A Method of Suppressing Image Flickering Stripes
An image and fringe technology, which is applied in the field of suppressing image flickering fringes, can solve the problems of large calculation amount of estimation algorithm, flickering fringe cycle and image background limitation, etc.
Active Publication Date: 2019-03-15
北京中星天视科技有限公司
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[0003] In view of this, an embodiment of the present invention provides a method for suppressing flickering stripes in an image, which solves the problem that the existing estimation algorithm has a large amount of calculation, and the suppression process is limited by the flickering stripe period and the image background
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[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0021] figure 1 It is a flowchart of a method for suppressing image flickering stripes provided by an embodiment of the present invention. Such as figure 1 As shown, the method includes the following steps:
[0022] Step 101: Obtain the row mean value vector of at least one frame of image in the video sequence to be processed; each element in the row mean value vector is the mean value of the pixel values of a row of pixels in the current frame image.
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The embodiment of the invention provides a method for restraining image flickering streaks. The problem that an existing estimation algorithm is large in computing amount, and a restraining process is limited by a flickering streak cycle and an image background is solved. The method for restraining the image flickering streaks comprises the steps that a line mean vector of at least one frame of image in a video sequence to be processed is obtained; each element in the line mean vector is a mean value of pixel values of a line of pixels in the current frame of image; the elements of a continuous part of the line mean vector are used for supplementing missing elements of the line mean vector caused by a vertical blank line of the current frame of image; a band-pass filter is used for carrying out filtering processing on the line mean vector, and flickering streak information is obtained; and values of a corresponding line in the flickering streak information is subtracted from the pixel values in the current frame of image.
Description
technical field [0001] The invention relates to video image processing technology, in particular to a method for suppressing image flickering stripes. Background technique [0002] In the prior art, the method for suppressing image flickering stripes (hereinafter referred to as Flicker) is mainly to obtain a Flicker model through a certain estimation algorithm, and compensate the stripes in the image through the Flicker model. An existing estimation algorithm is to estimate the Flicker sinusoid with ideal amplitude and phase according to the brightness. However, this estimation process requires iterative calculations, and the amount of calculation is very large, and because the periodic amplitude of the flicker stripes itself is not constant, the resulting flicker curve is not a standard sinusoidal curve, so this algorithm cannot completely suppress the flicker flicker in the image. Flicker. Another estimation algorithm is to estimate the Flicker model according to the uni...
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IPC IPC(8): H04N5/21
Inventor 王美荣汪源
Owner 北京中星天视科技有限公司