基于帧间一致光源颜色估计的视频白平衡方法  

Video white balance based on inter-frame consistent illumination color estimation

作　　者：孙心桐 张磊[1] SUN Xintong;ZHANG Lei(School of Computer Science and Technology,Beijing Institute of Technology,Beijing 100081)

机构地区：[1]北京理工大学计算机学院,北京100081

出　　处：《中国科技论文》2022年第11期1254-1259,共6页China Sciencepaper

基　　金：国家自然科学基金资助项目(62132012)。

摘　　要：针对视频白平衡中产生的画面颜色不稳定问题,提出了基于帧间一致光源颜色估计的视频白平衡方法。首先利用同一消色差物体表面颜色不变的性质,检测视频帧图像中反映光源颜色的灰点,获得单帧图像光源颜色估计。然后对相邻帧光源颜色估计结果进行自适应融合,得到帧间一致的光源颜色估计结果,并进行白平衡处理。通过帧间光源颜色的一致性,达到了画面颜色稳定的视频白平衡效果。实验结果表明,所提方法在保持了视频白平衡结果基本正确的同时,有效提高了视频白平衡结果的颜色稳定性。To address the problem of color instability in video white balance,a new method of video white balance based on the consistent color estimation of light source between frames was proposed.Based on the property that the color of pixels at the surface of the same achromatic object was invariant,the gray pixels which reflected the illumination color in video frames were detected,and a single-frame illumination color estimation was obtained.Then,the inter-frame consistent illumination color estimation result was obtained by fusing the illumination color estimation results of adjacent frames,and the white balance processing was performed.By the inter-frame consistency of illumination color,a color-stabilized video white balance result was achieved.Experimental results show that the proposed method efficiently improves the color stability of the video white balance while maintaining the results basically correct.

关 键 词：彩色图像处理 视频白平衡 颜色恒常性 颜色稳定 灰点检测 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]