A light field image mosaic method based on super pixel

A light field image, super pixel technology, applied in image data processing, graphic image conversion, instruments, etc., can solve the problem of result dislocation, ghosting, etc., to expand the viewing angle, improve flexibility and accuracy, accurate large parallax light The effect of field stitching

Active Publication Date: 2018-12-21
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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Problems solved by technology

[0006]In order to solve the above technical problems, the present invention proposes a superpixel-based light field stitching method, which solves the problems of dislocation and ghosting of results caused by large parallax changes. Accurate parallax-tolerant light-field stitching method achieved

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  • A light field image mosaic method based on super pixel
  • A light field image mosaic method based on super pixel
  • A light field image mosaic method based on super pixel

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Embodiment Construction

[0040] The present invention will be further described below with reference to the accompanying drawings and in combination with preferred embodiments. In a specific embodiment, it can be operated in the following manner. It should be noted that the types of light field images and feature extraction, matching, and fusion in the following implementation process are only illustrative examples, and the scope of the present invention is not limited to the enumerated methods.

[0041] Such as figure 1 As shown, the preferred embodiment of the present invention discloses a parallax-tolerant light field image stitching method based on superpixels, including the following steps:

[0042]A1: Input the light field data to be spliced, perform decoding and preprocessing to obtain the light field sub-aperture image; and perform feature point extraction, matching and screening on the light field sub-aperture image to obtain feature points and feature point pairs in the light field sub-aper...

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Abstract

The invention discloses a light field image mosaic method based on super pixels, which comprises the following steps: inputting light field data to be mosaic to obtain light field sub-aperture images,extracting feature points, matching and screening, and predicting a global homography transformation matrix according to the feature points; the subaperture image of light field being segmented intosuperpixels, and the homography transformation matrix corresponding to each superpixel being predicted according to the feature points under the current depth hypothesis, and the light field being mapped according to the homography transformation matrix, and the optimal depth hypothesis being evaluated and selected as the superpixel hierarchy map; the weight matrix of local mapping being established, and then the optimal homography transformation matrix of each super pixel being predicted according to the global homography transformation matrix and the weight matrix of local mapping, and the light field being mapped according to the optimal homography transformation matrix of each super pixel; the light field being fused to get the result of light field splicing. The invention solves the problems of misalignment and ghost caused by large parallax variation, and realizes the accurate parallax tolerance light field splicing method.

Description

technical field [0001] The invention relates to the fields of computer vision and digital image processing, in particular to a superpixel-based light field image stitching method. Background technique [0002] At present, light field imaging technology is a key technology in the field of computer vision and digital image processing. It records light information from various directions by adding a microlens array between the main lens and the sensor, so as to obtain complete information of the light field. radiation field. With the continuous increase in the resolution of optical sensors and the gradual marketization of light field cameras, the practical value of light field imaging technology is becoming higher and higher. Compared with traditional digital cameras, the advantage of light field cameras based on microlens arrays is that while recording the spatial position information of the scene, it also preserves the direction information of light, so it can be widely used...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/40
CPCG06T3/4038
Inventor 金欣王培戴琼海
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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