An improved view registration method and its application in laser imaging measurements

摘要

View registration (VR) is a procedure that determines the orientations and locations in a given coordinate system based on images captured by one or more cameras. Existing VR procedures typically rely on a set of images captured on a fixed calibration target (referred to as FVM, fixed view method, hereafter). This work reports the development and application of a new view registration procedure, referred to as the variable view method (WM). The WM procedure relies on a set of images taken on a calibration target at various orientations and/or distances. As shown in this work, both numerically and experimentally, with a set of carefully selected views, the WM can significantly improve the VR accuracy compared to the FVM. Such enhanced accuracy is expected to benefit a range of applications, and its potential to improve the accuracy of common laser imaging measurements are discussed.