Backup diff of Sobel (No. 1)

• Backup list
• View the diff current.
• View the diff for visual.
• View the source.
• View the backup.
• Go to Sobel.
  • 1 (2022-01-24 (Mon) 02:39:04)

• The added line is THIS COLOR.
• The deleted line is THIS COLOR.

[[Convolution]]

- https://docs.opencv.org/3.4/d2/d2c/tutorial_sobel_derivatives.html