Method for overlaying pictures in video

A video and picture technology, applied in the video field, can solve the problems of no transparent gradient effect, stiff and unnatural feeling, etc., and achieve the effect of clear and beautiful display, time saving, flexible collocation and reuse

Inactive Publication Date: 2012-09-19
TVMINING BEIJING MEDIA TECH
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Problems solved by technology

But the disadvantage of this method is that there is no transparent gradient effect at the connection between the added picture and the source video image, which feels stiff and unnatural, and the picture needs to be in the same format as the source video image

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  • Method for overlaying pictures in video
  • Method for overlaying pictures in video

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Embodiment Construction

[0025] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0026] The technical idea of ​​the present invention is mainly based on the Directshow technology, using a transform filter component as a video overlay module. Directshow technology is an application programming interface developed by Microsoft that enables software developers to process audio and video files. By adding filters with specific functions to the filter graph (FilterGraph), and combining them in a certain order, various video processing functions can be realized. Image overlay filter (LogoFilter) is a function-independent Directshow Filter. The position in the system is between the video decoding module and the video encoding module.

[0027] After the video is decoded, the image overlay filter (LogoFilter) will obtain the source video frame image in YUV format. At this point, the pi...

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Abstract

The invention discloses a method for overlaying pictures in a video, which comprises the steps: constructing a filter chart according to Directshow standards and adding a picture overlaying filter assembly into the filter chart; connecting input and output PIN ports of the picture overlaying filter assembly; setting a storage position of the pictures at one interface of the picture overlaying filter assembly and setting starting coordinates of a placing position of the pictures at another interface, and adding an ALPHA channel value into the pictures; reading data of pictures by the picture overlaying filter assembly and converting the data into a YUV structure; obtaining frame images of the decoded source video and overlaying the pictures; and sending the frame images overlaid with the pictures to a filter of next level. With the adoption of the technical scheme, the pictures in the video are enabled to be displayed more clearly and beautifully, convenience is provided for subsequent operation, and the time spent in overlaying the pictures is saved.

Description

technical field [0001] The invention relates to the field of video technology, in particular to a method for superimposing pictures in a video. Background technique [0002] When making a video, it is often necessary to insert a LOGO into the video. At present, the method of directly covering the video image with the LOGO picture value is usually used to add the LOGO to the video. But the disadvantage of this method is that there is no transparent gradient effect at the connection between the added picture and the source video image, which feels stiff and unnatural, and the picture needs to be in the same format as the source video image. Contents of the invention [0003] The purpose of the present invention is to propose a method for superimposing pictures in a video, which can ensure that the pictures are displayed clearly and beautifully in the video, provide convenience for subsequent operations, and save time for superimposing pictures. [0004] For reaching this p...

Claims

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Application Information

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IPC IPC(8): H04N5/262H04N7/26H04N9/64H04N19/117
Inventor 王建杨波
Owner TVMINING BEIJING MEDIA TECH
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