Please using matlab to solve 7 8 9 and contain the screenshot of the result , thank you.

6, Perform Problem #5 with 5x5 filters and 7x7 filters instead of 3x3 filters. Comment on the performance of each filter size. State which one works better. 7. Open the standard image, 'coins.png' with the imread () function. Display the image with the same 256-element gray colormap. Use the Matlab function, graythresh() to threshold the image and make a Black & White image Display the B&W image. Adjust the threshold level to of its calculated value and make and display another B& W image. What is the result? 8. Using the -level results from Problem #7, dilate the Black & White image Aus with a small circle, 'disk', and display the results. Adjust the disk size and see what happens. Erode the resulting B& W image with the same disk and display the results. What is the result? What other Matlab) operation is a dilation 5 followed by an erosion? /t 9. Count the number of coins from Problem #8. The answer shotll te ID Automatically sum the value of the coins based on their size (i.e., the number of pixels per coin). Look at Matlab's connected components. You may have to remove the smaller objects using bwareaopen() or by checking the size of the pixel index list