| US 7,612,880 B2 | ||
| Advanced polarization imaging method, apparatus, and computer program product for retinal imaging, liquid crystal testing, active remote sensing, and other applications | ||
| Russell Chipman, Tucson, Ariz. (US) | ||
| Assigned to Arizona Board of Regents on Behalf of the University of Arizona, Tucson, Ariz. (US) | ||
| Appl. No. 10/567,104 PCT Filed Aug. 03, 2004, PCT No. PCT/US2004/024477 § 371(c)(1), (2), (4) Date Nov. 10, 2006, PCT Pub. No. WO2005/017826, PCT Pub. Date Feb. 24, 2005. |
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| Claims priority of provisional application 60/492805, filed on Aug. 06, 2003. | ||
| Prior Publication US 2007/0146632 A1, Jun. 28, 2007 | ||
| Int. Cl. G01J 4/00 (2006.01) | ||
| U.S. Cl. 356—364 [356/365; 356/369] | 19 Claims |
| 1. A method for identifying features in an object, comprising:
positioning and focusing a polarimeter onto the object;
illuminating the object with a series of at least 16 polarization states;
analyzing a plurality of reflected images corresponding to said at least 16 polarization states;
obtaining a Mueller matrix from the plurality of reflected images; and
calculating a plurality of depolarization parameters, except for the depolarization index, from the Mueller matrix as a contrast
mechanism for identifying features of the illuminated object.
|