Method and system for detecting compression degree of noise
A detection system and detection method technology, applied in the field of video processing, can solve problems such as difficulty in distinguishing compressed noise original video completely and correctly
Inactive Publication Date: 2010-03-03
SUNPLUS TECH CO LTD
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, when the compression rate is increased and the video quality is degraded, the ringing phenomenon (ringing) usually occurs at the edge of the higher spatial frequency of the video, and the block phenomenon occurs when there is a large range of motion.
Usually, it is difficult to completely and accurately distinguish between compressed noise and original video through video content analysis alone without using compressed data. If you want to generate a more reliable estimation index, you can refer to the consistency of the compression degree of the same signal source, use Measurements generated over a period of time
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0032] figure 1 is a block diagram of the detection system for the degree of compression noise of the present invention, which is used to generate an index of video compression. The video F[N] is composed of a two-dimensional array of pixels, where pixel (i, j) is the video F[N] The pixel (pixel) of column I (row) row j (column). The detection system includes a line buffer (line buffer) 110, an edge filter (edge filter) 120, a line filter (line filter) 130, a first judging device 140, a first buffer 150, a second buffer 160, a Two judging means 170 , a first counter 180 , a second counter 185 and a divider 190 .
[0033] The line buffer 110 is used to temporarily store the pixel (i, j) and adjacent pixels. figure 2 is a schematic diagram of the line buffer 110 temporarily storing the pixel (i, j) and adjacent pixels. The adjacent pixels temporarily stored in the line buffer 110 are pixel (i-1, j), pixel (i+1, j), pixel (i, j-1), pixel (i-1, j-1), pixel (i+1, j-1), pixel...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a system for testing noise compression degree and a method thereof, which are used for generating the compression index of a video. The system comprises a line buffer used fortemporarily storing a pixel (i, j) and neighboring pixels, an edge filter used for calculating the edge index of the pixel (i, j), a line filter used for calculating the line index of the pixel (i, j), a first judging device used for generating an edge signal according to the edge index and the line index so as to indicate that whether the pixel (i, j) is positioned at an edge, a first buffer used for temporarily storing the edge signals of the pixel (i, j) and the neighboring pixels thereof, a second buffer used for temporarily storing the line indexes of the pixel (i, j) and the neighboringpixels thereof, a second judging device used for generating a circumfluence signal of the pixel (i, j) according to the edge signals of the pixel (i, j) and the neighboring pixels thereof in the first buffer and the line index of the pixel (i, j) in the second buffer.
Description
technical field [0001] The invention relates to the technical field of video processing, in particular to a detection system and method for compression noise level. Background technique [0002] Due to the advancement of digital compression technology, more and more TV videos are stored or transmitted after being digitally compressed, and then played after being decompressed. This way can increase the amount of transmitted information and reduce analog noise. The general digital compression adopts the MPEG compression method, but for the video restored after being compressed by the MPEG distortion compression method, when the compression rate is high, some digital defects will become obvious. Due to the difference in the degree of quantization during compression, some special noise will be generated. For example, when the degree of quantization of the block is severe, there will be discontinuity at the border of the block, resulting in a region on the displayed video. bloc...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/26H04N7/30
Inventor 彭源智
Owner SUNPLUS TECH CO LTD