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System and method for providing high quality subtitle adding in video stream

A video streaming, high-quality technology, used in parts of TV systems, parts of color TVs, TVs, etc.

Inactive Publication Date: 2009-07-08
SHENZHEN ZTE NETVIEW TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Therefore, in order to solve the existing effects of superimposing subtitles on video images under video surveillance, when resolution or code stream changes have an impact on superimposed subtitles, the present invention provides a subtitle superimposition system suitable for image or video content and method

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  • System and method for providing high quality subtitle adding in video stream

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Embodiment Construction

[0034] Technical scheme of the present invention comprises the steps:

[0035] See Figure 4As shown, the present invention includes a control module, an image scaling module, a font selection and conversion module, an image subtitle mixing module, an image compression decoding module, an image header data module, a network transmission module, a network receiving module, a video header data analysis module, and a backend Overlay subtitle information module, image decoding module. Wherein the control module mainly selects the size of the used resolution and the size of the used Chinese character library according to the video parameters; the image scaling module mainly zooms the image according to the resolution set by the control module, and the original image is 720 x 576 (P format), 720 x 480 (N format), when the resolution is D1, the scaling ratio is 1:1, when the resolution is 2CIF, the scaling ratio is 1:2, when the resolution is and D1, the scaling ratio is 1:2 , when...

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Abstract

The invention provides a system for providing high-quality caption superposition in video flow and a method thereof. The system comprises an image and caption mixing module, an image zooming module, a control module, an image compression encoding module, a network transmission module, a decoder video head data analysis module, a video decoding display module and a back end caption information superposition module. The control module determines whether caption superposition is required before video data superposition. If the caption superposition is required, the caption is superposed at the front end or back end is determined according to the adopted resolution factor and code flow information. Then the caption superposition is executed purposefully from the front end or back end. The invention settles the problem that the display of caption which is superposed in the video image is unclear when the resolution factor is changed or under the lower code flow. The magnitude of caption does not change along with the change of video resolution factor or along with the change of code flow. The clear OSD caption is always displayed in the video decoding image.

Description

technical field [0001] The present invention relates to an image or video signal processing system and method in the field of video surveillance, in particular, it relates to superimposing content such as subtitles, date, time, etc. into video images in the field of video surveillance, and can continuously display high-quality, high-quality A system and method for high-definition subtitle overlay content. Background technique [0002] At present, in the field of video surveillance, it is necessary to superimpose some information of time, date and scene into the video image. For monitoring personnel to monitor, this information also needs to be preserved for future reference. In Chinese patent: 200610029649.1, Chinese patent: 200610029650.4, Chinese patent: 200710194751.1, Chinese patent: 200610001243.2, Chinese patent: 01136295.2, all have explained how to superimpose subtitles on video images, but these are only how to superimpose subtitles on video images, and There is n...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/08H04N5/278
Inventor 翟卫东张雪林唐李卉周锐鹏吴贻刚易敏
Owner SHENZHEN ZTE NETVIEW TECH