An examination on shape feature extraction based on the elliptic approximation for spatial arrangement of earthenware pieces by using 3D measured point clouds
Kazuto Yoshikawa, Tsutomu Kinoshita, Kouichi Konno · 2020
In this paper, we propose a method to estimate the height of nonadjacent pieces of earthenware. To estimate the height of a piece of earthenware without finding its adjacent pieces, a point cloud in the cross-section of the earthenware is obtained, and the obtained point cloud is approximated by an elliptic curve. An ellipse approximated from the cross-section of one piece is compared with an ellipse approximated from the cross- section of another piece, and the relative height of the pieces is estimated from the positions of the most similar ellipses.