2D or multi-viewpoint naked eye 3D video data storing and reading-writing method

Abstract

The invention discloses a 2D or multi-viewpoint naked eye 3D video data storing and reading-writing method. The method comprises the steps that data are stored into an SDRAM or read from the SDRAM in a burst mode; (1), in the writing process, the video data are written into a writing-end asynchronous FIFO line by line through a writing-end module, and the writing-end asynchronous FIFO receives the video data, stores the video data and then stores the video data into the SDRAM, wherein the video data comprise N viewpoints, each viewpoint comprises M lines, each line comprises K burst data, the SDRAM comprises H banks, and in the storing process, every two adjacent burst data in each same line are stored in different banks; (2), in the reading process, N reading-end asynchronous FIFOs read the video data from the SDRAM, secondary view fields read the data line by line, adjacent burst data are operated in different banks, and synchronism of data of the secondary view fields is guaranteed. By means of the method, the resource and bandwidth utilization ratio of the SDRAM can be effectively increased, and consumption of hardware resources can be lowered.

Description

Technical field [0001] The invention belongs to the field of image processing, and relates to a method for storing and reading video data compatible with 2D and multi-view naked-eye 3D. Background technique [0002] Stereoscopic display technology can express the depth of field, layering and realism of images, and has a wide range of applications, which has become the development trend of future display technology. The naked-eye stereoscopic display can see good stereoscopic effects without glasses, and has broad application prospects in commercial markets such as advertising machines. [0003] There are five main reasons for the human visual system to produce stereo vision for objects: lens adjustment, binocular radiative angle, binocular parallax, monocular motion parallax and gathering effect. Among them, binocular stereo vision based on binocular parallax is the main factor. At present, almost all 3D TVs are based on the principle of binocular stereo vision to allow viewers to...

AI Technical Summary

Problems solved by technology

In practical applications: On the one hand, during the storage process of traditional 2D video, since the address mapping relationship between image data and SDRAM is not strictly determined, SDRAM (including DDR2SDRAM, DDR3SDRAM) may frequently switch rows in the same bank when accessing data. address, resulting in additional data delay, which greatly reduces the bandwidth utilization of SDRAM; on the other hand, when multi-view naked-eye 3D image display pixel synthesis, the zoom results of each sub-field of view need to be used at the same time, so the zooming operations of each field of view must be performed simultaneously Or close to the same time, otherwise, additional line memory or frame memory will be required as a synchronization buffer, and corresponding synchronization mechanism logic will need to be designed, which will not only consume hardware resources but also waste storage bandwidth

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