Wand solarize() function in Python

Solarize Effect is the effect of tone reversal observed in cases of extreme overexposure of the photographic film in the camera. Most likely, the effect was first observed in scenery photographs including the sun (e.q. sol, sun). The sun, instead of being the whitest spot in the image, turned black or grey. solarize() function creates a “burned” effect on the image by replacing pixel values above a defined threshold with a negated value.

Syntax :

wand.image.solarize(amount, method)

Parameters :

Parameter	Input Type	Description
threshold	numbers.Real	between 0.0 and quantum_range./td>
channel	basestring	Optional color channel to target. See CHANNELS

Source Image:

Example 1:

# Import Image from wand.image module
from wand.image import Image

# Read image using Image function
with Image(filename ="koala.jpeg") as img:

    # solarized image using solarize() function
    img.solarize(threshold = 0.5 * img.quantum_range)
    img.save(filename ="solpkoala.jpeg")

Output :

Example 2:
Decreasing threshold value.

# Import Image from wand.image module
from wand.image import Image

# Read image using Image function
with Image(filename ="koala.jpeg") as img:

    # solarized image using solarize() function
    img.solarize(threshold = 0.25 * img.quantum_range)
    img.save(filename ="impkoala2.jpeg")

Output: