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US 8,558,899 B2Granted
System and method for super-resolution digital time delay and integrate (TDI) image processing
AssigneeThe Aerospace Corporation
InventorThomas J. Grycewicz
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Abstract
Super-resolution time delay and integrate (TDI) imaging processing and systems for providing same utilize imaging geometry configured such that a predictable sub-pixel component of the frame-to-frame image motion can be used to construct a high-resolution output image from multiple under-sampled low-resolution input images.
Claims53
An imaging system comprising:
- an imaging device configured to capture a sequence of input images of a scene as a field of regard of the imaging device changes in position in relation to the scene pursuant to an imaging geometry;
- and
- a processor configured to utilize the imaging geometry to determine a sub-pixel component of frame-to-frame image motion and to use the sub-pixel component to construct a high-resolution output image from the input images integrating contributions to each output pixel of the output image in the pixel.
An imaging method comprising:
- utilizing a camera to capture a sequence of input images of a scene in a camera grid such that the scene is rotated in relation to the camera grid and frame-to-frame motion is introduced along the sequence of images;
- computing image motion with respect to a reference frame for a high-resolution output image;
- and
- forming the high-resolution output image by processing the valid contributions from each sub-image or image of the camera grid at every pixel of the camera to provide output pixels of the output image, said processing including combining the valid contributions to each of the output pixels respectively in said pixel.
1 more element
Dependencies are inferred from the claim text.