Correcting frame-to-frame image changes due to motion for three dimensional (3-D) persistent observations
First Claim
1. A system configured to capture images, comprising:
- an airborne or space-based movable imaging platform having a single sensor that is configured to capture images of a scene, each image comprising a plurality of pixels; and
an image processor configured to;
calculate one or more transformations based on a deterministic path determined from information received regarding movement of the imaging platform, viewing geometry of the single sensor, or both;
digitally transform captured images with respect to a common field of view (FOV), the one or more transformations compensating for the relative motion between the scene and the imaging platform such that the transformed images appear to be taken by a non-moving imaging platform, in which the pixel size and orientation of pixels are the same, and any motion remaining being residual motion; and
from the residual motion, identify and track apparent motion of one or more features of a stationary target in the scene, each of which moves, apparently, along a calculated deterministic path as a function of the imaging platform'"'"'s motion and location of the stationary target with respect to center of the field of view of the imaging platform.
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Abstract
An imaging platform minimizes inter-frame image changes when there is relative motion of the imaging platform with respect to the scene being imaged, where the imaging platform may be particularly susceptible to image change, especially when it is configured with a wide field of view or high angular rate of movement. In one embodiment, a system is configured to capture images and comprises: a movable imaging platform having a sensor that is configured to capture images of a scene, each image comprising a plurality of pixels; and an image processor configured to: digitally transform captured images with respect to a common field of view (FOV) such that the transformed images appear to be taken by a non-moving imaging platform, wherein the pixel size and orientation of pixels of each transformed image are the same. A method for measuring and displaying 3-D features is also described.
36 Citations
28 Claims
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1. A system configured to capture images, comprising:
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an airborne or space-based movable imaging platform having a single sensor that is configured to capture images of a scene, each image comprising a plurality of pixels; and an image processor configured to; calculate one or more transformations based on a deterministic path determined from information received regarding movement of the imaging platform, viewing geometry of the single sensor, or both; digitally transform captured images with respect to a common field of view (FOV), the one or more transformations compensating for the relative motion between the scene and the imaging platform such that the transformed images appear to be taken by a non-moving imaging platform, in which the pixel size and orientation of pixels are the same, and any motion remaining being residual motion; and from the residual motion, identify and track apparent motion of one or more features of a stationary target in the scene, each of which moves, apparently, along a calculated deterministic path as a function of the imaging platform'"'"'s motion and location of the stationary target with respect to center of the field of view of the imaging platform. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 27)
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14. A method for capturing images, the method comprising:
- capturing images of a scene with a sensor on an airborne or space-based moving imaging platform having a single sensor, each image comprising a plurality of pixels;
calculating one or more transformations based on a deterministic path determined from information received regarding movement of the imaging platform, viewing geometry of the single sensor, or both; digitally transforming captured images with respect to a common field of view (FOV), the one or more transformations compensating for the relative motion between the scene and the imaging platform such that the transformed images appear to be taken by a non-moving imaging platform, in which the pixel size and orientation of pixels are the same, and any motion remaining being residual motion; and from the residual motion, identifying and tracking apparent motion of one or more features of a stationary target in the scene, each of which moves, apparently, along a calculated deterministic path as a function of the imaging platform'"'"'s motion and location of the stationary target with respect to center of the field of view of the imaging platform. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 28)
- capturing images of a scene with a sensor on an airborne or space-based moving imaging platform having a single sensor, each image comprising a plurality of pixels;
Specification