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公开(公告)号:US20140029846A1
公开(公告)日:2014-01-30
申请号:US13664359
申请日:2012-10-30
Applicant: APPLE INC.
Inventor: Yeping SU , Jiefu ZHAI , James Oliver NORMILE , Hsi-Jung WU , Hao PAN
IPC: G09G5/02
CPC classification number: G09G3/2048 , G09G3/2066 , G09G2340/06 , G09G2350/00
Abstract: YCbCr image data may be dithered and converted into RGB data shown on a 8-bit or other bit display. Dither methods and image processors are provided which generate the banding artifact free image data during this process. Some methods and image processors may applying a stronger dither having a same mean with a larger variance to the image data before it is converted to RGB data. Others methods and image processors may calculate a quantization or encoding error and diffuse the calculated error among one or more neighboring pixel blocks.
Abstract translation: YCbCr图像数据可以抖动并转换成8位或其他位显示器上显示的RGB数据。 提供抖动方法和图像处理器,其在该处理期间产生无带纹带图像数据。 一些方法和图像处理器可以在将图像数据转换成RGB数据之前,对图像数据应用具有相同平均值的较强抖动。 其他方法和图像处理器可以计算量化或编码误差并且在一个或多个相邻像素块之间扩展所计算的误差。