Wand function() function in Python
function() function is similar to evaluate function. In function() function pixel channels can be manipulated by applis a multi-argument function to pixel channels.
Following are the list of FUNCTION_TYPES in Wand:
- ‘undefined’
- ‘arcsin’
- ‘arctan’
- ‘polynomial’
- ‘sinusoid’
Syntax :
wand.image.function(function, arguments, channel)Parameters :
Parameter Input Type Description function collections.abc.Sequence a sequence of doubles to apply against function arguments numbers.Real Number to calculate with operator channel basestring Optional channel to apply operation on.
Example 1:
Source Image:
# Import Image from wand.image module from wand.image import Image frequency = 3phase_shift = -90amplitude = 0.2bias = 0.7 # Read image using Image function with Image(filename ="koala.jpeg") as img: # appying sinusoid FUCTION_TYPE img.function('sinusoid', [frequency, phase_shift, amplitude, bias]) img.save(filename ="kl-functioned.jpeg") |
chevron_right
filter_none
Output :
Example 2:
Sorce Image:
# Import Image from wand.image module from wand.image import Image frequency = 3phase_shift = -90amplitude = 0.2bias = 0.7 # Read image using Image function with Image(filename ="road.jpeg") as img: # appying sinusoid FUCTION_TYPE img.function('polynomial', [frequency, phase_shift, amplitude, bias]) img.save(filename ="rd-functioned.jpeg") |
chevron_right
filter_none
Output :
Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.
To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course.
Article Contributed By :
Article Tags :
