US 12,135,240 B2
Heat assisted detection and ranging based on spectropolarimetric imaging
Zubin Jacob, West Lafayette, IN (US); Fanglin Bao, West Lafayette, IN (US); and Xueji Wang, West Lafayette, IN (US)
Assigned to Purdue Research Foundation, West Lafayette, IN (US)
Appl. No. 17/778,842
Filed by Purdue Research Foundation, West Lafayette, IN (US)
PCT Filed Dec. 6, 2020, PCT No. PCT/US2020/063521
§ 371(c)(1), (2) Date May 22, 2022,
PCT Pub. No. WO2021/113791, PCT Pub. Date Jun. 10, 2021.
Claims priority of provisional application 62/944,671, filed on Dec. 6, 2019.
Prior Publication US 2023/0341265 A1, Oct. 26, 2023
Int. Cl. G01J 3/28 (2006.01); G01J 3/00 (2006.01); G01J 3/10 (2006.01); G01J 3/447 (2006.01); G01J 4/00 (2006.01); G01J 4/04 (2006.01); G01J 5/00 (2022.01); G01J 5/48 (2022.01); G01J 5/59 (2022.01); G01N 21/21 (2006.01); G01N 21/25 (2006.01); G01N 21/35 (2014.01); G06F 18/22 (2023.01); G06V 10/143 (2022.01); G06V 10/30 (2022.01); G06V 10/40 (2022.01); G06V 10/54 (2022.01); G06V 10/75 (2022.01)
CPC G01J 3/2823 (2013.01) [G01J 3/00 (2013.01); G01J 3/108 (2013.01); G01J 3/447 (2013.01); G01J 4/00 (2013.01); G01J 5/00 (2013.01); G01J 5/485 (2022.01); G01J 5/59 (2022.01); G01N 21/21 (2013.01); G01N 21/25 (2013.01); G01N 21/35 (2013.01); G06F 18/22 (2023.01); G06V 10/143 (2022.01); G06V 10/30 (2022.01); G06V 10/40 (2022.01); G06V 10/54 (2022.01); G06V 10/751 (2022.01); G06V 10/758 (2022.01); G01J 2003/2833 (2013.01); G01J 4/04 (2013.01); G01J 2005/0077 (2013.01); G06T 2207/10036 (2013.01); G06T 2207/10048 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method of generating object surface texture in thermal infrared images comprising:
receiving heat radiation from a scene by a spectropolarimetric imaging system adapted to generate a plurality of spectral frames associated within the scene;
generating the plurality of spectral frames associated with the scene, each frame having a plurality of pixels;
for each pixel from the generated plurality of spectral frames, extracting spectral information associated with the scene, including pixel-specific temperature representing an object's temperature, and thermal texture factor representing the object's texture;
for each of a plurality of materials having a specific emissivity in a library, generating reference spectral information as a function of temperature and thermal texture;
matching the extracted spectral information for each pixel from the generated plurality of spectral frames to the generated reference spectral information using a statistical method to minimize an associated variation; and
extracting spectral metadata from the matched reference spectral information for the associated material based on the match.