18680442. METHOD, APPARATUS AND SYSTEM FOR ENCODING AND DECODING A TREE OF BLOCKS OF VIDEO SAMPLES simplified abstract (CANON KABUSHIKI KAISHA)
Contents
METHOD, APPARATUS AND SYSTEM FOR ENCODING AND DECODING A TREE OF BLOCKS OF VIDEO SAMPLES
Organization Name
Inventor(s)
Christopher James Rosewarne of Concord West (AU)
METHOD, APPARATUS AND SYSTEM FOR ENCODING AND DECODING A TREE OF BLOCKS OF VIDEO SAMPLES - A simplified explanation of the abstract
This abstract first appeared for US patent application 18680442 titled 'METHOD, APPARATUS AND SYSTEM FOR ENCODING AND DECODING A TREE OF BLOCKS OF VIDEO SAMPLES
The patent application describes a system and method for decoding a transform block for a color channel of an image frame from a video bitstream.
- The method involves determining the chroma format of the image frame, which includes subsampled chroma channels relative to the luma channel.
- It also includes determining the coefficient group size of the transform block, up to 16 samples, based solely on the transform block size independent of color plane and chroma subsampling.
- The transform block is then decoded using coefficient groups of the determined size from the video bitstream.
Potential Applications:
- Video compression technology
- Image processing algorithms
- Multimedia applications
Problems Solved:
- Efficient decoding of color channels in video frames
- Optimized use of coefficient groups for transform block decoding
Benefits:
- Improved video quality
- Reduced bandwidth usage
- Enhanced multimedia performance
Commercial Applications:
- Video streaming services
- Video conferencing platforms
- Digital media production companies
Questions about the technology: 1. How does this method improve video compression efficiency? 2. What impact does the determination of coefficient group size have on video quality?
Original Abstract Submitted
A system and method of decoding a transform block for a colour channel of an image frame from a video bitstream. The method comprises determining a chroma format of the image frame, the chroma format having chroma channels of the image frame being subsampled relative to a luma channel of the image frame; determining a coefficient group size of the transform block, the coefficient group size being a largest area of the transform block of up to 16 samples, the coefficient group size being determined based only on the transform block size and independent of both (i) a colour plane of the transform block and (ii) colour plane subsampling due to the determined chroma format; and decoding the transform block using coefficient groups of the determined size from the video bitstream
