一种基于局部背景光的水下非均匀光图像增强方法和系统
By constructing an underwater non-uniform light image enhancement method with local background light, the problem of unsatisfactory image processing effect in the existing technology under the scene of changing illumination is solved, and high-quality enhancement of underwater images is achieved, which is applicable to complex illumination conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUAZHONG UNIV OF SCI & TECH
- Filing Date
- 2024-03-07
- Publication Date
- 2026-07-17
AI Technical Summary
Existing underwater image enhancement methods do not perform well in handling complex lighting scenarios with both ambient and artificial light, especially when the lighting parameters are not accurately estimated, which makes it difficult to guarantee image quality.
An underwater non-uniform light image enhancement method based on local background light is adopted. Through preprocessing, weighted fusion of brightness, gradient and saturation maps, a weight score map is constructed, local artificial light and global ambient light are searched, and the depth map is optimized and converted into a transmittance map by combining the Lambert-Beer law, and finally the enhanced image is retrieved.
It effectively improves the quality of underwater non-uniform lighting images, is suitable for scenes with complex lighting conditions, maintains image boundaries and detail information, and enhances image clarity and contrast.
Smart Images
Figure CN118212167B_ABST