Physics-Based Image Segmentation Using First Order Statistical Properties and Genetic Algorithm for Inductive Thermography Imaging

Bin Gao, Xiaoqing Li, Wai Lok Woo, Gui Yun Tian

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)
7 Downloads (Pure)

Abstract

Thermographic inspection has been widely applied to non-destructive testing and evaluation with the capabilities of rapid, contactless, and large surface area detection. Image segmentation is considered essential for identifying and sizing defects. To attain a high-level performance, specific physics-based models that describe defects generation and enable the precise extraction of target region are of crucial importance. In this paper, an effective genetic first-order statistical image segmentation algorithm is proposed for quantitative crack detection. The proposed method automatically extracts valuable spatial-temporal patterns from unsupervised feature extraction algorithm and avoids a range of issues associated with human intervention in laborious manual selection of specific thermal video frames for processing. An internal genetic functionality is built into the proposed algorithm to automatically control the segmentation threshold to render enhanced accuracy in sizing the cracks. Eddy current pulsed thermography will be implemented as a platform to demonstrate surface crack detection. Experimental tests and comparisons have been conducted to verify the efficacy of the proposed method. In addition, a global quantitative assessment index F-score has been adopted to objectively evaluate the performance of different segmentation algorithms.
Original languageEnglish
Pages (from-to)2160-2175
Number of pages16
JournalIEEE Transactions on Image Processing
Volume27
Issue number5
Early online date14 Dec 2017
DOIs
Publication statusPublished - 1 May 2018
Externally publishedYes

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