18099131. VIDEO CODING METHOD ON BASIS OF SECONDARY TRANSFORM, AND DEVICE FOR SAME simplified abstract (LG Electronics Inc.)
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VIDEO CODING METHOD ON BASIS OF SECONDARY TRANSFORM, AND DEVICE FOR SAME
Organization Name
Inventor(s)
VIDEO CODING METHOD ON BASIS OF SECONDARY TRANSFORM, AND DEVICE FOR SAME - A simplified explanation of the abstract
This abstract first appeared for US patent application 18099131 titled 'VIDEO CODING METHOD ON BASIS OF SECONDARY TRANSFORM, AND DEVICE FOR SAME
Simplified Explanation
The video decoding method described in this patent application involves several steps to process and reconstruct video data. Here is a simplified explanation of the abstract:
- The method starts by performing inverse quantization on quantized transform coefficients for a specific block in the video.
- Next, an inverse reduced secondary transform (RST) is applied to the transform coefficients to derive modified transform coefficients.
- Finally, a reconstructed picture is generated using the modified transform coefficients and residual samples for the target block.
Potential applications of this technology:
- Video compression and decompression algorithms
- Video streaming services
- Video editing and post-production software
Problems solved by this technology:
- Efficient video decoding and reconstruction
- Reduction of video file sizes without significant loss in quality
- Improved video streaming performance and bandwidth utilization
Benefits of this technology:
- Higher video compression ratios, resulting in smaller file sizes
- Faster video decoding and playback
- Improved video quality and clarity
- Enhanced video streaming experience with reduced buffering and smoother playback.
Original Abstract Submitted
A video decoding method according to the present document is characterized by comprising: a step for deriving transform coefficients through inverse quantization on the basis of quantized transform coefficients for a target block; a step for deriving modified transform coefficients on the basis of an inverse reduced secondary transform (RST) of the transform coefficients; and a step for generating a reconstructed picture on the basis of residual samples for the target block on the basis of an inverse primary transform of the modified transform coefficients, wherein the inverse RST using a transform kernel matrix is performed on transform coefficients of the upper-left 4×4 region of an 8×8 region of the target block, and the modified transform coefficients of the upper-left 4×4 region, upper-right 4×4 region, and lower-left 4×4 region of the 8×8 region are derived through the inverse RST.
