일반화 Hough변환을 응용한 콘크리트 레이더 화상 내 실제 철근위치의 검출 해석

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박석균
;魚本健人

  • 발행 : 2000.02.01

초록

Locating reinforcing bars, in particular to know their accurate depths, is very important in radar inspection of concrete structures. By the way, an accurate depth estimation of reinforcing bars in concrete structures by the radar is not easy because the microwave propagation velocity in test area is generally unknown. This problem can be solved by generalized Hough transformation technique. Using this technique, the microwave propagation velocity in test area cen be detected from the radar image, which appear as hyperbolas conveying the velocity information in their shape. A developed speed-up technique for the computation of the Generalized Hough transformation is also investigated in this study. As a result, although it becomes difficult to locate reinforcing bars when multiple parallel bars lying too close together, there is a possibility of detecting accurate depths of reinforcing bars in test area by the proposed method

키워드

radar;non-destructive testing;reinforcing bars;concrete structures;generalized hough transform

참고문헌

  1. IEICE TRANSACTIONS v.E74 no.10 Radar Image Processing for Locating Underground Linear Objects Toru KANEKO
  2. 日本土木學會第50回年次學術講演會議演槪要集 v.1 no.A 一般化 Hough變換を用いたレ-ダ 法による鐵筋位置の檢出 朴錫均
  3. Patterm Recognition v.13 no.2 Generalizing the Hough Tracsform to Detect Arbitrary Shapes D.Ballad
  4. 計測自動制御學會論文集 v.25 no.7 一般化Hough變換による地中採 査畵像の解析 山口;岡田;森下
  5. '99 봄학술발표회 논문집 큰크리트내 철근위치검출을 위한 레이더 화상처리기술 박석균