Research on rice spike layer heights detection based on depth camera
In order to realize rice spike layer height detection,a research on rice spike layer height calculation method based on depth camera was carried out to provide technical support for the height control of harvester header.In order to select a color space suitable for rice spike layer segmentation,this paper visualized mature rice images in RGB,HSV,LAB and i1i2i3 color spaces in 3D space respectively,and analyzed the separability of rice spike layer by observing pixels'distribution.The rice spike layer was extracted based on the multi-threshold segmentation method,small joint region removing and image erosion.A spike layer heights calculation method was proposed based on a depth camera and the method was validated in the laboratory and in the field.The results showed that the rice spike layer had the best separability in HSV color space,and the adopted image segmentation and processing methods could effectively segment the rice spike layer.The laboratory test of the developed calculation method showed that the calculation errors of both Hhs and Hls were less than 1.5%,and the field test showed that the calculation errors of Hhs and Hls were 1.6%and 18.2%,respectively.
spike layerriceheight detectiondepth cameracolor space
万方数据
维普
