Retinal-inspired method and system for improved detection
AssigneeNational Technology & Engineering Solutions of Sandia, LLC
InventorsFrances S. Chance, Christina E. Warrender
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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.
Claims20
A sensor data filtering device, comprising:
- a first layer configured to receive signals from an array of sensor pixels and determine changes in pixel values;
- a second layer configured to receive the changes in pixel values from the first layer, detect motion based on the changes in pixel values and transmit motion output signals to a processing station;
- a third layer 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, wherein 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;
- and
- a fourth layer configured to receive motion output signals from the second layer and integrate motion values within defined subsections of the field of view, wherein 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.
A method of filtering sensor data, comprising the steps of:
- receiving signals from an array of sensor pixels and determining changes in pixel values;
- detecting motion based on the changes in pixel values and transmitting motion output signals to a processing station;
- detecting correlated changes in pixel values across a predetermined field of view and modifying the motion output signals if a sum of correlated changes in pixel values within the field of view exceeds a predetermined threshold;
- and
- integrating motion values within defined subsections of the field of view and modifying the motion output signals of the second layer for a subsection if a sum of motion values within that subsection exceeds a predetermined threshold.
Dependencies are inferred from the claim text.