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    • 7. 发明授权
    • System and method for approximating pixel color utilizing an optimized octree
    • 使用优化八叉树近似像素颜色的系统和方法
    • US07177464B2
    • 2007-02-13
    • US10464155
    • 2003-06-17
    • Stephen P. ProteauJingyang Xu
    • Stephen P. ProteauJingyang Xu
    • G06K9/00G06F13/00
    • G06T11/001
    • A method for approximating pixel colors in a display utilizing anoptimized color palette is provided. A color octree of a target display is generated by mapping the RGB color information from each pixel into the color octree. Each is generated such that each node of the octree tracks pixel count and color information. If the number of leaf nodes exceeds the target number of colors for the color palette, the octree is pruned by a recursive algorithm that compares a merging threshold to the number of pixels represented by each node and the number of unique colors represented by the node with a unique color lock threshold. The merging threshold and the unique color lock threshold are adjusted until the number of leaf nodes is less than the target number of colors in the color palette. Each pixel in the original display can be mapped to the color palette to reproduce the display.
    • 提供了一种使用优化调色板近似显示中的像素颜色的方法。 通过将来自每个像素的RGB颜色信息映射到颜色八叉树中来生成目标显示的颜色八叉树。 每个都产生,使得八叉树的每个节点跟踪像素数和颜色信息。 如果叶子节点的数量超过了调色板的目标颜色数,则八叉树被递归算法修剪,该递归算法将合并阈值与由每个节点表示的像素数目和由该节点代表的唯一颜色的数量进行比较 独特的色锁阈值。 调整合并阈值和独特颜色锁定阈值,直到叶节点数量少于调色板中目标颜色数量为止。 原始显示中的每个像素可以映射到调色板以再现显示。