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Your search keyword '"Hu, Z.Y."' showing total 159 results
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159 results on '"Hu, Z.Y."'

6. Property investigation of the wedge-shaped CsI(Tl) crystals for a charged-particle telescope

Author

Li, G., Lou, J.L., Ye, Y.L., Hua, H., Wang, H., Han, J.X., Liu, W., Bai, S.W., Tan, Z.W., Ma, K., Chen, J.H., Yang, L.S., Wang, S.J., Hu, Z.Y., Yu, H.Z., Zhu, H.Y., Xia, B.L., Jiang, Y., Liu, Y., Yang, X.F., Li, Q.T., Xu, J.Y., Wang, J.S., Yang, Y.Y., Ma, J.B., Chen, R.F., Ma, P., Bai, Z., Duan, F.F., Hu, L.Y., Li, J.W., Li, Y, Song, Y.S., Zhang, Suyalatu, and Huang, M.R.

Published
2021
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30. The invariant representations of a quadric cone and a twisted cubic

Author

Wu, Y.H. and Hu, Z.Y.

Subjects
Machine vision -- Research
Abstract

Up to now, the shortest invariant representation of a quadric has 138 summands and there has been no invariant representation of a twisted cubic in 3D projective space, which limit to some extent the applications of invariants in 3D space. In this paper, we give a very short invariant representation of a quadric cone, a special quadric, which has only two summands similar to the invariant representation of a planar conic, and give a short invariant representation of a twisted cubic. Then, a completely linear algorithm for generating the parametric equations of a twisted cubic is provided also. Finally, we exemplify some applications of our proposed invariant representations in the fields of computer vision and automated geometric theorem proving. Index Terms--Automated theorem proving, computer vision, invariant representation, quadric cone, twisted cubic.

Published
2003

31. A note on the number of solutions of the noncoplanar P4P problem

Author

Hu, Z.Y. and Wu, F.C.

Subjects
Pattern recognition -- Models, Artificial intelligence -- Models
Abstract

In the literature, the PnP problem is indistinguishably defined as either to determine the distances of the control points from the camera's optical center or to determine the transformation matrices from the object-centered frame to the camera-centered frame. In this paper, we show that these two definitions are generally not equivalent. In particular, we prove that, if the four control points are not coplanar, the upper bound of the P4P problem under the distance-based definition is 5 and also attainable, whereas the upper bound of the P4P problem under the transformation-based definition is only 4. Finally, we study the conditions under which at least two, three, four, and five different positive solutions exist in the distance based noncoplanar P4P problem. Index Terms--The Noncoplanar P4P Problem, rigid transformation, upper bound.

Published
2002

33. Effects of jugular infusions of isoleucine, leucine, methionine, threonine, and other amino acids on insulin and glucagon concentrations, mammalian target of rapamycin (mTOR) signaling, and lactational performance in goats

Author

Xu, L.B., primary, Hanigan, M.D., additional, Lin, X.Y., additional, Li, M.M., additional, Yan, Z.G., additional, Hu, Z.Y., additional, Hou, Q.L., additional, Wang, Y., additional, Shi, K.R., additional, and Wang, Z.H., additional

Published
2019
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