Title:
POINT-BY-POINT CORRECTION AND RESTORATION METHOD AND SYSTEM FOR LARGE FIELD-OF-VIEW DEGRADED IMAGE HAVING AERO-OPTICAL EFFECT
Document Type and Number:
WIPO Patent Application WO/2023/115801
Kind Code:
A1
Abstract:
Disclosed in the present invention is a point-by-point correction and restoration method for a large field-of-view degraded image having an aero-optical effect. The method comprises: calculating the gradient of an input degraded image, selecting a plurality of large gradient areas, and calculating a blur kernel of each local area; calculating the distances to center points of two nearest local areas point by point, and performing inverse distance weighted interpolation calculation on a blur kernel of each point in the whole image according to the two distances of each pixel point to obtain initial values of the blur kernels of the points in the whole image to form an initial blur kernel matrix; establishing a space-variant degradation model according to the initial blur kernel matrix, and adding a non-negativity constraint regularization item and an adaptive anisotropy variable coefficient-based sparsity constraint regularization item, so that a target image and the blur kernel of each point have non-negativity and spatial adaptability; and solving the space-variant degradation model to obtain the blur kernel of each point and the grayscale value of each point to realize point-by-point correction, and finally outputting a space-variant degradation restored image. According to the present invention, a large field-of-view space-variant degraded image having an aero-optical effect can be corrected and restored.
Inventors:
HONG HANYU (CN)
ZUO ZHICHAO (CN)
ZHANG TIANXU (CN)
SHI YU (CN)
ZHANG YAOZONG (CN)
WU JINMENG (CN)
LI QIONG (CN)
ZUO ZHICHAO (CN)
ZHANG TIANXU (CN)
SHI YU (CN)
ZHANG YAOZONG (CN)
WU JINMENG (CN)
LI QIONG (CN)
Application Number:
PCT/CN2022/093807
Publication Date:
June 29, 2023
Filing Date:
May 19, 2022
Export Citation:
Assignee:
WUHAN INST TECHNOLOGY (CN)
International Classes:
G06T5/00
Foreign References:
| CN113962908A | 2022-01-21 | |||
| CN113793284A | 2021-12-14 | |||
| CN109919871A | 2019-06-21 | |||
| US20160301922A1 | 2016-10-13 |
Attorney, Agent or Firm:
WUHAN HUAZHIYU INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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