Staas & Halsey LLP
Method for recognizing markers using dynamic threshold and learning system based on augmented reality using marker recognition
A method for recognizing markers printed on a learning material, includes sampling an image of the learning material; grouping the sampled image of pixels into a first image group and a second image group based on a threshold; and calculating medians of the first image group and the second image group to update the threshold with a first average value of the calculated medians. Further, the method for recognizing markers printed on the learning material includes repeating the above until a difference between a previous threshold and an updated threshold is equal to or smaller than a reference value; binarizing an image captured by a camera based on the updated threshold; and detecting the markers based on the binary image.
Electronics and Telecommunications Research Institute
G G
G06V G06V
inventional inventional
Shihua Seokjae Sangwon Junsuk Yong Hun Su Woong
Ming Lee Um Lee Kim Lee