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1. (US20160350921) AUTOMATIC CAMERA CALIBRATION

Office : United States of America
Application Number: 15169035 Application Date: 31.05.2016
Publication Number: 20160350921 Publication Date: 01.12.2016
Publication Kind : A1
IPC:
G06T 7/00
G06K 9/00
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
T
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
7
Image analysis, e.g. from bit-mapped to non bit-mapped
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
K
RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9
Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
CPC:
G06T 7/0018
G06T 7/0085
G06K 9/00771
G06T 220/20061
Applicants: Accenture Global Solutions Limited
Inventors: Cyrille Bataller
Philippe Daniel
Priority Data:
Title: (EN) AUTOMATIC CAMERA CALIBRATION
Abstract: front page image
(EN)

This document describes systems, methods, devices, and other techniques for automatically calibrating a video camera based on video information received from the video camera. In some implementations, a computing device receives video information comprising a video signal from a video camera, wherein the video signal shows a 2D scene of an environment captured by the video camera; identifies (i) two or more vertical lines shown in the 2D scene, (ii) two or more horizontal lines shown in the 2D scene, and (iii) one or more objects shown in the 2D scene; based on the identified one or more objects, determines a height of a vertical line in the 2D scene; and based on (i) the identified two or more vertical lines, (ii) the identified two or more horizontal lines, and (iii) the determined height of the vertical line in the 2D scene, calibrate the video camera.