关键词: 分步式裂缝检测, 块噪声, 自适应阈值, 桥梁路面, 光照不均

Abstract:  In order to enhance an effect of crack detection on the roadbed of bridge, multiple commonly noisy is analyzed on the roadbed of bridge. Combined with characteristic feature of various kinds noisy on the roadbed of bridge, a novel distributed crack detection model based on the roadbed of bridge crack is presented. The whole distributed crack detection model is composed of turning grayscale, preliminary to extract grayscale cracks, wiping off block noise, wiping off pseudo crack. Meanwhile, to extract tiny cracks in the uneven illumination, adaptive threshold selected model is presented. The example shows that the detection model is trustworthy and stable, moreover it can dispose a great quantity complex images with crack on the roadbed of bridge, where contain comprehensive noisy.

Key words: distributed crack detection, block noise, adaptive threshold, bridge roadbed, uneven illumination