Pemampatan Intraframe pada Citra Sekuensial Menggunakan Gelombang Singkat Biorthogonal
DOI:
https://doi.org/10.24002/jbi.v3i1.315Abstract
Abstract. In the sequential image compression process there are two compression processes known as intraframe and interframe compressions. This paper focuses on intraframe compression on an image sequence by using the 14 Biorthogonal wavelet. Intraframe compression utilizes spatial redundancy within a frame. This happens because there is a correlation between a pixel with its neighboring pixels. This research uses different changes between frames in sequential images by moving the camera, and shifting objects in the middle. Then each sequential image is tested by using the 14 Biorthogonal wavelet toward its PSNR and compression ratio (%). The results of  the research can be concluded that the Biorthogonal 2.4 has the highest PSNR. As for the compression ratio, they show that the Biorthogonal 3.1 produces the highest compression ratio (%).
Keywords: Sequential image, intraframe compression, compression ratio, PSNR, wavelet
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Abstrak. Pada citra sekuensial dikenal dua proses pemampatan yaitu pemampatan intraframe dan pemampatan interframe. Pada makalah ini lebih difokuskan pada pemampatan intraframe dari suatu citra sekuensial yang menggunakan 14 wavelet Biorthogonal. Pemampatan intraframe memanfaatkan redundansi spasial yang terdapat dalam suatu bingkai. Hal ini disebabkan karena adanya korelasi antara sebuah piksel dengan piksel di sekitarnya. Penelitian ini menggunakan perubahan antar bingkai pada citra sekuensial, yaitu kamera yang bergerak dan obyek di tengah bergerak. Kemudian setiap citra sekuensial diuji dengan 14 wavelet biorthogonal terhadap PSNR dan prosentase rasio kompresinya. Dari hasil penelitian dan pembahasan dapat ditarik beberapa kesimpulan, yaitu pada pemampatan intraframe wavelet Biorthogonal 2.4 menghasilkan PSNR tertinggi. Sedangkan untuk porsentase rasio kompresi terlihat bahwa Biorthogonal 3.1 menghasilkan rasio kompresi tertinggi.
Kata Kunci: citra sekuensial, pemampatan intraframe, prosentase rasio kompresi, PSNR, gelombang singkat
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