一种采用残差校正的颜色校正方法

By introducing residual correction and Gamma correction on the basis of the color correction matrix, the problem of insufficient accuracy of specific colors in the imaging system is solved, and the accurate reproduction of pathological colors and image display adaptation are achieved in high-requirement scenarios such as endoscopy.

CN120302169BActive Publication Date: 2026-07-17BEIJING JIANWEI ZHISHI TECHNOLOGY CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING JIANWEI ZHISHI TECHNOLOGY CO LTD
Filing Date
2025-04-15
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing imaging systems suffer from insufficient accuracy in specific color correction, especially in demanding scenarios such as endoscopy, where accurate reproduction of pathological colors is difficult.

Method used

Based on the color correction matrix, residual correction is introduced. By constructing a residual space and performing three-dimensional Gaussian filtering and downsampling, a residual correction table is generated to further correct color values. Combined with Gamma correction, the brightness response curve is adjusted to adapt to display devices.

Benefits of technology

It improves the conversion accuracy of specific colors, reduces the reproduction error of pathological colors, enhances diagnostic reliability, and adapts to the brightness characteristics of different display devices, ensuring the accuracy of image display and the preservation of details.

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Abstract

本发明公开了一种采用残差校正的颜色校正方法,包括以下步骤:S1、输入图像:将相机拍摄的图像输入到处理设备中;S2、颜色校正矩阵:将输入图像的RGB颜色空间转换为标准颜色空间,如sRGB、DCI‑P3;S3、残差校正:基于预设的特定颜色样本集,计算经过颜色校正矩阵校正后的颜色值与对应标准颜色值的残差,构建残差空间,对残差空间进行三维高斯滤波和降采样处理,根据残差校正表对经过颜色校正矩阵校正后的颜色值残差校正;S4、Gamma校正:将线性颜色空间的RGB值转换为非线性显示值。本方法更加适合特殊场合(内窥镜的成像)颜色校正,在颜色校正矩阵(CCM)的基础上增加了残差校正(RC)环节,既可以提升特定颜色的转换精度,又能保证整体精度。
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