Hi all,
Just trying to understand how the value of the matrix fed to imshow()
function determines the intensity of the pixel in grey scale mode.
Consider the example code:
import random
import matplotlib.pyplot as plt
import matplotlib.cm as cm
def pixels(n=3):
pixel_data = []
for _ in range(n):
row = []
for _ in range(n):
row.append(random.randint(1, 10))
pixel_data.append(row)
return pixel_data
if __name__ == '__main__':
pixel_data = pixels()
print(pixel_data)
plt.imshow(pixel_data, origin='lower', cmap=cm.Greys_r)
plt.show()
The pixel_data here is the 3*3 "matrix":
[[7, 4, 6], [7, 7, 6], [4, 7, 9]]
How does the values here determine what shade of grey I see in the image?
Thank you in advance.
Best,
Amit.
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