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US 10,375,318 B2Granted
Apparatuses and methods for optical calibration
OwnerXuesong Li, Siyi Daiinventors
Life of this patent
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Abstract
An apparatus for optical calibration includes a calibration target simulating a combustion. The calibration target further includes a first light-emitting pattern and a first light-emitting mechanism effecting the first light-emitting pattern. The apparatus includes two optical cameras aiming at the calibration target, wherein each optical camera has an observation axis and there is an angle between the two observation axes.
Claims16
An apparatus for optical calibration, comprising
- a first calibration target simulating a combustion, the first calibration target further including
- a first light-emitting pattern;
- a first light-emitting mechanism effecting the first light-emitting pattern;
- and
- a second calibration target simulating the combustion, the second calibration target further including
- a second light-emitting pattern, the second light-emitting pattern being different from the first light-emitting pattern;
- and
- a second light-emitting mechanism effecting the second light-emitting pattern,
- wherein two optical cameras image the first calibration target at a position at a first image time, the two optical cameras image the second calibration target at the position at a second image time, each optical camera has an observation axis, there is an angle between the two observation axes,
- wherein the first and second calibration targets are three-dimensional physical and static objects.
7 more elements
An apparatus for optical calibration, comprising
- a first calibration target simulating moving particles, the first calibration target further including
- a first plurality of light-emitting particles, wherein the first plurality of light-emitting particles have a first position at a first time (T1);
- and
- a first light-emitting mechanism effecting the first plurality of light-emitting particles;
- and
- a second calibration target simulating moving particles, the second calibration target further including
- a second plurality of light-emitting particles, wherein the second plurality of light-emitting particles have a second position at a second time (T2), T2 is later than T1;
- and
- a second light-emitting mechanism effecting the second plurality of light-emitting particles,
- wherein two optical cameras image the first calibration target at a position at a first image time, the two optical cameras image the second calibration target at the position a second image time wherein each optical camera has an observation axis, there is an angle between the two observation axes,
- wherein the first and second calibration targets are three-dimensional physical and static objects.
8 more elements
A method for optical calibration, comprising
- creating a first digital model of a combustion, wherein the first digital model includes a first parameter;
- fabricating a calibration target of the combustion based on the first digital model, wherein the calibration target is a three-dimensional physical and static object;
- setting up at least two image capturing devices aiming at the calibration target;
- performing measurements of the calibration target using the at least two image capturing devices;
- and
- constructing a second digital model of the combustion based on the measurements using an algorithm, wherein the second digital model includes a second parameter;
- comparing the first parameter and the second parameter;
- determining whether a difference between the first parameter and the second parameter is less than a threshold;
- and
- calibrating the second parameter, if the difference between the first parameter and the second parameter is not less than the threshold.
7 more elements
Dependencies are inferred from the claim text.