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Decimal lookup table generation method for video stitching

A video splicing and look-up table technology, applied in image data processing, instruments, computing, etc., can solve the problems of slow speed, large amount of calculation, and difficulty in meeting the real-time requirements of video splicing.

Active Publication Date: 2014-01-01
NAT UNIV OF DEFENSE TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional image registration process includes steps such as projection transformation, feature point detection and matching, and mismatch point filtering. The calculation is large and the speed is slow, which is difficult to meet the real-time requirements of video stitching.

Method used

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  • Decimal lookup table generation method for video stitching
  • Decimal lookup table generation method for video stitching
  • Decimal lookup table generation method for video stitching

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Embodiment Construction

[0037] The present invention will be further described below with reference to the drawings and specific embodiments.

[0038] The invention provides a method for generating a decimal lookup table for video splicing, such as figure 1 As shown, including the following steps:

[0039] S1, coordinate projection: project the photographed images to be spliced ​​into a standard coordinate system;

[0040] S2, feature point detection and matching: perform feature point detection and matching on the image projected in step S1 to obtain an initial matching feature point set;

[0041] S3. Filter out mismatched points: filter out mismatched points in the initial matching feature point set to obtain a final matching feature point set;

[0042] S4. Construct a decimal lookup table: use the feature point coordinates in the final matching feature point set of two adjacent images to solve the transformation relationship between the captured image and the stitched image coordinates, and establish the de...

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Abstract

The invention belongs to the field of graphic information processing, and provides a decimal lookup table generation method for video stitching. The decimal lookup table generation method for video stitching comprises the steps of coordinate projection, feature point detection and matching, filtering of erroneous matching points and construction of a decimal lookup table. According to the decimal lookup table generation method for video stitching, first, coordinate projection is conducted, wherein images to be stitched are projected to a standard coordinate system; then, feature point detection and matching is conducted, and the erroneous matching points are filtered; finally, the decimal lookup table is constructed and clipped according to the size of a stitched video, and a stitched video image is obtained by means of the decimal lookup table through bilinear interpolation. According to the decimal lookup table generation method for video stitching, a one-to-one mapping relation between shot images and stitching image coordinates can be obtained to meet the requirement for instantaneity of video stitching; meanwhile, the decimal lookup table is more natural than an integer lookup table in transition, and therefore an ideal visual effect can be achieved.

Description

Technical field [0001] The invention relates to a method for generating a decimal lookup table for video splicing, belonging to the field of image information processing, and specifically includes coordinate projection, feature point detection and matching, filtering out mismatched points and constructing a decimal lookup table. Background technique [0002] Video splicing technology breaks through the physical limitations of camera acquisition sensors. By splicing video sequences shot by multiple cameras at the same time, high-resolution panoramic videos can be obtained, which can greatly improve people's dynamic perception, discrimination and monitoring capabilities of things and scenes. The application of video splicing technology in the military field can provide all-round scene information for military reconnaissance, which is of great significance for battlefield information perception, intelligence acquisition and combat command. [0003] The key points of video splicing tec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00
Inventor 张茂军王炜熊志辉尹晓晴谭树人徐玮刘煜张政李靖彭杨
Owner NAT UNIV OF DEFENSE TECH
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