发布于 2015-09-11 16:13:32 | 261 次阅读 | 评论: 0 | 来源: 网络整理
The ImageColor module contains color tables and converters from
CSS3-style color specifiers to RGB tuples. This module is used by
PIL.Image.Image.new() and the ImageDraw module, among
others.
Color Names
The ImageColor module supports the following string formats:
- Hexadecimal color specifiers, given as #rgb or #rrggbb. For example,
#ff0000 specifies pure red.
- RGB functions, given as rgb(red, green, blue) where the color values are
integers in the range 0 to 255. Alternatively, the color values can be given
as three percentages (0% to 100%). For example, rgb(255,0,0) and
rgb(100%,0%,0%) both specify pure red.
- Hue-Saturation-Lightness (HSL) functions, given as hsl(hue, saturation%,
lightness%) where hue is the color given as an angle between 0 and 360
(red=0, green=120, blue=240), saturation is a value between 0% and 100%
(gray=0%, full color=100%), and lightness is a value between 0% and 100%
(black=0%, normal=50%, white=100%). For example, hsl(0,100%,50%) is pure
red.
- Common HTML color names. The ImageColor module provides some
140 standard color names, based on the colors supported by the X Window
system and most web browsers. color names are case insensitive. For example,
red and Red both specify pure red.
Functions
-
PIL.ImageColor.getrgb(color)[source]
- Convert a color string to an RGB tuple. If the string cannot be parsed,
- this function raises a ValueError exception.
1.1.4 新版功能.
| 参数: | color – A color string |
|---|
| 返回: | (red, green, blue[, alpha]) |
|---|
-
PIL.ImageColor.getcolor(color, mode)[source]
Same as getrgb(), but converts the RGB value to a
greyscale value if the mode is not color or a palette image. If the string
cannot be parsed, this function raises a ValueError exception.
1.1.4 新版功能.
| 参数: | color – A color string |
|---|
| 返回: | (graylevel [, alpha]) or (red, green, blue[, alpha]) |
|---|