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討論:高彩色

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未翻譯內容[編輯]

未翻譯內容如下:--Flame 歡迎泡茶 2011年8月16日 (二) 00:20 (UTC)[回覆]

15-bit high color[編輯]

In 15 bit high color, one of the bits of the two bytes is ignored or set aside for an alpha channel, and the remaining 15 bits are split between the red, green, and blue components of the final color, like this:

Sample layout of a 15 bit color data in a 16 bit pixel (in RGBAX notation)

Sample layout of a 15 bit color data in a 16 bit pixel
Sample layout of a 15 bit color data in a 16 bit pixel


Sample layout of a 15 bit color data and Alpha channel in a 16 bit pixel (in RGBAX notation)

Sample layout of a 15 bit color data in a 16 bit pixel
Sample layout of a 15 bit color data in a 16 bit pixel


16-bit high color[編輯]

Human eyes are more sensitive to green light. Discontinuities in the green gradient are easier to see than the reds, and the blues are almost impossible to see.

When all 16 bits are used, one of the components (usually green, see below) gets an extra bit, allowing 64 levels of intensity for that component, and a total of 65,536 available colors.

Sample layout of real 16 bit color data in a 16 bit pixel (in RGBAX notation)

Sample layout of a 15 bit color data in a 16 bit pixel
Sample layout of a 15 bit color data in a 16 bit pixel