首页> 外国专利> Alleviating Dominant Color Failure in Automatic White Balance Using Histogram Trimming

Alleviating Dominant Color Failure in Automatic White Balance Using Histogram Trimming

机译:使用直方图修整减轻自动白平衡中的主色故障

摘要

Methods, devices and computer readable media for implementing novel dominant color alleviation techniques for color balancing are described. The techniques take advantage of unique properties of 2D image data histograms accumulated in a chromaticity space, along with other factors such as estimated scene lux and knowledge of plausible scene illuminant white point values within the chromaticity space. The accumulated 2D image data histograms may be refined and “trimmed,” such that the resultant image data passed to an auto white balance solution has much less influence from the dominant colors in the image, even those that overlap the plausible scene illuminant color region. The described techniques provide for white point estimates that are much less prone to dominant color failures.
机译:描述了用于实现用于色彩平衡的新颖的主要色彩缓解技术的方法,设备和计算机可读介质。这些技术利用了在色度空间中累积的2D图像数据直方图的独特属性,以及其他因素,例如估计的场景照度和色度空间内合理的场景光源白点值的知识。可以对累积的2D图像数据直方图进行细化和“修剪”,以使传递到自动白平衡解决方案的所得图像数据对图像中的主色(甚至与可能的场景光源颜色区域重叠的主色)的影响要小得多。所描述的技术提供了白点估计,该白点估计不太容易发生显性色彩故障。

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