking-event-type', 'landing_page__core__item_click');
link.setAttribute(
'data-tracking-context',
JSON.stringify({
product_name: this.product,
cta_action: 'redirection',
cta_action_detail: link.href,
item_type: 'floating',
item_name: element.name || 'Floating element',
item_category: 'payment',
item_position: index,
item_serial: null,
section_type: 'floating_item',
section_position: 'body',
section_name: 'floating_item',
})
);
const img = document.createElement('img');
img.src = element.imageUrl + '?h=200&convert=webp';
img.alt = element.name || 'Floating element';
img.loading = 'lazy';
// Add click tracking
link.addEventListener('click', () => {
this.trackClick(element, cta);
});
link.appendChild(img);
div.appendChild(link);
return div;
}
getPositionClass(rankPosition, index) {
// Define positioning classes based on rankPosition
if (rankPosition === 1) {
return 'bantuan-top'; // Top position
} else if (rankPosition === 2) {
return 'bantuan-bottom'; // Bottom position
} else {
// For additional elements, distribute them evenly
return `bantuan-${index % 2 === 0 ? 'top' : 'bottom'}-${Math.floor(index / 2) + 1}`;
}
}
trackClick(element, cta) {
// Implement click tracking logic here
console.log('Floating element clicked:', {
elementId: element.Id,
elementName: cta.name,
ctaId: cta.ctaId,
targetUrl: cta.targetUrl,
});
}
// Public method to manually refresh
async refresh() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to refresh floating elements:', error);
throw error;
}
}
// Public method to get current floating elements
getFloatingElements() {
return [...this.floatingElements];
}
}
// Initialize the component when DOM is ready
document.addEventListener('DOMContentLoaded', () => {
// Get product and table parameters from data attributes
const container = document.getElementById('bantuan-divs-container');
const product = container.getAttribute('data-product') || 'ruangguru';
const table = container.getAttribute('data-table') || 'rg_floating_icon';
new FloatingDivsComponent(product, table);
});
// Export for use in other modules if needed
if (typeof module !== 'undefined' && module.exports) {
module.exports = FloatingDivsComponent;
}
</script> <div id="wp-install-nudge" style="
position: fixed;
bottom: 0rem;
right: 0;
z-index: 999;
cursor: pointer;
"></div>
<script>
(function (w, d, s, o, f, js, fjs) {
w['Sales-Nudge-Widget'] = o; w[o] = w[o] || function () { (w[o].q = w[o].q || []).push(arguments) };
js = d.createElement(s), fjs = d.getElementsByTagName(s)[0];
js.id = o; js.src = f; js.async = 1; fjs.parentNode.insertBefore(js, fjs);
}(window, document, 'script', 'wpInstallNudge', 'https://cdn-web-2.ruangguru.com/sales-nudge/6198a95130/dist/widget.js'));
wpInstallNudge('init', { targetElementId: 'wp-install-nudge', clientTarget: 'ruangguru_blog' });
</script>
<script>
// note: disabled due to auto reload page
// var lastScrollTop = 0;
// $(window).scroll(function(event){
// var st = $(this).scrollTop();
// if (st > lastScrollTop){
// $('#wp-install-nudge').slideDown( "slow", function() {});
// } else {
// $('#wp-install-nudge').slideUp( "slow", function() {});
// }
// lastScrollTop = st;
// });
// $(document).ready(function () {
// $("#wp-install-nudge").hide();
// });
$('#wp-install-nudge').click(function(){
Analytics.track("promotion__install_nudge__click",
{
user_email: "ruangguru@blog.com",
cta_link: widgetData.dataConfig.target_link
}).catch((err) => {
console.log("tracker error", err);
});
});
</script>
</footer>
<div id="__next"></div>
<script type="speculationrules">
{"prefetch":[{"source":"document","where":{"and":[{"href_matches":"\/blog\/*"},{"not":{"href_matches":["\/blog\/wp-*.php","\/blog\/wp-admin\/*","\/blog\/wp-content\/uploads\/*","\/blog\/wp-content\/*","\/blog\/wp-content\/plugins\/*","\/blog\/wp-content\/themes\/ruangguru\/*","\/blog\/*\\?(.+)"]}},{"not":{"selector_matches":"a[rel~=\"nofollow\"]"}},{"not":{"selector_matches":".no-prefetch, .no-prefetch a"}}]},"eagerness":"conservative"}]}
</script>
<script>
async function getCtaDetails(ctaIds) {
const endpoint =
" https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/CTA/views/CTA?offset=0&limit=10&where=(ctaId,in," + ctaIds.toString() + ")";
try {
const response = await fetch(endpoint, {
headers: {
"xc-token": "-hG2nBDJzSj0agSgNtcJx97M4F02y54nUMoY6plJ",
},
});
const data = await response.json();
const ctaList = data?.list || [];
const ctaMap = new Map();
for (const ctaData of ctaList) {
ctaMap.set(ctaData.ctaId, ctaData);
}
return ctaMap;
} catch (error) {
console.error("Error fetching CTA details:", error);
return new Map();
}
}
async function replaceCTA() {
const regex = /{{cta\((‘(.*?)’|“(.*?)”)\)}}/g;
const bodyHTML = document.body.innerHTML;
const matches = Array.from(bodyHTML.matchAll(regex));
const ctaIds = matches.map((match) => {
let ctaId = match[2] ?? match[3];
return ctaId;
});
const ctaMap = await getCtaDetails(ctaIds);
const replacedHTML = bodyHTML.replace(regex, (match, _inner, ctaId1, ctaId2) => {
const ctaId = ctaId1 ?? ctaId2;
const ctaData = ctaMap.get(ctaId);
if (ctaData) {
return `<a href="https://cta.ruangguru.com/${ctaData.ctaId}" target="_${ctaData.targetType}" style="position:relative;display:inline-block;">
<img src="${ctaData.imageUrl}" loading="lazy" alt="${ctaData.altText}" />
</a>`;
} else {
return match;
}
});
document.body.innerHTML = replacedHTML;
}
</script>
<meta name="author" content="Ruangguru Tech Team">
<!-- Google Tag Manager (noscript) -->
<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-PVNLZFT" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
<!-- Tracker -->
<script type="text/javascript" src="https://cdn-web-2.ruangguru.com/landing-page-web/public/staticpages/global-assets/js/cta.js"></script>
<script src="https://unpkg.com/@dotlottie/player-component@latest/dist/dotlottie-player.mjs" type="module"></script>
</body>
</html>