Method and device for zooming video sequence resolution
A video sequence and resolution technology, which is applied in the field of zooming video sequence resolution and zooming video sequence resolution devices, can solve the problems of large amount of calculation for image zooming, increased system resource occupation, and reduced efficiency of video sequence resolution scaling, etc. , to achieve the effect of reducing the total calculation amount, shortening the execution time, and improving the real-time response efficiency
Active Publication Date: 2021-03-26
BEIJING JIAXUN FEIHONG ELECTRIC CO LTD
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In the process of zooming the resolution of the existing video sequence, every time a pixel is generated for each frame of the target image, at least a dozen multiplications need to be performed before modification, which makes the total calculation amount of image scaling larger and reduces the cost of scaling the video sequence resolution. Efficiency, increased occupation of system resources
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[0033] The technical content of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0034] In order to increase the speed of scaling video sequence resolution and reduce the occupation of system resources, such as figure 1 As shown, the present invention provides a method for zooming video sequence resolution, comprising the steps of:
[0035] Step S1: Judging frame by frame whether the source image satisfies the preset condition.
[0036] Since the video is composed of consecutive frames of images, when scaling the resolution of the video sequence, that is, when scaling the resolution of each frame of image input in the video sequence frame by frame, it is necessary to judge whether the source image meets the preset requirements frame by frame. set conditions. Among them, the preset condition is: the current frame source image is the first frame image of the video sequence, or the resoluti...
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The invention discloses a method and a device for zooming the resolution of a video sequence. The method comprises the following steps: S1, judging whether a source image meets a preset condition frame by frame; s2, if the source image of the current frame meets a preset condition, obtaining an interpolation pixel coordinate table and a weighting coefficient table of all pixel points of the targetimage corresponding to the source image by utilizing an interpolation algorithm; and S3, if the source image of the current frame does not meet the preset condition, obtaining a scaled image according to the interpolation pixel coordinate table and the weighting coefficient table of all pixel points of the obtained target image corresponding to the source image. According to the method, the totalcalculation amount of image scaling is reduced, so that the execution time of image scaling is shortened, and the real-time response efficiency of the system is improved. In addition, the method cangenerate an optimization effect on various image stretching algorithms, and has certain universality.
Description
technical field [0001] The invention relates to a method for scaling the resolution of a video sequence and a corresponding device for scaling the resolution of a video sequence, belonging to the field of video image processing. Background technique [0002] At present, digital image processing is more and more widely used in digital communication, intelligent analysis and other fields. Before the video sequence is encoded, analyzed, enhanced, displayed, etc., there is a need to scale the resolution of the video sequence, that is, to scale the video sequence from the resolution of the source image to the resolution of the target image. [0003] Scaling video sequence resolutions takes a non-negligible amount of memory bandwidth and computation throughout image processing. In the process of zooming the resolution of the existing video sequence, every time a pixel is generated for each frame of the target image, at least a dozen multiplications need to be performed before mod...
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IPC IPC(8): H04N7/01H04N21/2343H04N21/4402
CPCH04N7/0117H04N21/234363H04N21/440263
Inventor 管超
Owner BEIJING JIAXUN FEIHONG ELECTRIC CO LTD