The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 09, 2019
Filed:
Jan. 04, 2018
Tsinghua University, Beijing, CN;
Qionghai Dai, Beijing, CN;
Jingtao Fan, Beijing, CN;
TSINGHUA UNIVERSITY, Beijing, CN;
Abstract
A method and an apparatus for calibrating an image sensor array in a microscopic imaging system are provided. The method includes: performing a vignetting effect calibration and correction on the image sensor array, such that pixels acquired by all sub-field-of-view image sensors for capturing a scene with a same radiant exitance have a same gray level; performing a light encoding on a temporal-spatial union structure using a spatial light modulator, to establish correspondences of a plurality of feature points between an image space and a physical space; performing a light decoding on the temporal-spatial union structure, to acquire pixel coordinates of the plurality of feature points in an image plane and physical coordinates of the plurality of feature points in a plane of the spatial light modulator; acquiring a homography relationship according to the pixel coordinates and the physical coordinates, acquiring a global coordinate mapping according to the homography relationship.