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3D projection method and device

A technology of three-dimensional projection and projection, which is applied in the field of three-dimensional projection, can solve the problems of reducing three-dimensional projection efficiency, inconsistent storage methods, and inability to achieve real-time processing and real-time output, and achieve the effect of improving three-dimensional projection efficiency and output efficiency

Active Publication Date: 2015-07-22
北京炬力北方微电子股份有限公司
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Problems solved by technology

[0006] Secondly, the 3D projection image obtained after the 3D projection processing of the macroblocks or triangles is stored in the form of macroblocks or triangles, and usually the output display sequence of the 3D projection images is to display the 3D projection images line by line, which is different from the storage method Inconsistency, so additional buffer space is required to store the complete frame of the 3D projection image, but real-time processing and real-time output cannot be achieved, which reduces the efficiency of 3D projection

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[0053] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0054] In order to improve the three-dimensional projection efficiency, the method adopted in the present invention is: set the line buffer, according to the set segment, buffer the pixel point data in the source plane image in the required memory, the set segment is based on the three-dimensional The projection angle and distance are determined; the corresponding pixel point data in the source plane image is obtained from the line buffer, and the output of the three-dimensional projection image is constructed; the output three-dimensional projection image is stored and / or displayed. The above three processes can be carried out at the same time, reducing redundant data access by segmenting the row buffer, that is, reducing the amount of data accessed to ...

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Abstract

The invention discloses a 3D projection method and device. The method comprises that a row buffer area is arranged, and needed pixel data in a source planar image in a memory is buffered according to set segments; a target area of 3D projection is arranged; according to the projection correspondence between the target area of 3D projection and a 3D projection plane, corresponding coordinates of the pixels of the target area in the source plane image are calculated; according to the coordinates in the source plane image, pixel data in the source image data is obtained from the arranged row buffer area; and the pixel data is output corresponding to the coordinates of the pixels of the target area. Pixel data corresponding to the coordinates of the pixels of the target area can be directly stored and / or displayed subsequently. The method and device can improve the 3D projection efficiency.

Description

technical field [0001] The invention relates to image processing technology, in particular to a three-dimensional projection method and device. Background technique [0002] With the development of projection technology, images can be projected in three dimensions. When performing three-dimensional projection, the image accelerator reads the pixel point data in the source image required for three-dimensional projection from the memory, constructs a three-dimensional projection image, and outputs it for display. In this process, the efficiency of the three-dimensional projection will be low, mainly due to the low efficiency of obtaining the pixel point data of the required source image. The coordinates of the pixel point data in the source image corresponding to adjacent pixels in the 3D projection image vary greatly, so the memory address of the pixel point data of the source image required for 3D projection also changes greatly, especially This feature is especially notic...

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Application Information

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IPC IPC(8): H04N5/74H04N9/31
Inventor 刘仁品
Owner 北京炬力北方微电子股份有限公司
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