A method and device for detecting blurred screen images
A technology of blurred screens and images, applied in the field of image processing, can solve problems such as low efficiency in identifying blurred screens, affecting user video viewing experience, and failure to identify videos with blurred screens in time, and achieves high detection efficiency
Active Publication Date: 2021-10-15
ALIBABA (CHINA) CO LTD
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[0004] However, such a method cannot identify videos with blurred screens in time. Instead, users need to watch the blurred screens and feed back prompt information before they can determine the videos that contain blurred screens.
Obviously, this method has low efficiency in identifying blurry images, and will affect the user's video viewing experience
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[0015] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The implementations are only some of the implementations of the present application, not all of them. Based on the implementation manners in this application, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts shall fall within the scope of protection of this application.
[0016] The present application provides a method for detecting blurry images, which can be applied to a server of a video playing platform, or can be applied to an independent device with an image processing function. see figure 1 and figure 2 , the method may include the following steps.
[0017] S1: ...
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The embodiment of the present application discloses a method and device for detecting blurred screen images, wherein the method includes: acquiring the target image to be processed in the currently played target video, and calculating the edge image corresponding to the target image; wherein, the The pixels in the edge image have a grayscale gradient value; the edge image is divided into a specified number of sub-blocks, and according to the grayscale gradient value of the pixel point in the sub-block, from the specified number of sub-blocks Screen out the candidate sub-blocks; detect the gray gradient value of the pixels on the boundary of the candidate sub-blocks, and judge whether the candidate sub-blocks are blurred screen sub-blocks according to the detection results; count the blurred screen sub-blocks in the edge image If the total number is greater than a specified threshold, it is determined that the target image is a blurry image. The technical solution provided by the present application can improve the detection efficiency of blurry images.
Description
technical field [0001] The present application relates to the technical field of image processing, in particular to a method and device for detecting blurry images. Background technique [0002] With the continuous development of video playback technology, a large number of video playback platforms have emerged. The user client can pull the video stream from the video playback platform, and play the corresponding video content after decoding the video stream. However, in the decoded video images, some video images may not be displayed normally. At present, a relatively common abnormal video picture is a blurry picture. In the blurry picture, some unrecognizable blocky patterns may appear on some pictures due to data packet loss. [0003] At present, videos with blurred screen images are usually processed according to user feedback during video viewing. For example, when a user watches a loaded video, if there is a blurred screen in the video, the user can send a prompt me...
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IPC IPC(8): H04N17/00H04N21/4425
CPCH04N17/004H04N21/4425
Inventor 赵明菲彭俊张磊
Owner ALIBABA (CHINA) CO LTD