colorsys
--- 颜色系统间的转换¶
源代码: Lib/colorsys.py
The colorsys
module defines bidirectional conversions of color values
between colors expressed in the RGB (Red Green Blue) color space used in
computer monitors and three other coordinate systems: YIQ, HLS (Hue Lightness
Saturation) and HSV (Hue Saturation Value). Coordinates in all of these color
spaces are floating-point values. In the YIQ space, the Y coordinate is between
0 and 1, but the I and Q coordinates can be positive or negative. In all other
spaces, the coordinates are all between 0 and 1.
参见
有关色彩空间的更多信息可访问 https://poynton.ca/ColorFAQ.html 和 https://www.cambridgeincolour.com/tutorials/color-spaces.htm。
colorsys
模块定义了如下函数:
- colorsys.rgb_to_yiq(r, g, b)¶
把颜色从RGB值转为YIQ值。
- colorsys.yiq_to_rgb(y, i, q)¶
把颜色从YIQ值转为RGB值。
- colorsys.rgb_to_hls(r, g, b)¶
把颜色从RGB值转为HLS值。
- colorsys.hls_to_rgb(h, l, s)¶
把颜色从HLS值转为RGB值。
- colorsys.rgb_to_hsv(r, g, b)¶
把颜色从RGB值转为HSV值。
- colorsys.hsv_to_rgb(h, s, v)¶
把颜色从HSV值转为RGB值。
示例:
>>> import colorsys
>>> colorsys.rgb_to_hsv(0.2, 0.4, 0.4)
(0.5, 0.5, 0.4)
>>> colorsys.hsv_to_rgb(0.5, 0.5, 0.4)
(0.2, 0.4, 0.4)