| US 11,758,263 B2 | ||
| Systems, devices, and methods for imaging and measurement using a stereoscopic camera system | ||
| Claudio Irrgang, Brampton (CA); Steven P. Meyer, Toronto (CA); and Desmond Hirson, North York (CA) | ||
| Assigned to MOLECULIGHT, INC., Toronto (CA) | ||
| Filed by MOLECULIGHT INC., Toronto (CA) | ||
| Filed on Aug. 24, 2021, as Appl. No. 17/410,040. | ||
| Prior Publication US 2023/0067762 A1, Mar. 2, 2023 | ||
| Int. Cl. H04N 13/106 (2018.01); H04N 13/156 (2018.01); H04N 13/239 (2018.01); H04N 13/254 (2018.01); G06T 7/80 (2017.01); G06T 7/00 (2017.01); H04N 23/63 (2023.01); H04N 13/296 (2018.01); H04N 13/128 (2018.01); G06T 7/33 (2017.01); H04N 23/60 (2023.01); H04N 13/00 (2018.01) | ||
| CPC H04N 23/631 (2023.01) [G06T 7/0012 (2013.01); G06T 7/337 (2017.01); G06T 7/85 (2017.01); H04N 13/128 (2018.05); H04N 13/156 (2018.05); H04N 13/239 (2018.05); H04N 13/254 (2018.05); H04N 13/296 (2018.05); H04N 23/64 (2023.01); G06T 2207/10064 (2013.01); G06T 2207/30088 (2013.01); H04N 2013/0081 (2013.01)] | 40 Claims |
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1. A portable, handheld imaging system for measurement of a target, comprising:
an imaging assembly comprising a first camera sensor and a second camera sensor, the first camera sensor being separated from the second camera sensor by a fixed separation distance; and a processor operably coupled to the imaging assembly, the processor being configured to:
calibrate the imaging assembly by capturing calibration images with the imaging assembly and calculating manufacturing coefficients from the captured calibration images;
store the calculated manufacturing coefficients in a reference table;
activate the imaging assembly to capture a primary image of the target with the first camera sensor and to capture a secondary image of the target with the second camera sensor, wherein the target is in a field of view of each of the first and second camera sensors;
analyze the captured primary and secondary images to determine a pixel shift value for the target;
calculate a parallax value between the primary image and the secondary image by determining a target-plane pixel size in mm based on the stored manufacturing coefficients and the determined pixel shift value;
compute measurement data related to the target based on the calculated parallax value; and
output the measurement data to a display of the handheld imaging system.
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