A video data pre-distortion processing method, device and head-mounted display

A technology of video data and processing method, which is applied in the field of video data processing, can solve the problems of multi-memory read and write bandwidth, affect the speed of video data pre-distortion processing, and large storage space, so as to improve speed, reduce memory read bandwidth, The effect of reducing storage space

Active Publication Date: 2018-05-15
BEIJING PICO TECH
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Problems solved by technology

[0003] The present invention provides a video data pre-distortion processing method, device and head-mounted display to solve the problem that in the prior art, the Map table requires a large storage space, occupies more memory read and write bandwidth, and affects the speed of video data pre-distortion processing The problem

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  • A video data pre-distortion processing method, device and head-mounted display
  • A video data pre-distortion processing method, device and head-mounted display
  • A video data pre-distortion processing method, device and head-mounted display

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Embodiment Construction

[0034] The core idea of ​​the present invention is to provide a relative data storage method for the problem of large amount of data stored in the Map table during pre-distortion processing of video data in the prior art, occupying more memory bandwidth, and reducing the speed of pre-distortion processing. The table is compressed, so that the pixels after video distortion processing can be expressed by the input coordinates of the positioning pixel coordinates, the output coordinates, and the relative input coordinates of other pixels in the same line and the positioning pixel points, saving the storage of the Map table Space reduces the amount of data stored in the Map table, and when the compressed Map table of the present invention is used for pre-distortion processing, the speed and efficiency of pre-distortion processing are greatly improved.

[0035] figure 1 It is a schematic flow chart of a video data pre-distortion processing method according to an embodiment of the p...

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Abstract

The invention discloses a video data pre-distortion processing method, device and head-mounted display. The processing method includes: reading an original Map table for pre-distortion processing on video data, and storing each pixel in a video frame in the original Map table. input coordinates and output coordinates; determine the positioning pixel point of each row in the video frame after pre-distortion processing, and the relative positional relationship between the positioning pixel point and the pixel point of the same row; obtain each video frame after pre-distortion processing according to the original Map table The number of row pixels, the input coordinates and output coordinates of the positioning pixel points, and the relative input coordinates of each row of pixel points and the positioning pixel points of the row after pre-distortion processing, obtain the compressed Map table; use the compressed Map table Perform pre-distortion processing on the received video data. The video data pre-distortion processing method of the present invention can reduce the data amount and required storage space during video data pre-distortion processing, and reduce memory read bandwidth.

Description

technical field [0001] The present invention relates to the technical field of video data processing, in particular to a video data pre-distortion processing method, device and head-mounted display. Background technique [0002] When the video data is output and displayed, sometimes data deformation or distortion occurs. The distortion seriously affects the experience of the video viewer and reduces the user experience. Therefore, it is necessary to pre-distort the original video data. A pre-distortion processing method is to use a Map table (ie, a Map lookup table) to pre-distort the video data. However, when the existing Map table stores the pixels of each frame of video data, the distortion of all pixels before and after The coordinates are stored, that is to say, each Map data contains pixel output coordinates and input coordinates, each pixel needs 8Byte to store, and video data usually contains a large number of pixels, each pixel occupies 8Byte, then The storage spac...

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H04N5/14H04N5/208
Inventor范传国马金波赵文慧王冲
OwnerBEIJING PICO TECH