A method for real-time motion-aware image enhancement
An image enhancement and motion perception technology, applied in the field of video coding, can solve the problems of affecting the quality of the coded image, poor search and matching effect, and a large amount of calculation, so as to improve the quality of the coded image, improve the accuracy, and reduce the amount of calculation.
Active Publication Date: 2017-06-27
厦门亿联通讯技术有限公司
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[0002] In the field of video coding, for static images, the coding efficiency is high and the coded image quality is good, but for dynamic images or dynamic content, under the same bandwidth conditions, the coding effect has a certain gap compared with static images, and the lower the bandwidth, the more obvious the difference
The current video coding system basically adopts the strategy of the original encoder. There is no prior knowledge for a new frame of image to be encoded. Generally, the image macroblock (usually a 16*16 pixel block) is used as a unit, and the motion search (MotionEstimation) is used. To determine whether the macroblock is in motion, the amount of calculation is large, and it is too limited to local information. In some cases, the search and matching effect is poor, which affects the quality of the encoded image.
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[0023] see figure 1 , a method for real-time motion perception image enhancement of the present invention, this method is applicable to video conferencing systems, comprising the following steps:
[0024] Step 10, dynamically adjust the frame rate of the image according to the actual scene and demand, and perform a zoom-in operation on the image with higher resolution among them to reduce the resolution of the image, which can reduce the consumption of system performance;
[0025] Step 11, establishing a mixed Gaussian model for the image processed in step 10, and distinguishing background points and foreground points of the image as output background information and foreground information;
[0026] Step 12, extracting the foreground information output in step 11, performing a clustering operation on the foreground information, thereby obtaining the coverage of the foreground area and removing the foreground area with too small coverage;
[0027] Step 13, using the Kalman fil...
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The invention provides a method for real-time motion perception image enhancement, which is suitable for video conferencing systems, combines the foreground and background separation algorithm with an image encoder, and obtains the foreground area, background area and foreground area motion of the image through the foreground and background separation algorithm The vector is transmitted to the image encoder, which increases the prior knowledge of the image encoder, and the image encoder uses different strategies for encoding according to the different regions where the currently encoded macroblock is located. The invention has the advantages that: by reducing the calculation amount of the image encoder, the performance consumption of the image encoder is reduced, and the motion search accuracy of the image encoder is improved, thereby effectively improving the quality of encoded images.
Description
technical field [0001] The present invention relates to the field of video coding, and more specifically, relates to a method for real-time motion perception image enhancement and improving the quality of moving image coding. Background technique [0002] In the field of video coding, the coding efficiency is high for static images and the coded image quality is good, but for dynamic images or dynamic content, under the same bandwidth conditions, the coding effect is somewhat different from that of static images, and the lower the bandwidth, the more obvious the difference. The current video coding system basically adopts the strategy of the original encoder. There is no prior knowledge for a new frame of image to be encoded. Generally, the image macroblock (usually a 16*16 pixel block) is used as the unit, and the motion search (MotionEstimation) is used. To determine whether the macroblock is in motion, the computational complexity is large, and it is too limited to local ...
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IPC IPC(8): H04N19/20H04N19/124H04N19/56H04N19/17
Inventor 孔令波
Owner 厦门亿联通讯技术有限公司