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Comparison of compression performance of 10-bit vs. 8-bit depth, under H.264 Hi422 profile
H.264 is one of the first video coding standard incorporating coding formats with a bit-depth of above 8 bits. This paper presents the results of compression comparison tests for the H.264 "High 422" profile, between 10-bit and 8-bit sample depths. The simulations were run on five 720p and...
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creator | Ruiz, Damian Sladojevic, Srdjan Culibrk, Dubravko Fernandez-Escribano, Gerardo |
description | H.264 is one of the first video coding standard incorporating coding formats with a bit-depth of above 8 bits. This paper presents the results of compression comparison tests for the H.264 "High 422" profile, between 10-bit and 8-bit sample depths. The simulations were run on five 720p and 1080i high definition sequences. PSNR and SSIM metrics were used to evaluate the objective quality performance of both bit-depths, and with the aim of enabling a fair comparison, both metrics were computed with 10-bit precision, up-scaling the 8-bit decoded sequences to 10-bits. Some works have been published in this field based on the evaluation of commercial 10-bit H.264 implementations. In this work, we carry out a neutral evaluation of H.264 standard performance using the official H.264 Reference Software. Unlike the expected 10-bit coding gains, the results show unnoticeable differences between both sample depths in terms of objective quality, lower 0.1dB for PSNR and 0.002 for SSIM, with a 5% bit rate saving that can be achieved for the luminance component, especially for the 720p format, and negligible quality improvement for U and V chroma components. |
doi_str_mv | 10.1109/TELSKS.2013.6704904 |
format | conference_proceeding |
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This paper presents the results of compression comparison tests for the H.264 "High 422" profile, between 10-bit and 8-bit sample depths. The simulations were run on five 720p and 1080i high definition sequences. PSNR and SSIM metrics were used to evaluate the objective quality performance of both bit-depths, and with the aim of enabling a fair comparison, both metrics were computed with 10-bit precision, up-scaling the 8-bit decoded sequences to 10-bits. Some works have been published in this field based on the evaluation of commercial 10-bit H.264 implementations. In this work, we carry out a neutral evaluation of H.264 standard performance using the official H.264 Reference Software. Unlike the expected 10-bit coding gains, the results show unnoticeable differences between both sample depths in terms of objective quality, lower 0.1dB for PSNR and 0.002 for SSIM, with a 5% bit rate saving that can be achieved for the luminance component, especially for the 720p format, and negligible quality improvement for U and V chroma components.</abstract><pub>IEEE</pub><doi>10.1109/TELSKS.2013.6704904</doi><tpages>4</tpages></addata></record> |
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identifier | ISBN: 9781479908998 |
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source | IEEE Electronic Library (IEL) Conference Proceedings |
subjects | banding artifacts Bit rate bit-depth contouring Encoding Fidelity Range Extensions H.264 High 422 Profile Internal Bit Depth Increase PSNR Transform coding Video coding |
title | Comparison of compression performance of 10-bit vs. 8-bit depth, under H.264 Hi422 profile |
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