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+--- Thread: How to mask the region out side the region of interest (/thread-17267.html)
How to mask the region out side the region of interest - Sri - Apr-04-2019
Hi,
I have below the circle, and I want to pick three regions of interest.
I created a filled circle with center at (0,0), a radius is 20. Now I want to select four ROI (region of interest) and mask the region outside the ROI with black color
ROI 1: A semicircle with center at (0,0), and with radius 5 (to the right side, meaning opened to right side)
ROI 2: A semicircle with center at (0,0), and with radius 5 (to the left side, meaning open to the left side)
ROI 3: A semicircle with center at (0,0), and with radius 5 (to bottom, meaning open to bottom)
ROI 4: A semicircle with center at (1,1), and with radius 3 (opened upside)
I could not be able to attach the figures.
import matplotlib.pyplot as plt
def create_circle():
circle= plt.Circle((0,0), radius= 20)
return circle
def show_shape(patch):
ax=plt.gca()
ax.add_patch(patch)
plt.axis('scaled')
plt.show()
if __name__== '__main__':
c= create_circle()
show_shape(c)