Resolution and focus enhancement

• US 9,319,578 B2
• Filed: 10/24/2012
• Issued: 04/19/2016
• Est. Priority Date: 10/24/2012
• Status: Active Grant

• Current Assignee: Alcatel-Lucent SA (Nokia Corporation)
• Original Assignee: Alcatel-Lucent SA (Nokia Corporation)
• Inventors: Jiang, Hong, Huang, Gang, Matthews, Kim N., Wilford, Paul A.
• Primary Examiner(s): Koziol, Stephen R
• Assistant Examiner(s): Lee, Jonathan S
• Application Number:
  US13/658,904
• Publication Number:
  US 20140112594A1
• Time in Patent Office: 1,273 Days
• US Class Current: 1/1
• CPC Class Codes: G06T 5/73 Deblurring; Sharpening
• CPC Class Codes: H04N 23/67 Focus control based on electronic image sensor signals
• CPC Class Codes: H04N 23/80 Camera processing pipelines; Components thereof
• CPC Class Codes: H04N 23/815 for controlling the resolution by using a single image

Abstract

An exemplary system includes at least one detector configured to provide an output based on a detected input. A plurality of input control elements control the input detected by the detector. A processor is configured to determine at least one point spread function based on a condition of the detector, a condition of the input control elements and a selected distance associated with the output. The controller is configured to generate data based on the output and the at least one point spread function, the generated data having at least one aspect

Claims

1. A system, comprising:

at least one detector configured to provide an output based on a detected input;

a plurality of input control elements configured to control the input detected by the detector, wherein the plurality of input control elements comprises a plurality of shutter elements configured to selectively allow the detector to detect light; and

a processor configured to

determine a plurality of point spread functions based on a condition of the detector, a condition of the input control elements and a selected distance associated with the output, wherein the plurality of point spread functions are respectively associated with respective ones of the control elements and

generate data based on the output and the plurality of point spread functions, the generated data having at least one aspect, wherein the at least one aspect comprises a selected resolution or an enhanced resolution.

2. The system of claim 1, wherein

the resolution is based on the plurality of point spread functions.

3. The system of claim 2, wherein the resolution is finer than a base resolution provided by the plurality of input control elements.

4. The system of claim 1, wherein

the at least one aspect comprises a selected focus.

5. The system of claim 1, wherein

the detector is configured to detect light reflected from at least one object;

and

the generated data comprises an image.

6. The system of claim 5, wherein the processor is configured to

determine a collective point spread function from the plurality of point spread functions, each of the plurality of point spread functions being associated with a respective one of the shutter elements;

and

generate the image with the enhanced resolution based upon the collective point spread function.

7. The system of claim 6, wherein the enhanced resolution of the image has a resolution that is finer than a resolution of the plurality of shutter elements.

8. The system of claim 6, wherein the processor is configured to

determine a portion of the collective point spread function having a constant value;

and

generate the image with the enhanced resolution based on the portion having the constant value.

9. The system of claim 5, wherein the processor is configured to

determine the at least one point spread function based on a distance between the detector and at least one object in the image;

and

use the at least one point spread function to achieve a selected focus of the image.

10. The system of claim 8, wherein the processor is configured to improve a focus on the object in the image.

11. A method of enhancing a detector output, comprising the steps of:

determining an output of at least one detector , the output being dependent on a condition of a plurality of input control elements configured to control input detected by the detector, wherein the plurality of input control elements comprises a plurality of shutter elements configured to selectively allow the detector to detect light;

determining a plurality of point spread functions based on a condition of the input control elements and a selected distance associated with the output, the plurality of point spread functions being respectively associated with a respective one of the control elements, and

generated data base on the output and the plurality of point spread functions, the generated data having at least one aspect, wherein the at least one aspect comprises a selected resolution or an enhance resolution.

12. The method of claim 11, comprising generating the data having the selected resolution based on the plurality of point spread functions.

13. The method of claim 12, wherein the selected resolution is finer than a base resolution provided by the plurality of input control elements.

14. The method of claim 11, wherein the at least one aspect comprises a selected focus.

15. The method of claim 11, wherein

the detector is configured to detect light reflected from at least one object;

and

the generated data comprises an image.

16. The method of claim 15, comprising

determining a collective point spread function from the plurality of point spread functions;

and

generating an enhanced resolution of the image based upon the collective point spread function.

17. The method of claim 16, wherein the enhanced resolution of the image has a resolution that is finer than a resolution of the plurality of shutter elements.

18. The method of claim 16, comprising

determining a portion of the collective point spread function having a constant value;

and

generating the enhanced resolution based on the portion having the constant value.

19. The method of claim 15, comprising

determining the at least one point spread function based on a distance between the detector and at least one object in the image;

and

using the at least one point spread function to achieve a selected focus of the image.

20. The method of claim 18, comprising improving a focus on the object in the image.