Crop recognition by combined calibration of laser radar and camera

Crop recognition technology is widely used in precise targeted spray of weed, fruit picking robot, plant pest identification and others. Laser acquires the depth information of crops, while the image information is captured by the camera. The actual size and position can be obtained by fusion of depth information and image information of crops. Domestic and international crop recognition researches were analyzed from the two aspects of machine vision and laser detection. Crop recognition based on machine vision used color, texture, shape and location features, while crop recognition based on laser detection used the depth information. The current situation of the fusion of laser radar information and camera information to identify crops was analyzed. Meanwhile the methods of combined calibration of laser radar and camera were summed up and the importance of combined calibration of laser radar and camera in crop recognition was pointed out.