A Realization Method of Space Transformation in Three-Dimensional Space
A technology of space transformation and implementation method, which is applied to the parts of color TV, parts of TV system, image data processing, etc., and can solve problems such as inability to realize three-dimensional space effects and complex rendering engine
Active Publication Date: 2017-03-01
北京锦颂创逸技术科技有限公司
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Problems solved by technology
[0005] Simple two-dimensional space transformations include translation, scaling, or rotation around the center, which cannot achieve real three-dimensional space effects
[0006] At present, the realization of three-dimensional space transformation is based on the GPU (Graphic Processing Unit, graphics processing unit) rendering engine, and it is more complicated to build the entire rendering engine of the GPU.
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[0016] 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 part of the embodiments of the present invention, not all of them. Based on this The embodiments in the invention, and all other embodiments obtained by persons of ordinary skill in the art without creative effort, all belong to the scope of protection of the present invention.
[0017] Realize the effect of spatial transformation of objects in three-dimensional space, such as figure 1 The method for realizing the spatial transformation in the three-dimensional space shown is specifically:
[0018] Step S1: Calculate the world matrix according to the space transformation attribute value of the object in the world space. The space transformation attributes of an object in the world space generally include translation, rota...
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The invention discloses a method for realizing space transformation in a three-dimensional space. The method specifically comprises the steps of: calculating a world matrix according to object world spatial attribute values; establishing an observation matrix and a projection matrix according to a parameter of a camera; carrying out perspective division on pixel values subjected to matrix transformation and converting into coordinates of a screen; and with four pixels in two adjacent rows and two adjacent lines as a unit, searching a maximum bounding box of the four pixels after converting into the coordinates of the screen and filling the bounding box. According to the invention, the transformation, namely, three-dimensional spatial transformation realized on the basis of pixel grades, of a two-dimensional object in a three-dimensional space can be realized.
Description
technical field [0001] The invention relates to the technical field of subtitle production in the field of radio and television, in particular to a method for realizing spatial transformation in three-dimensional space. Background technique [0002] At present, subtitle machines have been widely used in news, finance, sports, variety shows, talk, TV drama production and other programs. [0003] The subtitle machine is generally composed of a PC plus a professional subtitle superimposition card and corresponding software, which is used to superimpose graphic subtitles on the video signal. Its characteristics are: real-time superimposition, no need to generate, bright colors, and small signal loss. It is suitable for superimposing TV station logos, corner logos, and left fly advertisements. [0004] The module composition of the subtitle system: the creation of graphic elements, the static rendering of graphic elements, the operation of graphic elements, the dynamic broadcast...
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IPC IPC(8): H04N5/278G06T13/20
Inventor 蔡欢郭红艳陈立爱刘沐
Owner 北京锦颂创逸技术科技有限公司