Patent ID: 7308131
Filing Date: 2007-12-11
Classification: G06T

Abstract:
1. A method for determining a parameter of an image acquisition system from an omnidirectional-like image, the method comprising: generating an omnidirectional-like image via an image acquisition system; and directly determining a parameter of said image acquisition system based on a geometrical characteristic of said omnidirectional-like image, wherein said omnidirectional-like image forms a part of an overall image that includes a boundary in which said omni-directional-like image is enclosed and an unused portion that resides outside of said boundary, wherein said directly determining a parameter comprises detecting at least a portion of an edge that separates said omnidirectional-like image from said unused portion, retaining edge pixels situated in an area which corresponds to a range where an outer edge of said omnidirectional-like image can be situated, and fitting said edge pixels to a circle; and