Color smear correction based on inertial measurements
Technologies are generally described to correct color smear in an image generated using a sequential color system. In some examples, a correction system for see-through displays may use inertial movement data to compute the relative motion of the visual backdrop to correct color amplitudes and reduce or eliminate motion-caused color smear. A system according to embodiments may compute the angular motion of the background from inertial inputs, compute the pixel-angle equivalent motion time, and apply sequential color balancing across a time that corresponds to the pixel-angle motion time.
1. A method to correct color smear in an image generated using a sequential color system, the method comprising:
determining at least one movement parameter associated with the image;
computing a view duration associated with the image based on the at least one movement parameter;
determining a color correction to the sequential color system based on the view duration and a timing parameter associated with the sequential color system;
determining a color imbalance based on the view duration and the timing parameter;
one or more of: decreasing an excess color component and increasing a deficient color component based on the color imbalance; and
applying the color correction to the sequential color system for every pixel in the image.
2. The method of claim 1 , further comprising determining the at least one movement parameter based on an inertial measurement associated with the image.
3. The method of claim 1 , wherein the at least one movement parameter is one or more of: a translational and a rotational parameter associated with one or more of: the image and an entity to which the image is displayed.
4. The method of claim 1 , further comprising:
using the at least one movement parameter to determine a rate of motion of a view of at least one pixel in the image across a virtual background sphere; and
computing the view duration based on the determined rate of motion.
5. The method of claim 1 , wherein the timing parameter is a color component projection time.
6. The method of claim 1 , further comprising:
determining a rate of change of a background; and
determining the color correction based on the view duration, the timing parameter, and the rate of change of the background.
7. The method of claim 1 , further comprising:
determining that the view duration has elapsed; and
in response, redetermining the at least one movement parameter, recomputing the view duration, redetermining the color correction, and reapplying the color correction.
8. A computing device configured to generate an image and correct color smear in the generated image, the computing device comprising:
a sequential color system configured to switch between a plurality of different color components based on a color component projection time to generate the image; and
a processor block coupled to the sequential color system, the processor block configured to:
determine at least one movement parameter associated with the image;
compute a view duration associated with the image based on the at least one movement parameter;
determine a color correction to the sequential color system based on the view duration and a timing parameter associated with the sequential color system;
determine a color imbalance based on the view duration and the timing parameter;
one or more of: decrease an excess color component and increase a deficient color component based on the color imbalance; and
apply the color correction to the sequential color system for each pixel in the image.
9. The computing device of claim 8 , wherein the processor block is further configured to determine the at least one movement parameter based on an inertial measurement associated with the image.
10. The computing device of claim 8 , wherein the at least one movement parameter is one or more of: a translational and a rotational parameter associated with one or more of: the image and an entity to which the image is displayed.
11. The computing device of claim 8 , wherein the processor block is further configured to:
use the at least one movement parameter to determine a rate of motion of a view of at least one pixel in the image across a virtual background sphere; and
compute the view duration based on the determined rate of motion.
12. The computing device of claim 8 , wherein the processor block is further configured to:
determine a rate of change of a background; and
determine the color correction based on the view duration, the color component projection time, and the rate of change of the background.
13. The computing device of claim 8 , wherein the processor block is configured to apply the color correction by at least one of:
applying the color correction at every pixel in the image; and
applying the color correction at a light source for the image.
14. The computing device of claim 8 , wherein the processor block is further configured to:
determine that the view duration has elapsed; and
in response, redetermine the at least one movement parameter, recompute the view duration, redetermine the color correction, and reapply the color correction.
15. An inertial color smear correction module comprising:
an inertial sensor data module communicatively coupled to at least one inertial sensor; and
a processor block coupled to the inertial sensor data module, the processor block configured to:
determine at least one movement parameter associated with a generated image based on an inertial measurement provided by the inertial sensor data module, the at least one movement parameter comprising one or more of: a translational and a rotational parameter associated with one or more of: the image and an entity to which the image is displayed;
compute a view duration associated with the image based on the at least one movement parameter;
determine a color correction to a sequential color system used to generate the image based on the view duration and a timing parameter associated with the sequential color system;
determine a color imbalance based on the view duration and the timing parameter;
one or more of: decrease an excess color component and increase a deficient color component based on the color imbalance; and
apply the color correction to the sequential color system for each pixel in the image.
16. The inertial color smear correction module of claim 15 , wherein the processor block is further configured to:
use the at least one movement parameter to determine a rate of motion of a view of at least one pixel in the image across a virtual background sphere; and
compute the view duration based on the determined rate of motion.
17. The inertial color smear correction module of claim 15 , wherein the timing parameter is a color component projection time.
18. The inertial color smear correction module of claim 15 , wherein the processor block is further configured to:
determine a rate of change of a background; and
determine the color correction based on the view duration, the timing parameter, and the rate of change of the background.
19. The inertial color smear correction module of claim 15 , wherein the processor block is configured to apply the color correction by at least one of:
applying the color correction at every pixel in the image; and
applying the color correction at a light source for the image.
20. The inertial color smear correction module of claim 15 , wherein the processor block is further configured to:
determine that the view duration has elapsed; and
in response, redetermine the at least one movement parameter, recompute the view duration, redetermine the color correction, and reapply the color correction.