Method for screening images and system thereof

A screening method and image technology, applied in the field of image screening method and its system, can solve the problems of high labor cost, black screen of image, and surprising number of video files, etc., and achieve the effect of improving efficiency, clear picture, and improving loyalty

Inactive Publication Date: 2011-06-08
BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD
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  • Application Information

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Problems solved by technology

However, there is currently no in-depth research on this technology, and no corresponding solutions have been proposed.
Therefore, if only a simple and incomplete technical analysis is performed on the video image, it is very likely that the screened image will also have defects such as black screen, green screen, too dark, blurred image content, ghosting, mosaic, and no main content. Therefore, the application Poor prospects
[0006] Of course, netizens/website staff can also obtain vid...

Method used

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  • Method for screening images and system thereof
  • Method for screening images and system thereof
  • Method for screening images and system thereof

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Embodiment Construction

[0071] Before introducing specific embodiments, the basic idea of ​​screening images is briefly explained. In order to realize that the screened images can meet the following requirements: reflect the theme of the video, the picture is clean and clear, and / or the main content is prominent, it is necessary to quantify the corresponding features through some technical parameters, so that technical means can be used to automatically and quickly screen out the images that meet expectations. Video pictures, so as to meet the needs of solving technical problems.

[0072] Reflecting the theme of the video: A video file often describes multiple content entities (characters, plots, etc.), and there are many different scenes. It is difficult to represent the entire video with only one image. It is difficult to achieve the theme of the video. So in this aspect, the focus is on the aspect of filtering defect (casebase), rather than on the semantic analysis of each frame. The badcases filte...

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Abstract

The invention provides a method for screening images without mosaic or with little mosaic, and a system thereof; a method for screening clear images and a system thereof; and a method for screening images and a system thereof. The method for screening video images comprises the following steps of: converting the video images into gray scale images, filtering monochrome images; screening the images without mosaic or with little mosaic by the method for screening the images without mosaic or with little mosaic; calculating information entropy of the screened images in order to screen the images with more information quantity; dividing golden visual regions of the screened images in order to calculate marginal density of each region and obtain the marginal density ratio of the images; respectively calculating normalized marginal gradient values of the screened images; and calculating the weighting sum of the marginal density ratio and the marginal gradient values, and screening the video images with the maximum weighting sum. The method and the system provided by the invention can conveniently and fast screen the video images satisfying the needs, improve the screening efficiency, be good for searching and screening the video files, and improve loyalty of users to access the website.

Description

technical field [0001] The invention relates to the field of video image processing, in particular to an image screening method and system thereof. Background technique [0002] Video sharing refers to a service in which netizens or website staff upload video files to sharing websites, and the sharing website staff perform necessary technical processing on the video files before providing them to users for sharing. At present, relatively well-known video sharing websites include foreign YouTube, domestic Youku, Tudou, etc., which are video sharing websites frequently visited by ordinary netizens. Generally speaking, the necessary technical processing of video files mainly involves video transcoding, cover extraction, clipping, storage, and yellow anti-filtering. [0003] When a netizen visits a video sharing website and browses a video file, he first sees a text description of a certain video file and a picture representing the content of the video. We call this picture the...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06F17/30
Inventor 文林福
Owner BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD
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