METHODS AND APPARATUS TO CLUSTER AND COLLECT HEAD-TOE LINES FOR AUTOMATIC CAMERA CALIBRATION

摘要

An automatic method improves calibration of the camera by detecting key body points on people in images (100); extracting, from the key body points, orthogonal lines that extend from a head to feet of the people (110); selecting, from the orthogonal lines, head-toe lines of the people who are standing upright in the images (120); and calibrating the camera from the head-toe lines of the people who are standing upright in the images (130).