Shaping algorithm for laser spot

In order to eliminate the backscattering phenomenon of the infrared laser sport images, or make the distribution of laser spot's gray levels reasonable, a backscattering suppression algorithm based on the spot center of gravity and an algorithm for compensating the gray levels of a laser spot were proposed. The backscattering suppression algorithm was based on extracting the laser spot's center of gravity. Then, the radius of the laser spot can be determined. Finally, the gray levels of the image should be decided by the set threshold. The algorithm for compensating the gray levels of the laser spot was based on determining the laser spot's edge points. Then, the center of the laser spot can be calculated. After that, the center should be corrected through the intensity of regional energy, and the radius of the laser spot would be confirmed. Finally, the gray levels of the laser spot were adjusted through the laser spot's center and radius. The experiment results of these two algorithms and their analyses were shown. Research proves that the backscattering suppression algorithm can substantially eliminate the backscattering phenomenon in the laser spot image, and the distribution of laser spot's gray levels is improved. The images which are processed by the algorithms are suitable for further analysis in engineering experiments or real-time observation.