2. A. Filter the image given on the right with a 3x 3 Laplacian filter (4-way mask with a coefficient of 4 in the center). To avoid the border effect, calculate the filter's responses when the center of the mask is only within the darkened region (ie the size of the filtered image will be 3x4 pixels).

B. Why did the left and right parts of the filtered image look so different?

C. What procedure would you recommend to show the filtered image on a monitor screen (including negative pixel values)?

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