Exercise 6

Load an image and apply some filters in the spatial domain.

1. Load the file moon.png and save it into the working directory.
2. Compute the derivative filters (difference quotient, Roberts, Sobel) and the Laplacian.
3. Apply the sharpening filtering through the gradient and the Laplacian.
4. Display the resulting images.

Possible solutions:

• difference quotient;
• Roberts;
• Sobel;
• Laplacian.