1. A method of obtaining an image from a tissue of a body organ, said method comprising the steps of: positioning an in vivo detecting system in the proximity of said tissue of said body organ, said detecting system being a swallowable capsule, said detecting system comprising an array of pixel sensor cells providing output data representing an image of said tissue of said body organ, said array comprising a color filter layer formed of a plurality of red sensitive elements, blue sensitive elements and green sensitive elements, wherein said plurality of red, blue and green sensitive elements are arranged in a color filter pattern so that said red sensitive elements occur at every other element position of said color filter pattern, and wherein said blue sensitive elements and said green sensitive elements alternate with said red sensitive elements in alternate rows, respectively, of said color filter pattern; sampling the red color of said tissue of said body organ at a first frequency; and sampling the green color of said tissue of said body organ at a second frequency, wherein said first frequency is twice said second frequency.