To measure three dimensional shape indexes of maize ear quickly and nondestructively

3D shape indexes measurement system of maize ear based on Xtion sensor is designed. Multi-view cloud datas of the maize ear are acquired by using Xtion and electromotion turntable

iterative closest point（ ICP） algorithm is used to mosaic complete point cloud data

Poisson surface reconstruction is using on the basis of the result of registration and then the volume of the reconstructed mesh is calculated using the divergence theorem. The results show that the errors between the true value and measured value of the volume are within 9%. The method provides a practical new approach for automatic three dimensional traits measurement of maize ear.