Take a 512 x 512 image containing noise. Design low-pass, band-pass, and high-pass zonal masks in different transform domains such that their passbands contain equal energy. Map the three filtered images into R, G, B color components at each pixel and display the resultant pseudocolor image
Scan and digitize a low-contrast image (such as fingerprints or a coin). Develop a technique based on contrast ratio mapping to bring out the faint edges in such images.