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Method for defining pixel area of pixel space mask matrix

A technology of pixel area and mask matrix, applied in the field of TV program production, can solve the problem that the subtitle system is difficult to meet the requirements, and achieve the effect of ensuring the implementability

Inactive Publication Date: 2010-06-30
北京市文化科技融资租赁股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the subdivision of TV channels and program content, the division of labor of various departments has become more specialized. For the production of different types of programs, it is difficult to meet the requirements with a single type of subtitle system.

Method used

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  • Method for defining pixel area of pixel space mask matrix
  • Method for defining pixel area of pixel space mask matrix
  • Method for defining pixel area of pixel space mask matrix

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Experimental program
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Embodiment Construction

[0030] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] In the current subtitle system used for TV program production, there are generally low rendering efficiency, edge aliasing effect, blurred and unclear small characters, uneven stroke thickness of characters, unreal gradient effect, and unrealistic rendering effects of polygons and shadows. A series of technical and application problems such as word art effects can be solved by converting the vector information of the subtitle object into a pixel mask matrix based on contour lines, and then rendering subtitles on this basis. This technology is called a subtitle rendering method based on a closed-loop area of ​​a curve outline and a pixel mask matrix (for details, please refer to the patent applied for at the same time).

[0032] The key step of the above method is firstly the generation of finite closed loop domains. A finite closed ri...

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Abstract

The invention relates to caption rendering technology, belonging to television program production field, particularly to a method for defining the pixel area of a pixel space mask matrix in caption rendering based on a pixel space mask matrix model. The method is as follows: traversing the vector contours of the polygons of the caption objects, traversing each side of the N closed polygons of thecaption objects, calculating the contribution value of each side to the areas of all the pixels which pass the side, and accumulating the pixel areas (Area) of the same pixel. In this way, desired result can be obtained. As for caption objects with various original contour shapes, the method can rationally and accurately calculate the area of the polygon made up by all the contour boundaries passing one pixel, thereby providing a premises and a basis for defining the pixel type and for anti-aliasing treatment of the boundary pixels and ensuring the feasibility of implementation of the captionrendering method based on the pixel space mask matrix model.

Description

technical field [0001] The invention relates to subtitle rendering technology in the field of television program production, in particular to a method for determining the pixel area of ​​a pixel space mask matrix in subtitle rendering based on a pixel space mask matrix model. Background technique [0002] Because TV subtitles have an independent ideographic function, as a necessary TV program element, TV subtitles are an important display form of TV graphics. With the subdivision of TV channels and program content, the division of labor of various departments has become more specialized. For the production of different types of programs, it is difficult to meet the requirements with a single type of subtitle system. In addition, the increasing diversity of TV programs and the continuous improvement of TV viewers' appreciation and appreciation level also require that the application mode of TV subtitles must develop in the direction of diversity. [0003] From a broad point ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/278G06T11/00G06T15/00G06T1/00
Inventor 吴正斌袁慧晶
Owner 北京市文化科技融资租赁股份有限公司