In this paper, an improved canny edge detection algorithm was represented to obtain thin and robust edge. Firstly, nonlinear diffusion filter was used to wipe of noise efficiently and kept the edge information of the image. Secondly, gradient calculation of pixel diagonal direction was considered ...
Then, an improved Canny algorithm using an automatic threshold from the Otsu method was used to extract the overall object contour. Finally, feature fusion of edge contours and the foreground area was performed to obtain the final object contour. The experimental results show that this method ...
Rong W, Li Z, Zhang W, Sun L (2014) An improved Canny edge detection algorithm. 2014 IEEE international conference on mechatronics and automation. IEEE, pp 577–582 Chapter Google Scholar Shih CF, Moran B, Nakamura T (1986) Energy release rate along a three-dimensional crack front in a...
The railway track extraction using unmanned aerial vehicle (UAV) aerial images suffers from issues such as low extraction accuracy and high time consumption. In response to these problems, this paper presents a lightweight algorithm DA-DeepLabv3 +
常用的边缘检测算法有Canny边缘检测算子、Sobel算 子、Prewitt算子、Robert算子,但是这些方法在很多方 面往往不尽如人意。另外,如何实现图像库中图像边 缘的自动提取已经成为一个日益重要的问题。 Marr边缘检测算法 [1] 克服了一般微分运算对噪 声敏感的缺点,利用能够反映人眼视觉特性的LOG算 ...
Further, Table 1 demonstrates that the error rate has reduced significantly and the accuracy of oil spill area has improved obviously. In summary, the new algorithm is time-saving and high accuracy in ordinary remote-sensing image processing. The extraction results can play an important role in ...
For the line art image, the conventional edge detection algorithm, such as eXtended Difference-of-Gaussians (XDoG) (Ci et al., 2018; Zou et al., 2019; Lee and Lee, 2020; Kim et al., 2019; Liu et al., 2017), Canny Edge Detection algorithm (Seo and Seo, 2021; Thasarathan and ...
information,AnadjustedCannyedgedetectionalgorithmisappliedtodetecttheoceanfrontfirstly,thenthemorphologicalbinaryreconstructionandHit-or-Missalgorithmareappliedtoreprocesstheprimaryoceanfront,ensuringthecontinuityandthepositioningaccuracyofoceanfrontTheresultsshowthatthealgorithmiseffectiveandpracticalintheoceanfrontdetection...
An improved clustering algorithm was proposed in this work, which originates from Fuzzy c-Means Clustering (FCM). FCM is one of the algorithms used commonly to extract fuzzy rules from type-1 fuzzy logic system. However, its application is merely limited to dots set. This deficiency is ...
When Canny edge detection algorithm was just proposed, only the first partial derivatives of the x and y direction were calculated [38]. Some scholars improved the calculation method of partial derivatives, such as changing the size of difference operator from 2 × 2 to 3 × 3, or increasing...