Image-text superposing method and device

A superimposition method and a technology of layer superposition, applied in image communication, selective content distribution, electrical components, etc., can solve the problems of large number of equipment, high cost, loss of video quality, etc., to ensure quality, reduce production costs, and save The effect of the number of devices

Inactive Publication Date: 2017-09-26
成都德芯数字科技股份有限公司
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Problems solved by technology

Among them, the subtitle machine converts the video signal through AD/DA, thus losing the video quality
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  • Image-text superposing method and device
  • Image-text superposing method and device
  • Image-text superposing method and device

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[0050] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention generally described and illustrated in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the protection scope of the present invention.

[0051] It...

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Abstract

The invention provides an image-text superposing method and device which are applied to an image-text superposing terminal. The method comprises the following steps: converting received video stream data into a digital video stream; acquiring image-text data; performing layer superposition on the converted digital video stream and the acquired image-text data, so as to generate an image-text data-containing digital video stream; performing compressed encoding on the image-text data-containing digital video stream, so as to generate image-text data-containing TS stream data. According to the image-text superposing scheme provided by the invention, by layer superposition of the input video stream data and the acquired image-text data, then compressed encoding of the image-text data-containing video stream and final video outputting, the image-text superposing scheme improves the system integration degree, so that the quality of a video signal is guaranteed, the quantity of equipment is reduced, and the production cost is lowered.

Description

technical field [0001] The present invention relates to the technical field of radio and television, in particular to a method and device for overlaying images and texts. Background technique [0002] With the development of science and technology and the improvement of people's living standards, video has become an irreplaceable and important way for people to work, study, socialize, and entertain. At present, in the video editing system, the commonly used graphics and text superimposition coding scheme is to first process the video signal through the subtitle machine or the editing system for graphics and text superposition processing, and then send the video signal to the encoder through the SDI and HDMI interface. The encoder encodes the processed video for transmission. Among them, the subtitle machine converts the video signal through AD / DA, thereby losing the video quality. Moreover, in the existing method, the number of devices is large when building the system, an...

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Application Information

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IPC IPC(8): H04N21/236H04N21/43H04N21/431H04N21/488H04N21/8547
CPCH04N21/23608H04N21/4305H04N21/4307H04N21/4314H04N21/4884H04N21/8547
Inventor 唐俊辉李俊
Owner 成都德芯数字科技股份有限公司
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