IMAGING USING OFFSETTING ACCUMULATIONS

摘要

In some examples, a light source is controlled to output light. A sensor element outputs first detections responsive to a combined light comprising ambient light and the light output by the light source when the light source is on, and outputs second detections responsive to ambient light when the light source is off. The first detections are routed to a first accumulator to produce a first accumulation, and the second detections are routed to a second accumulator to produce a second accumulation. An adjusted output image is generated by removing a contribution of the second accumulation from the first accumulation.

主权项

1. An imaging system comprising:
a sensor element to:
output first detections responsive to combined light comprising ambient light and light from a controlled light source, andoutput second detections responsive to ambient light in an absence of light from the controlled light source; a plurality of accumulators; a switch to:
route the first detections to a first accumulator of the plurality of accumulators, the first accumulator to accumulate the first detections to produce a first accumulation, androute the second detections to a second accumulator of the plurality of accumulators, the second accumulator to accumulate the second detections to produce a second accumulation; and a readout circuit comprising an amplifier, the readout circuit to receive the first accumulation and the second accumulation, and to remove a contribution of the second accumulation from the first accumulation.