A video image frame field detection method, storage medium and computer
A technology of video image and detection method, applied in the field of image processing, can solve the problems of real-time impact, simple detection algorithm, multiple computing resources, etc., to achieve the effect of image optimization, reduction of jaggies and horizontal stripes
Active Publication Date: 2020-11-06
FUZHOU ROCKCHIP SEMICON
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At present, there are many algorithms for frame field detection, but the calculation complexity is high, which will consume more computing resources and the real-time performance will be affected to varying degrees; or the detection algorithm is simple, resulting in inaccurate detection
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[0018] In order to explain in detail the technical content, structural features, achieved goals and effects of the technical solution, the following will be described in detail in conjunction with specific embodiments and accompanying drawings.
[0019] see figure 1 , is a frame field detection method of a global video image of the present invention, comprising the following steps, S100 counting the number of macroblocks occupied by the edge of the moving object in the current image, and whether the ratio of the number of all macroblocks in the current image is greater than the first preset value, if no, then judge that the current image is a frame characteristic, and then proceed to step S102 to continue judging that in the macroblock occupied by the edge of the moving object, if the macroblock greater than the second preset value has a field characteristic, then judge that the current image is a field Characteristics; specifically, count the number M of macroblocks occupied ...
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The invention discloses an image frame field detection method, a storage medium and a computer. The method comprises the following steps of counting whether a ratio of the number of the macro blocks occupied by the edge of a moving object of a current image to the number of all macro blocks of the current image is larger than a first preset value or not, if not, judging the current image as a frame characteristic, if yes, continuing to judge the macro blocks occupied by the edge of the moving object, if the macro blocks larger than a second preset value have a field characteristic, judging thecurrent image as the field characteristic, and otherwise judging the current image as the frame characteristic; and carrying out de-interleaving on the current image which is judged as the field characteristic. According to the image frame field detection method, the storage medium and the computer, a problem that the image is de-interleaved by screening the frame characteristic and the field characteristic through an algorithm with moderate complexity is solved.
Description
technical field [0001] The invention relates to the field of image processing, in particular to a detection method, a storage medium and a computer for each image frame field of a global video. Background technique [0002] Due to the limitations of processing speed and bandwidth, early devices used interlaced (interlace) signals instead of progressive (progressive) signals. Modern new display devices such as liquid crystal displays, plasma displays, digital projectors, etc., only support progressive scan signals. When combining the upper and lower fields into one frame, because there is a time difference between the two fields, if the objects in the two fields move, the combined image may produce a phenomenon of "sawtooth" and "horizontal stripes". . Therefore, it is necessary to detect this phenomenon and calibrate it, and then process to remove this phenomenon. [0003] Deinterleaving first needs to detect whether the current frame is a frame obtained by merging two fi...
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IPC IPC(8): H04N7/01H04N5/14
CPCH04N5/142H04N7/0115
Inventor 张善旭林金发何德龙
Owner FUZHOU ROCKCHIP SEMICON