期刊
AEROSPACE SCIENCE AND TECHNOLOGY
卷 105, 期 -, 页码 -出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ast.2020.105911
关键词
View registration; Image processing; Optical sensing
View registration (VR) refers to the process of determining the orientations and locations of the images captured by one or more cameras. It represents a fundamental procedure underpinning a wide spectrum of applications, ranging from optical sensing, object identification, and image processing. 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 of a new view registration procedure, referred to as the variable view method (VVM). The VVM 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, the VVM can significantly improve the VR accuracy compared to the FVM, by more than 40% in the tests conducted here. Such enhanced accuracy is expected to benefit a range of applications, and a specific example is demonstrated involving three-dimensional velocity measurement based on particle imaging velocimetry. (c) 2020 Elsevier Masson SAS. All rights reserved.
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