A JPEG-Like Algorithm for Compression of Single-Sensor Camera Image

Omar Benahmed Daho (1) , Mohamed-Chaker Larabi (2) , Jayanta Mukhopadhyay (3)

1 XLIM - XLIM
2 SIC
3 CSE - Department of Computer Science and Engineering [Kharagpur]

This paper presents a JPEG-like coder for image compression of single-sensor camera images using a Bayer Color Filter Array (CFA). The originality of the method is a joint scheme of compression.demosaicking in the DCT domain. In this method, the captured CFA raw data is first separated in four distinct components and then converted to YCbCr. A JPEG compression scheme is then applied. At the decoding level, the bitstream is decompressed until reaching the DCT coefficients. These latter are used for the interpolation stage. The obtained results are better than those obtained by the conventional JPEG in terms of CPSNR, DeltaE2000 and SSIM. The obtained JPEG-like scheme is also less complex.

Domaines: Traitement des images [eess.IV]; Traitement du signal et de l'image [eess.SP]; Traitement du signal et de l'image [eess.SP]

Omar Benahmed Daho, Mohamed-Chaker Larabi, Jayanta Mukhopadhyay. A JPEG-Like Algorithm for Compression of Single-Sensor Camera Image. IS&T/SPIE Electronic Imaging: Digital Photography VII, 2011, San Francisco, United States. pp.1-12. ⟨hal-00628586⟩