Method and system for optical distance measurement
AssigneePixart Imaging Inc.
InventorGuo-Zhen Wang
Life of this patent
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Abstract
An optical distance measurement method includes: acquiring a plurality of sensed values based on detecting light; performing a filtering operation to select a plurality of selected sensed values from the plurality of sensed values; determining a location of a centroid according to the plurality of selected sensed values; and calculating a plurality of depth values with respect to a plurality of detecting points according to the location of the centroid and a plurality of depth information transformation functions respectively corresponding to the detecting points.
Claims8
An optical distance measurement method, comprising:
- acquiring a plurality of sensed values based on detecting light;
- performing a filtering operation to select a plurality of selected sensed values from the plurality of sensed values;
- determining a location of a centroid according to the plurality of selected sensed values;
- and
- calculating a plurality of depth values with respect to a plurality of detecting points according to the location of the centroid and a plurality of depth information transformation functions respectively corresponding to the detecting points.
An optical distance measurement system, comprising:
- an optical sensing device, arranged for acquiring a plurality of sensed values based on detecting light;
- a filtering module, coupled to the optical sensing device and arranged for performing a filtering operation to select a plurality of selected sensed values from the plurality of sensed values;
- a centroid determination module, coupled to the filtering module and arranged for determining a location of a centroid according to the plurality of selected sensed values;
- and
- a depth information calculation module, coupled to centroid determination module and arranged for calculating a plurality of depth values with respect to a plurality of detecting points according to the location of the centroid and a plurality of depth information transformation functions respectively corresponding to the detecting points.
An optical distance measurement method, comprising:
- acquiring a plurality of optical sensed values at different times;
- determining a plurality of locations of centroid according to the plurality of optical sensed values;
- and
- calculating a plurality of depth information corresponding to the plurality of locations of centroid according to the plurality of locations of centroid and a plurality of transformation functions.
Dependencies are inferred from the claim text.