一种自动曝光方法及内窥镜图像处理装置
By generating an automatic exposure index table and adjusting the brightness of the image sensor and multiple light sources, the problem of abnormal exposure of endoscopes in complex scenarios was solved, achieving high-quality automatic exposure control and improving surgical efficiency and image clarity.
CN116055892BActive Publication Date: 2026-07-17HUNAN WEIDEKANG MEDICAL TECH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUNAN WEIDEKANG MEDICAL TECH CO LTD
- Filing Date
- 2023-01-10
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing endoscopes are prone to local overexposure or underexposure in complex scenarios, affecting surgical efficiency and quality.
Method used
By combining the exposure parameters of the image sensor and the brightness parameters of multiple light sources, an automatic exposure index table is generated. Local and overall exposure adjustments are made based on the grayscale difference of the image, and supplementary lighting is provided using independent light sources or ring light sources to achieve automatic exposure control.
Benefits of technology
It effectively reduces overexposure and underexposure, improves image quality, prevents image flicker, and ensures image clarity and visibility during surgery.
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Smart Images
Figure CN116055892B_ABST
Abstract
本发明涉及一种自动曝光方法及内窥镜图像处理装置，包括生成自动曝光索引表，在索引表中移动预设的步长实现固定比例的图像灰度调整；自动曝光时，等间距选取一定比例的像素点，得到抽样统计数据；计算子区域平均灰度和整体平均灰度；根据子区域的过曝率、所处的空间位置与目标灰度的差值，修正子区域的平均灰度和整体平均灰度；差异均小于阈值，则执行步骤八，否则执行步骤六；调整整体平均灰度步长和子区域平均灰度步长；根据曝光索引表及上一帧的曝光参数，结合整体平均灰度步长和子区域平均灰度步长，计算新的光源亮度和图像传感器的曝光参数；下发曝光参数。本发明解决自动曝光技术在医用内窥镜中容易出现的过曝问题。
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