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US 11,822,287 B1Granted
Binocular holographic machine vision system and method for identifying locations of target elements
OwnerChris Hsinlai Liuinventor
Life of this patent
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Abstract
The present disclosure describes binocular machine vision systems and methods for determining locations of target elements. This disclosure describes the transformation of multiple 2D sensor data into 3-dimensional position and employs the full range of through-focus imaging using a single image for each Receptor.
Claims12
A system for determining, in a first and a second holographic image receptors' common three-dimensional (X, Y, Z) coordinate system, position of a point source provided within the first and second holographic image receptors' field of view, the system comprising:
- the first holographic image receptor being configured to reconstruct a holographic image of the point source, whereby the holographic image corresponds to a two-dimensional location (S1, T1) on the plane of the first holographic image receptor;
- the second holographic image receptor being configured to reconstruct a holographic image of the point source, whereby the holographic image corresponds to a two-dimensional location (U1, V1) on the plane of the second holographic image receptor;
- a computing device communicatively coupled to the first and second holographic image receptors, the computing device being configured to:
- identify, based on a calibration table of the first holographic image receptor and on a calibration table of the second holographic image receptor, a location (X1, Y1, Z1) in the three-dimensional coordinate system that matches with the two-dimensional location (S1, T1) on the plane of the first holographic image receptor and the two-dimensional location (U1, V1) on the plane of the second holographic image receptor,
- whereby the location (X1, Y1, Z1) corresponds to the position of the point source,
- wherein each holographic image receptor's calibration table was pre-generated by,
- positioning a calibration point source at a plurality of calibration positions from the first and second holographic image receptors, whereby at each calibration position, the first and second holographic image receptors are configured to:
- reconstruct a holographic image of the calibration point source on each image receptor's plane;
- and
- for each image receptor, associate, in each image receptor's calibration table, a two-dimensional location of the holographic image on the plane of the image receptor with a location of the calibration point source as defined in the first and the second holographic image receptors' common three-dimensional (X, Y, Z) coordinate system.
7 more elements
A method for determining, in a first and a second holographic image receptors' common three-dimensional (X, Y, Z) coordinate system, position of a point source provided within the first and second holographic image receptors' field of view, the method comprising the steps of:
- reconstructing, using the first holographic image receptor, a holographic image of the point source, whereby the holographic image corresponds to a two-dimensional location (S1, T1) on the plane of the first holographic image receptor;
- reconstructing, using the second holographic image receptor, a holographic image of the point source, whereby the holographic image corresponds to a two-dimensional location (U1, V1) on the plane of the second holographic image receptor;
- identifying, using a computing device communicatively coupled to the first and second holographic image receptors, based on a calibration table of the first holographic image receptor and on a calibration table of the second holographic image receptor, a location (X1, Y1, Z1) in the three-dimensional coordinate system that matches with the two-dimensional location (S1, T1) on the plane of the first holographic image receptor and the two-dimensional location (U1, V1) on the plane of the second holographic image receptor,
- whereby the location (X1, Y1, Z1) corresponds to the position of the point source,
- wherein each holographic image receptor's calibration table was pre-generated by,
- positioning a calibration point source at a plurality of calibration positions from the first and second holographic image receptors, whereby at each calibration position, the first and second holographic image receptors are configured to:
- reconstruct a holographic image of the calibration point source on each image receptor's plane;
- and
- for each image receptor, associate, in each image receptor's calibration table, a two-dimensional location of the holographic image on the plane of the image receptor with a location of the calibration point source as defined in the first and the second holographic image receptors' common three-dimensional (X, Y, Z) coordinate system.
6 more elements
Dependencies are inferred from the claim text.