Abstract
This paper presents a novel video encoding method for cooperative educational dissemination systems. Taking into consideration the inherent characteristics of stereo cameras framework in our educational videos and the ability of determining objects in different depths in a scene, we have proposed a novel object-based video encoding based on “sprite coding” that supports the MPEG-4 Version 1 Main profile in order to transfer distance learning videos across narrow-band transmission links such as the Internet. This paper proposes a multi-layer video object layer generation scheme with foreground moving object extraction and background sprite generation using stereo camera property. The foreground object is coded as a video object plane of its related layer, while the background sprite is coded using sprite coding in MPEG-4. We call this coding scheme “sprite mode”. Experiments are conducted on video object plane generation and video coding using MPEG-4. We have compared the performance of our sprite mode with MPEG-4 normal mode and have shown that the coding efficiency of the sprite mode is higher than that of the normal mode at the same objective image quality when the foreground ratio is around 30%.
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Khalili, A.H., Bagheri, M., Kasaei, S. (2008). Object-Based Video Coding for Distance Learning Using Stereo Cameras. In: Sarbazi-Azad, H., Parhami, B., Miremadi, SG., Hessabi, S. (eds) Advances in Computer Science and Engineering. CSICC 2008. Communications in Computer and Information Science, vol 6. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-89985-3_22
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DOI: https://doi.org/10.1007/978-3-540-89985-3_22
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