Online compensation of thermal distortions in a stereo depth camera
An example apparatus includes: a camera to record an image; memory to store instructions; and a processor in circuit with the memory, the processor to execute the instructions to: determine a depth based on: (a) the image and (b) a calibration parameter of the camera; and adjust the calibration parameter based on a temperature of the camera and the depth.
1. A storage device or storage disk comprising instructions to cause programmable circuitry to at least:
access data generated by an infrared camera, the data corresponding to reflections of infrared light from a scene;
determine depth values based on: (a) the reflections, (b) a calibration of the infrared camera, (c) a time-of-flight corresponding to the reflections from the scene, and (d) temperature compensation; and
generate a depth image based on the depth values.
2. The storage device or storage disk of claim 1 , wherein the instructions are to cause the programmable circuitry to:
access a skeletal model; and
pass second data based on the skeletal model and the depth values to an application.
3. The storage device or storage disk of claim 1 , wherein the instructions are to cause the programmable circuitry to access second data from a color camera, the color camera separate from the infrared camera.
4. The storage device or storage disk of claim 1 , wherein the instructions are to cause the programmable circuitry to control a light source to cast the infrared light onto the scene.
5. The storage device or storage disk of claim 1 , wherein the instructions are to cause the programmable circuitry to access a temperature value in association with operation of the infrared camera.
6. The storage device or storage disk of claim 1 , wherein the instructions are to cause the programmable circuitry to track a body part gesture based on the data generated by the infrared camera.
7. The storage device or storage disk of claim 1 , wherein the instructions are to cause the programmable circuitry to generate the depth image based on a color camera.
8. An apparatus comprising:
a light source to cast infrared light onto a scene;
an infrared camera to capture reflections of the infrared light from the scene;
instructions; and
programmable circuitry to execute the instructions to:
determine depth values based on: (a) the reflections, (b) a calibration of the infrared camera, (c) a time-of-flight corresponding to the reflections from the scene, and (d) temperature compensation; and
generate a depth image based on the depth values.
9. The apparatus of claim 8 , wherein the programmable circuitry is to:
access a skeletal model; and
pass data based on the skeletal model and the depth values to an application.
10. The apparatus of claim 8 , including a color camera that is separated from the infrared camera by a distance.
11. The apparatus of claim 8 , wherein the programmable circuitry is to access a temperature value in association with operation of the infrared camera.
12. The apparatus of claim 8 , wherein the programmable circuitry is to track a body part gesture based on the reflections captured by the infrared camera.
13. The apparatus of claim 8 , including a housing, the housing to include the programmable circuitry, the light source, the infrared camera, a color camera, and a microphone.
14. A method comprising:
accessing data generated by an infrared camera, the data corresponding to reflections of infrared light from a scene;
determining depth values based on: (a) the reflections, (b) a calibration of the infrared camera, (c) a time-of-flight corresponding to the reflections from the scene, and (d) temperature compensation; and
generating a depth image based on the depth values.
15. The method of claim 14 , including:
accessing a skeletal model; and
passing second data based on the skeletal model and the depth values to an application.
16. The method of claim 14 , including accessing second data from a color camera, the color camera separate from the infrared camera.
17. The method of claim 14 , including casting the infrared light onto the scene.
18. The method of claim 14 , including accessing a temperature value in association with operation of the infrared camera.
19. The method of claim 14 , including tracking a body part gesture based on the data generated by the infrared camera.
20. The method of claim 14 , including generating the depth image based on a color camera.