Image.colororder2dict#

static Image.colororder2dict(colororder, start: int = 0) → dict[str, int][source][source]#

Parse a color order specification to a color dictionary

Parameters:

  • colororder (str, dict) – order of color channels

  • start (int, optional) – starting index for plane numbering, defaults to 0

Raises:

ValueError – colororder not a string or dict

Returns:

dictionary mapping color names to plane indices

Return type:

dict

The color order the value can be given in a variety of forms:

AUTO_EDIT

  • simple string, one plane per character, eg. "RGB"

  • colon separated string, eg. "R:G:B", "L*:a*:b*"

  • dictionary, eg. dict(R=0, G=1, B=2)

Example:

>>> from machinevisiontoolbox import Image
>>> Image.colororder2dict('RGB')
{'R': 0, 'G': 1, 'B': 2}
>>> Image.colororder2dict('red:green:blue')
{'red': 0, 'green': 1, 'blue': 2}
>>> Image.colororder2dict({'L*': 0, 'U*': 1, 'V*': 2})
{'L*': 0, 'U*': 1, 'V*': 2}