pyvips_image_crop_convolution_sharpen_and_save.py

python

Loads an image, crops it, applies a convolution mask, and saves the result to a f

15d ago15 lines

libvips.org

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pyvips_image_crop_convolution_sharpen_and_save.py
import pyvips

# Load an image from a file
image = pyvips.Image.new_from_file('input.jpg', access='sequential')

# Multiply the red, green, and blue channels by different constants
# and sharpen the result
mask = pyvips.Image.new_from_array([[-1, -1, -1],
                                    [-1, 16, -1],
                                    [-1, -1, -1]], scale=8)
image = image.extract_area(100, 100, image.width - 200, image.height - 200)
image = image.conv(mask, precision='integer')

# Write the result back to a file
image.write_to_file('output.jpg')