A regulated black colorant amount calculating section calculates a corresponding regulated black colorant amount from the L*a*b* of a plurality of typical color signals in a partial color gamut, which can be represented by three colors excluding black. More specifically, the systems and methods of the invention allows for determination of the analytes even at very low concentration, through concentration on a collection interface, desorption and analysis by mass spectrometry. , to facilitate providing uniform illumination of the targets when recording a set of images of the scene, thereby reducing noise that may arise in connection with determining the locations of the targets if they were illuminated by structured illumination, while contemporaneously providing that the objects can be illuminated by structured illumination when the images are recorded. Image matching means calculates similarity between the input image and the image generated. The user of a master phone may utilize a different service provider than a passenger.