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    • 8. 发明申请
    • Compositing images from multiple sources
    • 从多个来源组合图像
    • US20050146538A1
    • 2005-07-07
    • US11073826
    • 2005-03-07
    • Donald GrayJohn Tardif
    • Donald GrayJohn Tardif
    • G06F3/14G06K9/36G06K9/46G09G5/14H04N1/40H04N9/74
    • G09G5/14G06F3/14G09G2340/10G09G2340/125G09G2370/04
    • Systems and methods for compositing an image directly from multiple source image data for reducing system memory footprint and bandwidth and for improving color quality of the image. The image is divided into spans, lines, and slices. Each line includes at least one span and each slice includes at least one line. All lines in a slice have spans associated with identical sources. An image is composited by reading the image data directly from one or more sources of each span. If necessary, the sources are blended. A control structure is used to provide the image context and identifies the sources of the spans. The control structure includes headers for each data stream from each source of each span. Also, the color quality of the image is improved by reducing the number of color space conversions that occur as the image is composited. All sources in the same color space are blended, before being blended with sources from other color spaces. Preferably, no more than a single color conversion is required.
    • 用于从多个源图像数据直接合成图像的系统和方法,以减少系统内存占用和带宽,并提高图像的色彩质量。 图像分为跨度,线和切片。 每行包括至少一个跨度,每个切片包括至少一个直线。 切片中的所有行都具有与相同源相关联的跨度。 通过直接从每个跨度的一个或多个来源读取图像数据来合成图像。 如果需要,混合来源。 控制结构用于提供图像上下文并识别跨度的来源。 控制结构包括来自每个跨度的每个源的每个数据流的头部。 此外,通过减少图像合成时发生的色彩空间转换次数,可以提高图像的色彩质量。 在与其他颜色空间的源混合之前,将相同颜色空间中的所有来源混合。 优选地,不需要单独的颜色转换。