Retinal-inspired method and system for improved detection
| DWPI Title: Sensor data filtering device used in image processing for remote sensing, has specific layer that modifies motion output signals of sub layer for subsection if sum of motion values within that subsection exceeds predetermined threshold |
| Abstract: The present disclosure provides a method and device for filtering sensor data. Signals from an array of sensor pixels are received and checked for changes in pixel values. Motion is detected based on the changes in pixel values, and motion output signals are transmitted to a processing station. If the sum of correlated changes in pixel values across a predetermined field of view exceeds a predetermined value, indicating sensor jitter, the motion output signals are suppressed. If a sum of motion values within a defined subsection of the field of view exceeds a predetermined threshold, indicating the presence of a large object of no interest, the motion output signals are suppressed for that subsection. |
| Use: Sensor data filtering device used in image processing for remote sensing, streaming video, autonomous platform, security system and remote sensor such as camera, unmanned aerial vehicle (UAV), telescope and satellite (all claimed). Can also be used for detecting small moving objects such as vehicle and people on ground, airborne target presented against earth background and moving target in air or earth orbit. |
| Advantage: The sensor data filtering device reduces overall bandwidth and processing requirements at the ground station while respecting the size weight and power (SWAP) constraints of the sensor platform. The transmission bandwidth and processing resources of sensor data filtering device are saved. The sensor data filtering device provides size tuning of motion signals to take account of large environmental objects within the field of view that is moving slowly or appear to be moving as a result of changing angles of view caused by the movement of the sensor platform. |
| Novelty: The device has a second layer that is configured to receive changes in pixel values from a first layer, detect motion based on the changes in pixel values, and transmit motion output signals to a processing station. A third layer is configured to receive the changes in pixel values from the first layer, and detect correlated changes in pixel values across a predetermined field of view. The third layer is configured to modify the motion output signals of the second layer if a sum of correlated changes in pixel values within the field of view exceeds a predetermined threshold. A fourth layer is configured to receive motion output signals from the second layer, and integrate motion values within defined subsections of the field of view. The fourth layer is configured to modify the motion output signals of the second layer for a subsection if a sum of motion values within that subsection exceeds a predetermined threshold. |
| Filed: 8/9/2018 |
| Application Number: US16059746A |
| Tech ID: SD 14665.0 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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