自适应自动白平衡算法的改进与实现  

Improvement and Implementation of the Adaptive and Automatic White Balance Algorithm

作　　者：田立坤[1,2] 刘晓宏[2] 李洁[2] 郭晓光[2] 

机构地区：[1]光电控制技术重点实验室,河南洛阳471009 [2]中国航空工业集团公司洛阳电光设名研究所,河南洛阳471009

出　　处：《电光与控制》2013年第12期37-41,共5页Electronics Optics & Control

基　　金：航空科学基金(20105113002)

摘　　要：为了实现高分辨率图像采集系统图像色彩的实时校正,提出一种改进的自适应自动白平衡算法。该算法在YCbCr颜色空间进行色温估计,通过加入循环调节环节不断提高通道增益计算的精度,与其他几种典型白平衡算法相比,获得更优的颜色校正效果。根据FPGA实现特点进行硬件实现优化设计。实验结果表明:该算法图像处理速度快且占用硬件资源少,满足高分辨率图像采集系统的实时性要求。In order to correct the unrealistic color of the images captured by the high-resolution image acquisition system in real time, an improved adaptive and automatic white balance algorithm was proposed. The color temperature estimation in the YCbCr color space was completed by this algorithm, and a regulation module was added to improve the calculation precision of channel gain continuously. Compared with some other automatic white balance algorithms, it could obtain better color correction performance. The circuit design was optimized according to the characteristic of FPGA. The experiment results show that the algorithm consumes less hardware resources, is fast in image processing and can meet the real-time requirement of high-resolution image acquisition system.

关 键 词：图像处理 色彩校正 白平衡 FPGA 色温 

分 类 号：V271.4[航空宇航科学与技术—飞行器设计] TP319[自动化与计算机技术—计算机软件与理论]