Method for real-time motion sensing of 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 encoded images, poor search and matching effects, and large amount of calculations, so as to improve the quality of encoded images, improve accuracy, and reduce the amount of calculations.
Active Publication Date: 2014-12-24
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 encoding system basically adopts the strategy of the original encoder, without any prior knowledge for a new frame of image to be encoded, and generally takes the image macroblock (usually a 16*16 pixel block) as the unit, through motion search (Motion Estimation ) means to judge whether the macroblock is moving, the 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 sensing of image enhancement. The method is applicable to a video conference system. The method includes steps of combining a foreground and background separation algorithm with an image encoder, acquiring a foreground area and a background area of images and motion vectors of the foreground area and transmitting to the image encoder, adding priori knowledge of the image encoder and encoding with different strategies by the image encoder according to different areas where current encoding macroblocks are located. The method for real-time motion sensing of image enhancement has the advantages that performance consumption of the image encoder is reduced by reducing calculation amount, accuracy of motion estimation of the image encoder is improved, and quality of encoded images is effectively improved.
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 encoding system basically adopts the strategy of the original encoder, without any prior knowledge for a new frame of image to be encoded, and generally takes the image macroblock (usually a 16*16 pixel block) as the unit, through motion search (Motion Estimation ) means to judge whether the macroblock is moving or not, the amount of calculation is large, and it is too limited to local i...
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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