Q1. An image comprises of just 4 circles in black color against a white background. The circles encompass the same radius however are positioned at different portions of the image.
Show how the Hough transform could be employed to detect these circles.
Q2. Point out how an image is segmented by using region based segmentation.
Q3. Consider the given image segment that consists of 3 gray levels.
Calculate the gray level co-occurrence matrix for this image, by selecting the position operator P as ‘one pixel to the right and one pixel below'. Determine the number of point pairs in the image satisfy P? Work out the numerical value of texture in terms of maximum probability criterion.
Q4. What do you mean by sharpening filter? Point out any one of the sharpening filter which could be used on the gray level image.