Method and system for estimating point spread function

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United States of America Patent

PATENT NO 10152774
APP PUB NO 20170024862A1
SERIAL NO

15217613

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Abstract

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The present disclosure relates to a method and device for estimating a point spread function. In one implementation, a method includes capturing, by a scanning device, an image by scanning a plurality of rectangle blocks which are same sized and closely arranged, wherein the plurality of rectangle blocks are made of different materials and/or have different mass thicknesses, and an incident direction of rays is perpendicular to a scanning direction and a surface of the plurality of rectangle blocks arranged closely during scanning; obtaining line spread functions for two directions along a length side and a width side of each of the rectangle blocks based on the scanned image, and obtaining standard deviation parameters of the line spread functions; and combining the standard deviation parameters for the two directions to obtain a two dimensional Point Spread Function (PSF) parameter so as to estimate the point spread function.

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Patent Owner(s)

  • TSINGHUA UNIVERSITY; NUCTECH COMPANY LIMITED

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Zhiqiang Beijing, CN 401 2412
Gu, Jianping Beijing, CN 55 218
Kang, Kejun Beijing, CN 77 1177
Li, Yuanjing Beijing, CN 271 1888
Liu, Yaohong Beijing, CN 106 542
Wang, Zhiming Beijing, CN 72 169
Zhang, Li Beijing, CN 2442 32206
Zhao, Ziran Beijing, CN 240 1222

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