Scalable Coding Of Motion And Depth Fields With Shared Breakpoints

A new breakpoint adaptive DWT, referred to as tri-break, is currently being considered by standardization efforts in relation to JPEG 2000 Part 17 extensions. We first provide a summary of the tri-break transform and then explore its performance for coding motion fields. Experimental results show th...

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Vydáno v:Proceedings - International Conference on Image Processing s. 2139 - 2143
Hlavní autoři: Mathew, R., Li, Y., Taubman, D.
Médium: Konferenční příspěvek
Jazyk:angličtina
Vydáno: IEEE 19.09.2021
Témata:
Computer architecture
Conferences
DWT
Graphics processing units
Image coding
Image Compression
Mesh models
Standardization
Transform coding
Transforms
ISSN:2381-8549
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Shrnutí:A new breakpoint adaptive DWT, referred to as tri-break, is currently being considered by standardization efforts in relation to JPEG 2000 Part 17 extensions. We first provide a summary of the tri-break transform and then explore its performance for coding motion fields. Experimental results show that significant gains can be achieved for coding piecewise smooth motion flows by employing the tri-break transform. We demonstrate the feasibility of utilising a common set of breakpoints for compressing depth maps and motion fields anchored at the same frame. We also extend prior work to decode motion vector fields directly onto a triangular mesh, enabling operations such as view warping to be defined on triangular cells which can be efficiently processed by GPU based architectures.
ISSN:2381-8549
DOI:10.1109/ICIP42928.2021.9506365