Abstract
A Laser scanner obtains a range value from the sensor toward the target by measuring the round-trip time of a laser pulse. At the same time, the reflectivity, which is the strength of the reflected light, can be acquired as a by-product of range information. Utilizing the reflectivity, we propose a new colorization technique for 3D models obtained by laser scanners. Pictures and reflectance images have similarities in their appearances. Focusing on that, we colorize a monochrome reflectance image utilizing the analogy to a color picture taken for the same scene, and then create a colorized 3D model by mapping color information to it corresponding to the reflectance image.
