Improve laser detection in CCD for integrated photogrammetry - Laser scanner

The specified properties of both the close-range photogrammetry and laser-scanning have their advantages and specific limitations. In this paper we are going to expose such advantage and combine this methods to exploit their natural synergy, additionally a new pre-processing technique to realize a quick identification of the laser centroid and edges detected by a CCD is presented, this technique can be used in a combination with edge detection techniques as Canny and Prewitt methods to obtain more defined edges in an image. Finally the experimentation is presented to see the stability of the identified centroid in the laser reflection at different thresholds using the proposed technique in an Integrated Photogrammetry-Laser Scanner.