Muncy, Geissler, Olds & Lowe, P.C.
Image measurement device and method for the surface deformation of specimen based on sub-pixel corner detection
A digital image measurement device and method for the surface deformation of specimen based on sub-pixel corner detection is disclosed. This digital image measurement device is composed of a new type of image pressure cell, a complementary metal-oxide-semiconductor (CMOS) camera, a camera bracket, a flexible lens hood, a computer and matching measurement software. This method discretizes the specimen into several four-node finite elements by printing grids on the specimen and takes corners of the grids as the nodes of the finite elements; tracks the deformation of the feature points in real time by edge detection and corner detection based on sub-pixel; captures the deformation of the whole surface of the specimen by the two flat mirrors which are at an 120° angle behind the specimen; achieves the observation of the deformation of the whole surface by conducting splicing and error correction on the three images.
Suzhou H-C Soil & Water Science and Technology Co., Ltd Dalian University of Technology
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Jie Chuan Xiaoxia Longtan Pingxin Xiao Xicheng Chun Peng Ying Yonglu Mingming
Xue Huang Guo Shao Xia Liu Li Wang Ju Wang Liu Wu