Distance image capturing apparatus and distance image capturing method using distance image capturing apparatus
Abstract:
A distance image capturing apparatus has a light source unit that emits an intermittent light pulse into a space, a light receiving unit that includes a plurality of pixels each having a photoelectric conversion device and electric charge accumulating units, and a distance image processing unit. The distance image processing unit acquires an electric charge amount distributed by a predetermined fixed number of times and accumulated in the accumulating units. The distance image processing unit acquires electric charge amounts accumulated in the accumulating units with different number of times of electric charge distribution as one set and selects one of a first electric charge amount with a larger number of electric charge distribution and a second electric charge amount for acquiring a distance from a subject based on a comparison result with a threshold.
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