Non-uniformity correction calibrations in infrared imaging systems and methods
AssigneeTeledyne FLIR Commercial Systems, Inc.
InventorsAdam Crook, Julie R. Moreira
Life of this patent
Estimating the term…
Abstract
Techniques for facilitating non-uniformity correction calibrations are provided. In one example, an infrared imaging system includes an infrared imager and a logic device. The infrared imager is configured to capture a set of infrared images of a reference object. The reference object is substantially at a single temperature. The logic device is configured to initiate a run-time calibration of the infrared imager and generate a gain map based on the set of infrared images and an offset map associated with the infrared imager. Related devices and methods are also provided.
Claims18
A method comprising:
- initiating a run-time calibration of an imager of an imaging device;
- capturing, by the imager, a set of infrared images of a reference object, wherein the reference object is substantially at a single temperature, and wherein the reference object is a single temperature shutter of the imaging device or a single temperature external source;
- and
- generating a gain map based on the set of infrared images and an offset map associated with the imager, wherein the offset map is a factory calibrated offset map, and wherein run-time calibrations of the imager leave the offset map unchanged and are performed to generate gain maps that are updated relative to a factory calibrated gain map.
An infrared imaging system comprising:
- an infrared imager configured to capture a set of infrared images of a reference object, wherein the reference object is substantially at a single temperature, and wherein the reference object is a single temperature shutter of the infrared imaging system or a single temperature external source;
- and
- a logic device configured to initiate a run-time calibration of the infrared imager and generate a gain map based on the set of infrared images and an offset map associated with the infrared imager, wherein the offset map is a factory calibrated offset map, and wherein the logic device is configured to initiate run-time calibrations of the infrared imager that leave the offset map unchanged and that generate gain maps that are updated relative to a factory calibrated gain map.
Dependencies are inferred from the claim text.