Combined biometrics capture system with ambient free infrared
AssigneeIntel Corporation
InventorMikko Ollila
Life of this patent
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Abstract
An electronic device is disclosed herein that includes an infrared light source to emit infrared light, a rolling shutter sensor, and at least one processor. The at least one processor is to: cause the rolling shutter sensor to output a first signal corresponding to a first frame of image data during exposure to the infrared light, reset the rows of the rolling shutter sensor at a same time, cause the rolling shutter sensor to output a second signal corresponding to a second frame of image data without exposure to the infrared light from the infrared light source, determine a difference between the first signal and the second signal to generate an ambient infrared free frame, and recognize a face based on the ambient infrared free frame.
Claims25
An electronic device comprising:
- a rolling shutter sensor;
- machine readable instructions;
- and
- processor circuitry to execute the machine readable instructions to:
- cause the rolling shutter sensor to capture first image data during exposure to an infrared light pulse, the rolling sensor shutter to output a first signal corresponding to a first frame of the first image data,
- reset a row of the rolling shutter sensor,
- cause the rolling shutter sensor to capture second image data during exposure to ambient light, the rolling shutter to output a second signal corresponding to a second frame of the second image data,
- determine a difference between the first signal and the second signal to generate a difference frame, and
- process the difference frame for face recognition.
A computer readable storage device or disc comprising instructions to be executed to cause one or more processors to:
- cause a rolling shutter sensor to output a first signal corresponding to a first frame of image data captured during exposure to an infrared light pulse,
- reset a row of the rolling shutter sensor,
- cause the rolling shutter sensor to output a second signal corresponding to a second frame of image data captured during exposure to ambient infrared light,
- determine a difference between the first signal and the second signal, and
- process the difference for face recognition.
An electronic device comprising:
- a filter;
- a rolling shutter sensor;
- and
- processor circuitry to execute instructions to:
- cause the rolling shutter sensor to output a first signal corresponding to a first frame of video captured during exposure to infrared light emitted by the infrared light source,
- detect a first body part based on the first signal,
- change at least one of a voltage or a frequency of the filter,
- cause the rolling shutter sensor to output a second signal corresponding to a second frame of video captured during exposure to infrared light emitted by the infrared light source,
- globally reset rows of rolling shutter sensor,
- cause the rolling shutter sensor to output a third signal corresponding to a third frame of video captured without exposure to the infrared light from the infrared light source,
- determine a difference between the second signal and the third signal, and
- process the difference for recognition of a second body part.
An electronic device comprising:
- means for capturing video;
- and
- means for processing image data from the video, the processing means to:
- cause the capturing means to:
- capture first image data during exposure to an infrared light pulse, and
- output a first signal corresponding to a first frame of the first image data,
- reset a row of the capturing means,
- cause the capturing means to:
- capture second image data during exposure to ambient light, and
- output a second signal corresponding to a second frame of the second image data,
- determine a difference between the first signal and the second signal, and
- process the difference for face recognition.
Dependencies are inferred from the claim text.