color-mapped 颜色表
Such objects are called icons or glyphs ([3,4]) and have attributes, such as position, size, shape, color, and orientation, to which data is mapped.
这样的对象成为图标或者字形（[3，4]），并且拥有诸如位置、尺寸、形状、颜色和方向等属性，数据被映射在这些属性中。
Each pixel in the image is mapped to a particular color in the table, or palette.
影像中的每个像素都对应到资料表或调色盘中的特定色彩。
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