振动与冲击
振動與遲擊
진동여충격
JOURNAL OF VIBRATION AND SHOCK
2015年
18期
73-78,99
,共7页
陈苏%陈国兴%韩晓健%戚承志%杜修力
陳囌%陳國興%韓曉健%慼承誌%杜脩力
진소%진국흥%한효건%척승지%두수력
Hough 变换圆检测%最优圆拟合圆检测%非接触性位移测试方法%振动台试验
Hough 變換圓檢測%最優圓擬閤圓檢測%非接觸性位移測試方法%振動檯試驗
Hough 변환원검측%최우원의합원검측%비접촉성위이측시방법%진동태시험
hough transform circle detection%optimal circle fitting circle detection%non-contact displacement test method%shaking table test
针对Hough变换、最优圆拟合两种圆检测算法进行了圆检测效果、算法应用范围及计算效率的对比分析;研发了基于圆检测算法的非接触性动态位移测试方法并应用于大型振动台实验。结果表明:Hough 变换圆检测及最优圆拟合圆检测均具有较好的圆参数检测效果。Hough 变换圆检测方法更适用于测试背景简单且需单次识别多个标靶圆的工况;最优圆拟合圆检测方法更适用于测试背景复杂的工况。应用非接触性位移测试方法于大型振动台试验中,测试了模型地基土的位移反应。应用基于机器视觉技术的位移测试方法可以有效解决复杂工况下的位移测试问题。
針對Hough變換、最優圓擬閤兩種圓檢測算法進行瞭圓檢測效果、算法應用範圍及計算效率的對比分析;研髮瞭基于圓檢測算法的非接觸性動態位移測試方法併應用于大型振動檯實驗。結果錶明:Hough 變換圓檢測及最優圓擬閤圓檢測均具有較好的圓參數檢測效果。Hough 變換圓檢測方法更適用于測試揹景簡單且需單次識彆多箇標靶圓的工況;最優圓擬閤圓檢測方法更適用于測試揹景複雜的工況。應用非接觸性位移測試方法于大型振動檯試驗中,測試瞭模型地基土的位移反應。應用基于機器視覺技術的位移測試方法可以有效解決複雜工況下的位移測試問題。
침대Hough변환、최우원의합량충원검측산법진행료원검측효과、산법응용범위급계산효솔적대비분석;연발료기우원검측산법적비접촉성동태위이측시방법병응용우대형진동태실험。결과표명:Hough 변환원검측급최우원의합원검측균구유교호적원삼수검측효과。Hough 변환원검측방법경괄용우측시배경간단차수단차식별다개표파원적공황;최우원의합원검측방법경괄용우측시배경복잡적공황。응용비접촉성위이측시방법우대형진동태시험중,측시료모형지기토적위이반응。응용기우궤기시각기술적위이측시방법가이유효해결복잡공황하적위이측시문제。
The circle detection effect,algorithm application range and calculation efficiency of different circle detection algorithms were analysed comparatively.Base on the circle detection algorithms,a vision-based dynamic displacement test method was developed and applied to large-scale shaking table tests.The results show that:both Hough transform circle detection algorithm and optimal fitting circle detection algorithm have good performance in circle parameters detection.The Hough transform circle detection algorithm is more suitable for testing under such operation conditions in which the test background is simple or with the need of identifying multiple target circles at once.The optimal fitting circle detection method is more suitable for testing under such operation conditions in which the test background is complex.By applying the vision-based displacement testing method to large-scale shaking table tests,the deformation of a model of soil foundation was tested.The method proposed can effectively solve the problem of displacement testing in complex test conditions.