Year-end Sale % OFF 
Abstract
This paper deals with the influence of chroma subsampling on perceived video quality measured by subjective metrics. The evaluation was done for two most used video codecs H.264/AVC and H.265/HEVC. Eight types of video sequences with Full HD and Ultra HD resolutions depending on content were tested. The experimental results showed that observers did not see the difference between unsubsampled and subsampled sequences, so using subsampled videos is preferable even 50 % of the amount of data can be saved. Also, the minimum bitrates to achieve the good and fair quality by each codec and resolution were determined.
Highlights
Many research activities focus on objective and subjective video quality assessment, only a few of them analyze the quality affected by chroma subsampling
In the paper [1], the efficiency of the chroma subsampling for sequences with HDR content using only objective metrics is assessed
In the paper [3], the impact of the chroma subsampling for HDR video coding is subjectively evaluated
Summary
Many research activities focus on objective and subjective video quality assessment, only a few of them analyze the quality affected by chroma subsampling. The paper [4] presents the measurement of the influence of two different chroma subsampling formats (4:2:2 and 4:2:0) on image quality for only MPEG-2 compression. From this search follows that publication researching the impact of chroma subsampling on the video quality using subjective assessment is missing. Hand in hand with the development of high-speed networks, storage media with larger space, new digital cameras and ultrahigh definition video devices, the accessibility of these technologies has rapidly increased As a result, such devices are used by professional and by semi-professionals or video enthusiasts. 4K or 8K video recording and processing systems that support bit depth up to 16 bits and chroma subsampling up to 4:4:4 are already available
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
