基于FPGA的图像白平衡改进与实现  

Research and Implementation of Image White Balance Based on FPGA

作　　者：王凌远 甄国涌[1] 储成群[1] WANG Lingyuan;ZHEN Guoyong;CHU Chengqun(National Key Laboratory for Electronic Measurement Technology,North University of China,Taiyuan 030051)

机构地区：[1]中北大学电子测试技术国家重点实验室,太原030051

出　　处：《舰船电子工程》2024年第8期118-120,164,共4页Ship Electronic Engineering

基　　金：国家自然科学基金项目(编号:62131018)资助。

摘　　要：在不同色温的光源下,图像传感器接收到的颜色与实际有偏差,需要进行偏色校正。为了解决现有白平衡算法的缺点,论文提出一种改进的自动白平衡算法。算法将3个RGB通道的图像传输到YCrCb颜色空间,计算图像的增益系数并做色彩校正。算法以FPGA为硬件开发平台,采用并行设计,降低了资源消耗,便于硬件开发。分析测试结果可知,相较于经典算法,该算法提高了彩色图像的白平衡效果,应用前景良好。Under light sources with different color temperatures,the color received by the image sensor deviates from the actual color,and color cast correction needs to be performed.In order to solve the shortcomings of existing white balance algorithms,this article proposes an improved automatic white balance algorithm.The algorithm transmits the 3 RGB channel images to the YCrCb color space,calculates the gain coefficient of the image and performs color correction.The algorithm uses FPGA as the hardware de⁃velopment platform and adopts parallel design,which reduces resource consumption and facilitates hardware development.Analysis of the test results shows that compared with the classic algorithm,this algorithm improves the white balance effect of color images and has good application prospects.

关 键 词：白平衡算法 偏色校正 FPGA 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]