上海交通大学 微电子学院,上海,200240
纸质出版:2018
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魏超, 贺光辉. 基于直方图的白平衡算法的研究[J]. 微电子学与计算机, 2018, 35(6): 75-78.
WEI Chao, HE Guang-hui. Automatic White Balance Algorithm Based on Histogram[J]. 2018, 35(6): 75-78.
针对常见基于直方图的白平衡算法对于RGB各通道直方图相似度低时失效的问题
提出了一种基于直方图匹配改进的自动白平衡算法.利用RGB通道直方图的相似度对基于直方图匹配的白平衡算法增加有效性判断
对于直方图相似度低的图片采用直方图平移算法处理.结合直方图匹配与直方图平移的特点
弥补单个算法的不足.通多对大量图片测试表明
该算法对图像偏色有较好的矫正效果
且适用范围提高了11%.
The common automatic white balance algorithm based on histogram is failure when there are great different between there color histograms. An automatic white balance based on histogram matching is applied. The histogram matching is used when three channels have high similarity in histogram. While the histogram similarity is low
histogram translation method is used to correct images respectively. The combination of histogram matching and histogram translation algorithm makes up for the deficiency of the two algorithms effectively. Experimental results show that
on a large number of natural images set
the method has better color balance effect and the applicable range of the algorithm is increased by 11%.
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