Apparatus for recording, transmission and reproduction of images; Calculating machines and data processing equipment; Calculating machines, data processing equipment and computers; Central processing units (CPU); Central processing units for processing information, data, sound or images; Circuit boards; Circuit boards provided with integrated circuits; Colorimeters; Computer firmware for grayscale to color and color to grayscale image conversion; Computer graphics boards; Computer graphics software; Computer hardware; Computer monitors; Computer motherboards and daughterboards; Computer software and hardware for grayscale to color and color to grayscale image conversion; Computer software for organizing and viewing digital images and photographs; Computer software for grayscale to color and color to grayscale image conversion; Computers and computer hardware; Digital signal processors; Graphics cards; Software for processing images, graphics and text; Software for the operational management of portable magnetic and electronic cards