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Light field camera full-focus image fusion algorithm for guiding angle information through space information

An all-focus image and spatial information technology, applied in image enhancement, image analysis, image data processing and other directions, can solve the problem of 4-dimensional information not being used reasonably

Active Publication Date: 2020-10-16
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

Because the angle information (u, v) of the light field is lost in the integration process, only the spatial information (x, y) of the light field is retained, so the 4-dimensional information of the light field is not properly utilized in the data fusion process

Method used

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  • Light field camera full-focus image fusion algorithm for guiding angle information through space information
  • Light field camera full-focus image fusion algorithm for guiding angle information through space information
  • Light field camera full-focus image fusion algorithm for guiding angle information through space information

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Embodiment Construction

[0048] In order to make the purpose, features and advantages of the present invention understandable, the specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0049] The light field camera all-focus image fusion algorithm based on spatial information guiding angle information of the present invention starts from the 4-dimensional information of the light field and combines the characteristics of the light field image to improve the framework of the traditional guiding filtering algorithm, and the improved guiding filtering data fusion framework Such as figure 1 As shown, the main data operation process can be described as follows: decode the original image of the light field to obtain 4D light field data, use the digital refocusing algorithm to obtain multiple refocused images focused at different scene depths, and use the angle information of the light field to calculate multiple The initia...

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Abstract

The invention belongs to the field of light field full-focus image fusion. According to a traditional image fusion algorithm based on guided filtering, only spatial information of an image is utilized; the method is applied to light field full-focus image fusion. The reasonable utilization of the angle information can effectively improve the image fusion precision; based on this, the invention provides a light field camera full-focus image fusion algorithm of spatial information guide angle information. According to the algorithm, a preliminary fusion weight graph is obtained based on angle information of a 4D light field; the preliminary fusion weight graph is taken as a guided image; spatial information obtained by coordinate transformation and integration of the 4D light field is used as a guide image to complete guide filtering; experiments demonstrate the effectiveness of the algorithm provided by the invention: a quantitative evaluation result shows that on the premise of not sacrificing image information richness and perception definition, a fused image obtained by the algorithm provided by the invention is higher in quality under performance evaluation indexes based on features and structural similarity.

Description

technical field [0001] The invention belongs to the field of light field full focus image fusion, in particular to a light field camera full focus image fusion algorithm in which spatial information guides angle information. Background technique [0002] Due to the adoption of a new camera imaging system model, the light field camera has gained widespread attention from researchers in related fields at home and abroad by virtue of its technical highlights of taking pictures first and then focusing. Compared with traditional cameras, light field cameras can not only record spatial light position information, but also record light angle information, making light field images more advantageous in post-processing and application. At present, the research content of light field camera mainly includes camera calibration, light field digital refocusing, multi-viewpoint image acquisition, multi-focus and omni-focus image fusion, depth estimation and super-resolution reconstruction, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/50
CPCG06T5/50G06T2207/10052G06T2207/20048G06T2207/20221G06T2207/20192
Inventor 武迎春李素月张彧凤梁杰王安红
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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