US 11,808,852 B2
Method and system for optical distance measurement
Guo-Zhen Wang, Hsin-Chu (TW)
Assigned to PixArt Imaging Inc., Hsin-Chu (TW)
Filed by PixArt Imaging Inc., Hsin-Chu (TW)
Filed on Sep. 27, 2021, as Appl. No. 17/485,518.
Application 17/485,518 is a continuation of application No. 16/108,066, filed on Aug. 21, 2018, granted, now 11,163,063.
Application 16/108,066 is a continuation of application No. 14/864,809, filed on Sep. 24, 2015, granted, now 10,088,568, issued on Oct. 2, 2018.
Claims priority of application No. 103146094 (TW), filed on Dec. 29, 2014.
Prior Publication US 2022/0011429 A1, Jan. 13, 2022
Int. Cl. G01S 17/48 (2006.01); G01S 7/4912 (2020.01); G01S 7/4913 (2020.01)
CPC G01S 17/48 (2013.01) [G01S 7/4912 (2013.01); G01S 7/4913 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An image processing method, comprising:
acquiring a plurality of sensed values based on detecting light;
configuring a threshold value for each row of sensed values;
comparing sensed values of each row with a corresponding threshold value 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.