matlab please

Green screen special effects: Objects are filmed in front of a screen with a very specific shade of green. Then a computer program checks the color of each pixel of the image. Pixels matching that specific shade of green are replaced with pixels from another image. Pixels not matching that specific shade of green are left alone Compose an image using the green screen rabbitGreenScreen.jpg file and replace the green color by nature_background.jpg file. The TA will provide both image files during the lab. Read and show the images using: filename='INSERT FILENAME; testImage = imread(' filename); imshow(testImage)