Overview:
- Pillow - The Python Image-processing Library provides various image filters including the edge detection filters and edge enhancement filters.
- Like the other image filter implementations provided by Pillow, edge detection filter as well is implemented using a convolution of a specific kernel onto the image.
- The convolution matrix used by pillow for the edge detection is given by:
(
-1, -1, -1,
-1, 8, -1,
-1, -1, -1
)
Example:
|
from PIL import Image from PIL import ImageFilter
# Create an image object image = Image.open("./goat.jpg")
# Find the edges by applying the filter ImageFilter.FIND_EDGES imageWithEdges = image.filter(ImageFilter.FIND_EDGES)
# display the original show image.show()
# display the new image with edge detection done imageWithEdges.show() |
Output:
