Improved CLAHE short-wave infrared image real-time enhancement method based on FPGA
By using an improved CLAHE algorithm based on FPGA, the problem of insufficient image contrast of shortwave infrared detectors in complex environments is solved, achieving efficient and real-time image enhancement, improving image quality and processing speed, and making it suitable for miniaturized devices.
CN122265116APending Publication Date: 2026-06-23NANJING UNIV OF SCI & TECH
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Patent Information
- Application Number
- CN202610303515.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-03-13
- Publication Date
- 2026-06-23
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Figure CN122265116A_ABST
Abstract
The application provides an improved CLAHE short-wave infrared image real-time enhancement method based on FPGA. In view of the problems of low contrast, unobvious detail information and easy amplification of noise of InGaAs short-wave infrared imaging under low illumination, an improved limited contrast adaptive histogram equalization image enhancement algorithm is provided, and the optimal clipping threshold is automatically determined through an adaptive search mechanism, so that the local contrast is enhanced and the noise amplification is inhibited. The application can effectively improve the contrast and detail distinguishability of the short-wave infrared image, reduce the influence of noise, and is suitable for fields of short-wave infrared imaging systems, target identification systems and weak light vision systems.
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