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2020年02月08日
zonghua zhang， yue liu
scientific reports，2017，7（10293）：10293
2017年07月10日
with the advent of intelligent manufacturing, phase measuring deflectometry (pmd) has been widely studied for the measurement of the three-dimensional (3d) shape of specular objects. however, existing pmds cannot measure objects having discontinuous specular surfaces. this paper presents a new direct pmd (dpmd) method that measures the full-field 3d shape of complicated specular objects. a mathematical model is derived to directly relate an absolute phase map to depth data, instead of the gradient. two relevant parameters are calibrated using a machine vision-based method. on the basis of the derived model, a full-field 3d measuring system was developed. the accuracy of the system was evaluated using a mirror with known positions along an accurate translating stage. the 3d shape of a monolithic multi-mirror array having multiple specular surfaces was measured. experimental results show that the proposed dpmd method can obtain the full-field 3d shape of specular objects having isolated and/or discontinuous surfaces accurately and effectively.
phase measuring deflectometry， specular surface， 3d shape measurement
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2017年05月23日
【期刊论文】an iterative distortion compensation algorithm for camera calibration based on phase target
张宗华
sensors, 2017, 17(6): 1188，-0001，（）：
-1年11月30日
yongjia xu, feng gao, hongyu ren, zonghua zhang, and xiangqian jiang.
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2014年05月10日
张宗华， yongjia xu， chao chen， shujun huang， zonghua zhang*
optics and lasers in engineering, 2014, 61(1): 1-7，-0001，（）：
-1年11月30日
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2012年05月23日
张宗华， zonghua zhang， zhao jing， zhaohui wang， and dengfeng kuang.
optics and lasers in engineering, 2012, 50(8): 1152-1160.，-0001，（）：
-1年11月30日
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2012年05月23日
张宗华， zonghua zhang.
optics and lasers in engineering. 2012, 50(8): 1097-1106.，-0001，（）：
-1年11月30日
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河北工业大学，河北
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