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公开(公告)号：US09041980B2
公开(公告)日：2015-05-26
申请号：US13745850
申请日：2013-01-20
Applicant: QUALCOMM Incorporated
Inventor： Huanzhao Zeng , Chong U. Lee , John H. Hong
Abstract: Subdividing a color space is described for vector error diffusion which includes obtaining color coordinates for each primary color in the color space, and comparing the color coordinates to a threshold value for each coordinate plane of the color space. In response to the comparing, each primary color is grouped into a quadrant of the color space, wherein each quadrant is defined by the threshold value for each coordinate plane. In other aspects, a mapping a color to a closet primary color is described in a color space that includes a display determining color coordinates of the color and identifying a matching quadrant of a plurality of quadrants dividing the color space, wherein the determined color coordinates fall within the matching quadrant. A representative display device searches for the closest primary color within the matching quadrant and maps the color to the closest primary color found.
Abstract translation: 针对向量误差扩散描述了细分颜色空间，其包括获得颜色空间中的每个基色的颜色坐标，以及将颜色坐标与颜色空间的每个坐标平面的阈值进行比较。 响应于比较，每个基色被分组成颜色空间的象限，其中每个象限由每个坐标平面的阈值定义。 在其他方面，在颜色空间中描述了将颜色映射到衣柜原色的颜色空间，其包括确定颜色的颜色坐标的显示器，并且识别划分颜色空间的多个象限的匹配象限，其中确定的颜色坐标下降 在匹配象限内。 代表性的显示设备搜索匹配象限内的最接近的原色，并将颜色映射到找到的最接近的原色。
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公开(公告)号：US09129547B2
公开(公告)日：2015-09-08
申请号：US13827890
申请日：2013-03-14
Applicant: QUALCOMM Incorporated
Inventor： Huanzhao Zeng
CPC classification number: G09G5/02 , G09G3/2003 , G09G3/2066 , G09G3/346 , G09G3/3466 , G09G2340/0428 , G09G2340/06
Abstract: A method for color reproduction in a display device includes receiving spectral color input to be displayed on the display device. The method additionally includes selecting a primary from a plurality of available primaries that is a closest match of a spectral reflectance of the spectral color input, wherein each of the plurality of available primaries is assigned an association with an associated spectral reflectance. The method also includes displaying the selected primary in a temporal frame of a set of temporal frames for a pixel and passing remaining spectral errors to a next temporal frame of the set of temporal frames. The method further includes passing remaining spectral errors to neighbor pixels for spatial error diffusion at each spectral band after all temporal frames of the set of temporal frames are used.
Abstract translation: 一种显示装置中的色彩还原方法，包括：接收待显示在显示装置上的光谱颜色输入。 该方法还包括从多个可用原色中选择一个主要光谱，其是光谱颜色输入的光谱反射率的最接近匹配，其中多个可用原色中的每一个被分配与相关联的光谱反射率的关联。 该方法还包括在用于像素的一组时间帧的时间帧中显示所选择的主要，并将剩余的频谱误差传递到该组时间帧的下一个时间帧。 所述方法还包括在使用所述一组时间帧的所有时间帧之后，将剩余光谱误差传递到相邻像素以用于每个光谱带上的空间误差扩散。
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公开(公告)号：US09105226B2
公开(公告)日：2015-08-11
申请号：US13745840
申请日：2013-01-20
Applicant: QUALCOMM Incorporated
Inventor： Huanzhao Zeng , Jian J. Ma
CPC classification number: G09G3/2003 , G09G3/2066 , G09G3/3466 , H04N1/4052 , H04N19/86
Abstract: A method for reducing bit-depth of image data for an imaging device includes receiving an image frame for display to the imaging device. The method additionally includes applying temporal error diffusion for the image frame to produce a plurality of image subframes, wherein temporal errors generated in one subframe of the image frame are passed to a next subframe of the image frame for temporal error diffusion. The method also includes applying spatial error diffusion to remaining temporal errors from the temporal error diffusion of the image frame.
Abstract translation: 用于降低成像装置的图像数据的位深度的方法包括：接收用于显示的成像装置的图像帧。 该方法还包括对图像帧应用时间误差扩散以产生多个图像子帧，其中在图像帧的一个子帧中产生的时间误差被传递到用于时间误差扩散的图像帧的下一个子帧。 该方法还包括将空间误差扩散应用于来自图像帧的时间误差扩散的剩余时间误差。
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