Abstract
This paper deals with the influence of bit depth on the subjective video quality assessment. To achieve this goal, eight video sequences, each representing a different content prototype, were analysed. Subjective evaluation was performed using the ACR method. The analysed video sequences were encoded to 8 and 10-bit bit depth. Two most used compression standards H.264 and H.265 were evaluated with 1, 3, 5, 10 and 15 Mbps bitrate in Full HD and UHD resolution. Finally, the perceived quality of both compression standards using the subjective tests with emphasis on bit-depth was compared. From the results we can state, that the practical application of 10-bit bit depth is not appropriate for Full HD resolution in the range of bitrate from 1 to 15 Mbps, for Ultra HD resolution, it is appropriate only for videos encoded by H.265/HEVC compression standard.
Highlights
IntroductionThe level of video multimedia services has increased rapidly
In recent years, the level of video multimedia services has increased rapidly
The coding efficiency of H.265/HEVC standard is more visible in ultra HD (UHD) resolution
Summary
The level of video multimedia services has increased rapidly. This evolution was allowed by increase of bandwidth of communication networks. Despite the fact that the capacity of certain network access technologies is up to hundreds or thousands of megabits per second (depending on the type of technology), the video compression is still hot and a current topic. The rest of the paper is divided as follows. The short characteristic of H.264 and H.265 compression standards is written. The second part describes briefly objective metrics used in our experiments. The measurements and experimental results are described
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