Optical distance measuring method and optical distance measuring device
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United States of America Patent
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Feb 2, 2021
Grant Date -
Feb 28, 2019
app pub date -
May 9, 2018
filing date -
Aug 29, 2017
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Abstract
The present invention provides an optical distance measuring method, comprising confirming an expression of a first measured distance according to a plurality of first parameters; computing a time-of-flight (ToF) measured distance according to a time of flight; computing optimized values of the plurality of first parameters and an optimized value of a ToF error corresponding to the ToF measured distance according to the expression of the first measured distance and the ToF measured distance; and obtaining a depth image information according to the ToF measured distance, the optimized values of the plurality of first parameters and the optimized value of the ToF error; wherein the plurality of first parameters comprises an elevation angle and an Azimuth angle corresponding to the object reflecting point and a distance between the light emitting module and the light sensing module.
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