USING CAPTURED HIGH AND LOW RESOLUTION IMAGES

• US 20160316141A1
• Filed: 07/07/2016
• Published: 10/27/2016
• Est. Priority Date: 08/31/2009
• Status: Active Grant

• Current Assignee: Intellectual Ventures Fund 83 LLC (Intellectual Ventures LLC)
• Original Assignee: Intellectual Ventures Fund 83 LLC (Intellectual Ventures LLC)
• Inventors: Deever, Aaron T.
• Granted Patent: US 9,661,218 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06T 3/4076 using the original low-resolution images to iteratively correct the high-resolution images
• CPC Class Codes: H04N 23/60 Control of cameras or camera modules
• CPC Class Codes: H04N 23/81 for suppressing or minimising disturbance in the image signal generation
• CPC Class Codes: H04N 23/843 Demosaicing, e.g. interpolating colour pixel values
• CPC Class Codes: H04N 23/951 by using two or more images to influence resolution, frame rate or aspect ratio
• CPC Class Codes: H04N 25/46 by combining or binning pixels
• CPC Class Codes: H04N 25/60 Noise processing, e.g. detecting, correcting, reducing or removing noise
• CPC Class Codes: H04N 5/265 Mixing

Abstract

A method for producing an improved high resolution image is disclosed including capturing low resolution images and a high resolution image; combining the low resolution images to provide an aggregate low resolution image; reducing the resolution of the high resolution image to provide an image representative of a low resolution image that could have been captured by the image capture device; interpolating the representative low resolution image to provide an interpolated high resolution image; calculating a residual image from the high resolution image and the interpolated high resolution image; combining the representative low resolution image and the aggregate low resolution image to provide a final low resolution image; and using the final low resolution image and the residual image to provide the improved high resolution image.

Claims

1. A method for producing an improved high resolution image, the method comprising:

capturing low resolution images and a high resolution image;

combining the low resolution images to provide an aggregate low resolution image;

reducing the resolution of the high resolution image to provide an image representative of a low resolution image that could have been captured by the image capture device;

interpolating the representative low resolution image to provide an interpolated high resolution image;

calculating a residual image from the high resolution image and the interpolated high resolution image; and

mapping matching pixels from the aggregate low resolution image and the representative low resolution image.

2. The method of claim 1, further comprising forming a final low resolution image for matching pixels;

3. The method of claim 2, wherein the final low resolution image for matching pixel includes a weighted average of the aggregate low resolution image and the representative low resolution image pixel data.

4. The method of claim 3, wherein the weighted average is calculated as a function of a noise standard deviation of the aggregate low resolution image and the representative low resolution image.

5. The method of claim 2, further comprising forming a final low resolution image for non-matching pixels.

6. The method of claim 5, wherein the final low resolution image for non-matching pixels includes a value of the representative low resolution image.

7. The method of claim 1, further comprising estimating motion between the aggregate low resolution image and the representative low resolution image.

8. A system comprising:

an image capture device configured to capture a low resolution image of a scene and a high resolution image of the scene;

a response filter coupled to the image capture device, wherein the response filter is configured to combine the low resolution image with other low resolution images to provide an aggregate low resolution image; and

a processor configured to reduce the resolution of the high resolution image to provide an image representative of a low resolution image that could have been captured by the image capture device;

interpolate the representative low resolution image to provide an interpolated high resolution image;

calculate a residual image from the high resolution image and the interpolated high resolution image; and

map matching pixels from the aggregate low resolution image and the representative low resolution image.

9. The system of claim 8, wherein the processor is further configured to form a final low resolution image for matching pixels.

10. The system of claim 9, wherein the final low resolution image for matching pixel includes a weighted average of the aggregate low resolution image and the representative low resolution image pixel data.

11. The system of claim 10, wherein the weighted average is calculated as a function of a noise standard deviation of the aggregate low resolution image and the representative low resolution image.

12. The system of claim 9, wherein the processor is further configured to form a final low resolution image for non-matching pixels.

13. The system of claim 12, wherein the final low resolution image for non-matching pixels includes a value of the representative low resolution image.

14. The system of claim 8, wherein the processor is further configured to estimate motion between the aggregate low resolution image and the representative low resolution image.

15. A non-transitory computer-readable medium having instructions stored thereon for providing an improved high resolution image using low resolution images and at least one high resolution image of a scene captured by an image capture device, the instructions comprising:

instructions for capturing low resolution images of a scene and a high resolution image of the scene;

instructions for combining the low resolution images to provide an aggregate low resolution image;

instructions for reducing the resolution of the high resolution image to provide an image representative of a low resolution image that could have been captured by the image capture device;

instructions for interpolating the representative low resolution image to provide an interpolated high resolution image;

instructions for calculating a residual image from the high resolution image and the interpolated high resolution image;

instructions for estimating motion between the aggregate low resolution image and the representative low resolution image; and

instructions for mapping matching pixels from the aggregate low resolution image and the representative low resolution image.

16. The non-transitory computer-readable medium of claim 15, further comprising instructions for forming a final low resolution image for matching pixels;

17. The non-transitory computer-readable medium of claim 16, wherein the final low resolution image for matching pixels include a weighted average of the aggregate low resolution image and the representative low resolution image pixel data.

18. The non-transitory computer-readable medium of claim 17, wherein the weighted average is calculated as a function of a noise standard deviation of the aggregate low resolution image and the representative low resolution image.

19. The non-transitory computer-readable medium of claim 16, further comprising instructions for forming a final low resolution image for non-matching pixels.

20. The non-transitory computer-readable medium of claim 18, wherein the final low resolution image for non-matching pixels includes a value of the representative low resolution image.