US 12,406,470 B2
Apparatus for optical image recognition and classification
Thomas Müller, Vienna (AT)
Assigned to Technische Universität Wien, Vienna (AT)
Appl. No. 18/023,400
Filed by Technische Universität Wien, Vienna (AT)
PCT Filed Aug. 28, 2020, PCT No. PCT/EP2020/074074
§ 371(c)(1), (2) Date Feb. 27, 2023,
PCT Pub. No. WO2022/042851, PCT Pub. Date Mar. 3, 2022.
Prior Publication US 2023/0274529 A1, Aug. 31, 2023
Int. Cl. G06V 10/764 (2022.01); G06T 7/10 (2017.01)
CPC G06V 10/764 (2022.01) [G06T 7/10 (2017.01); G06T 2207/20084 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An apparatus for optical image recognition and classification, comprising:
an optical setup to split the optical image into n=1, 2, . . . , N local optical power values Pn,
a detector array with n=1, 2, . . . N photoactive pixels to pick up the local optical power values Pn, wherein
each pixel is segmented into subpixels, and
each subpixel comprises a semiconductor photodiode which, under optical illumination, delivers a photocurrent depending on its photoresponsivity value and the local optical power Pn received at the pixel,
wherein
the photoresponsivity values of the subpixels within a pixel are not identical, and
the outputs of the subpixels of each pixel are connected to form a number of separate output lines, wherein each output line sums the photodetector currents produced by different subpixels within each pixel and delivers a number of detector currents to be used for recognizing and classifying the optical image.