Perspective
In this exercise, you will detect the corners of a building using the Harris corner detector. The threshold_rel parameter will specify the minimum intensity of peaks.
building_image.The functions show_image() and show_image_with_corners() have already been preloaded for you. As well as the color module for converting images to grayscale.
This exercise is part of the course
Image Processing in Python
Exercise instructions
- Import the
corner_harris()function from the feature module. - Convert the
building_imageto grayscale. - Apply the harris detector to obtain the measure response image with the possible corners.
- Find the peaks of the corners.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Import the corner detector related functions and module
from skimage.____ import ____, corner_peaks
# Convert image from RGB-3 to grayscale
building_image_gray = ____
# Apply the detector to measure the possible corners
measure_image = ____
# Find the peaks of the corners using the Harris detector
coords = ____(____, min_distance=20, threshold_rel=0.02)
# Show original and resulting image with corners detected
show_image(building_image, "Original")
show_image_with_corners(building_image, coords)