18151266. VIDEO DECODING METHOD AND APPARATUS AND VIDEO ENCODING METHOD AND APPARATUS simplified abstract (SAMSUNG ELECTRONICS CO., LTD.)
VIDEO DECODING METHOD AND APPARATUS AND VIDEO ENCODING METHOD AND APPARATUS
Organization Name
Inventor(s)
Alexander Alshin of Seoul (KR)
VIDEO DECODING METHOD AND APPARATUS AND VIDEO ENCODING METHOD AND APPARATUS - A simplified explanation of the abstract
This abstract first appeared for US patent application 18151266 titled 'VIDEO DECODING METHOD AND APPARATUS AND VIDEO ENCODING METHOD AND APPARATUS
Simplified Explanation
The video decoding method described in the patent application involves determining the displacement vector of pixels in a current block without using stored values about pixels outside the reference blocks. It also involves obtaining a prediction block for the current block using motion compensation techniques and gradient values of corresponding reference pixels.
- The method determines the displacement vector of pixels in a current block by using values from reference pixels in two reference blocks.
- The displacement vector is determined per unit time and in either the horizontal or vertical direction.
- The method does not rely on stored values about pixels located outside the boundaries of the reference blocks.
- The prediction block for the current block is obtained using block-unit motion compensation and pixel group unit motion compensation techniques.
- The gradient values of corresponding reference pixels in the reference blocks are used, along with the pixel values and displacement vector, to perform the motion compensation.
- The current pixel group, which is part of the current block, may contain at least one pixel.
Potential Applications
- Video compression and encoding technologies
- Video streaming services
- Video playback and decoding software
- Video surveillance systems
Problems Solved
- Efficient and accurate video decoding
- Reduction of storage requirements for reference pixel values
- Improved motion compensation techniques
- Enhanced video quality and playback performance
Benefits
- Higher compression ratios for video files
- Reduced bandwidth requirements for video streaming
- Improved video playback quality and smoothness
- More efficient video surveillance systems with better motion tracking capabilities
Original Abstract Submitted
Provided is a video decoding method including determining a displacement vector per unit time of pixels of a current block in a horizontal direction or a vertical direction, the pixels including a pixel adjacent to an inside of a boundary of the current block, by using values about reference pixels included in a first reference block and a second reference block, without using a stored value about a pixel located outside boundaries of the first reference block and the second reference block; and obtaining a prediction block of the current block by performing block-unit motion compensation and pixel group unit motion compensation on the current block by using a gradient value in the horizontal direction or the vertical direction of a first corresponding reference pixel in the first reference block which corresponds to a current pixel included in a current pixel group in the current block, a gradient value in the horizontal direction or the vertical direction of a second corresponding reference pixel in the second reference block which corresponds to the current pixel, a pixel value of the first corresponding reference pixel, a pixel value of the second corresponding reference pixel, and a displacement vector per unit time of the current pixel in the horizontal direction or the vertical direction. In this regard, the current pixel group may include at least one pixel.
