Techniques and systems for developing high-resolution imagery
First Claim
Patent Images
1. A method for synthesizing a high resolution image comprising:
- receiving a sequence pair of images comprising a first image of a low resolution taken from a first camera and a second image of a high resolution taken from a second camera;
receiving a plurality of images temporally adjacent to the second image, the plurality of images being of a high resolution and taken from the second camera;
computing stereo correspondence maps between the first image and the second image;
computing temporal correspondence maps between the first image and each of the plurality of images; and
computing a composite high resolution version of the first image using the stereo correspondence maps and the temporal correspondence maps.
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Abstract
Systems and techniques for synthesizing high-resolution images are described. Using as input hybrid high- and low-resolution images (110, 120), processing techniques including three-dimensional image warp-based (160) rendering may assist in developing the high-resolution output images. Enhanced results may in some instances be obtained by creating a high-resolution images of one member of a pair of stereo images by utilizing multiple frames of the other member of the pair.
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Citations
7 Claims
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1. A method for synthesizing a high resolution image comprising:
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receiving a sequence pair of images comprising a first image of a low resolution taken from a first camera and a second image of a high resolution taken from a second camera; receiving a plurality of images temporally adjacent to the second image, the plurality of images being of a high resolution and taken from the second camera; computing stereo correspondence maps between the first image and the second image; computing temporal correspondence maps between the first image and each of the plurality of images; and computing a composite high resolution version of the first image using the stereo correspondence maps and the temporal correspondence maps. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for synthesizing a high resolution image comprising:
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receiving a sequence pair comprising a first image of a low resolution taken from a first camera and a second image of a high resolution taken from a second camera; receiving a third image and a fourth image temporally adjacent to the second image, the third and fourth image being of a high resolution and taken from the second camera; up-sampling the first image to full resolution; applying image enhancement to the up-sampled image; computing a planar parametric motion estimation for a specified planar region in the images to determine a planar alignment between the first image and the second image; using the planar alignment in computing a correspondence map between the first image and the second image using plane-plus-parallax alignment at the low resolution of the first image; establishing a correspondence between the first image, the second image, the third image and the fourth image that is displaced in rime by using optical flow; generating warped images from the second image, the third image and the fourth image using the correspondence map; computing stereo alignment maps between the warped images and the first image for color channels at a pyramid level 2; computing motion alignment maps between the third and fourth image and the first image for the color channels at pyramid level 2; combining all maps to produce a composite correlation map for each of the color channels at pyramid level 2; projecting the composite correlation map to pyramid level 0; combining all warped images to create a final composite image at pyramid level 2 and pyramid level 0; computing a correlation mask between the composite image and the first image at pyramid level 2 and project the mask to pyramid level 0; and fill in mis-aligned regions in the composite image with the color corrected, enhanced, and up-sampled first image.
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Specification