公开(公告)号：US08149292B2

公开(公告)日：2012-04-03

申请号：US12137467

申请日：2008-06-11

Applicant: Weihua Xiong ,  Jingtao Kuang

Inventor： Weihua Xiong ,  Jingtao Kuang

IPC: H04N9/73

CPC classification number: H04N9/735

Abstract: The specification disclosed embodiments of an apparatus comprising an automatic white balance (AWB) circuit coupled to a pixel array to transform red, green, and blue color data obtained from each pixel into x and y chromaticity values for each pixel, determine a distance between the Planckian locus and the x and y chromaticity values for each pixel, determine a weight for each pixel based on the distance between its x and y chromaticity values and the Planckian locus, determine red, green, and blue adjustments for each pixel using its weight, and apply a white balance adjustment to the red, green and blue values obtained from each pixel. Other embodiments are also disclosed and claimed.

Abstract translation: 说明书公开了一种装置的实施例，其包括耦合到像素阵列的自动白平衡（AWB）电路，以将从每个像素获得的红，绿和蓝色数据转换为每个像素的x和y色度值，确定 普朗克轨迹和每个像素的x和y色度值根据其x和y色度值与普朗克轨迹之间的距离确定每个像素的权重，使用其重量确定每个像素的红，绿和蓝调整， 并对从每个像素获得的红色，绿色和蓝色值应用白平衡调整。 还公开并要求保护其他实施例。