sobel_edge_detection()

sobel_edge_detection()

2019/10/07

sobel_edge_detection(): apply the Sobel filters to the blurred images and compute

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// How Image Edge Detection Works - Aryaman Sharda - Medium

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// Edge detection with the Sobel operator in Ruby – saush

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// First-order Derivative kernels for Edge Detection _ TheAILearner

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// Sobel edge detector with scikit-image - Hands-On Image Processing with Python [Book]

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// Edge detection by Sobel operator - Rajeev Ranjan - Medium

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Step edge
Ramp edge
Ridge edge
Roof edge

// OpenCV – more on edge detection – CH.Tseng

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Laplacian
Sobel
Canny
Prewitt
Scharr


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References

◎ Paper

Sobel, Irwin, and G. Feldman. "An Isotropic 3x3 Image Gradient Operator for Image Processing." Mach. Vis. Three–Dimens. Scenes June (1968): 376-379.

https://www.researchgate.net/publication/239398674_An_Isotropic_3x3_Image_Gradient_Operator/link/557e06f508aeea18b777c389/download

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Sobel operator - Wikipedia
https://en.wikipedia.org/wiki/Sobel_operator 

# 綜述
# 107 claps
What is Edge Detection Convolutional Neural Network’s (CNN’s) edge detection
https://medium.com/@ayeshmanthaperera/edge-detection-7e09bb3531d9

# 97 claps
Understanding Edge Detection (Sobel Operator) - Data Driven Investor - Medium
https://medium.com/datadriveninvestor/understanding-edge-detection-sobel-operator-2aada303b900 

How Image Edge Detection Works - Aryaman Sharda - Medium
https://medium.com/@aryamansharda/how-image-edge-detection-works-b759baac01e2 

# 52 claps
Canny Edge Detection Method - Aydin Ayanzadeh - Medium
https://medium.com/@a.ayanzadeh/canny-edge-detection-method-23a23b282ac0 

# 299 claps
Canny Edge Detection Step by Step in Python — Computer Vision
https://towardsdatascience.com/canny-edge-detection-step-by-step-in-python-computer-vision-b49c3a2d8123

Edge detection with the Sobel operator in Ruby – saush
https://blog.saush.com/2011/04/20/edge-detection-with-the-sobel-operator-in-ruby/ 

Sobel edge detector with scikit-image - Hands-On Image Processing with Python [Book]
https://www.oreilly.com/library/view/hands-on-image-processing/9781789343731/0d1fdc9a-8833-43d2-9e28-f89185793e7f.xhtml

// First-order Derivative kernels for Edge Detection _ TheAILearner
https://theailearner.com/2019/05/24/first-order-derivative-kernels-for-edge-detection/

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討論索伯算子 Sobel 的 Convolution 問題 - Rifur Ni - Medium
https://medium.com/@Rifur/%E8%A8%8E%E8%AB%96%E7%B4%A2%E4%BC%AF%E7%AE%97%E5%AD%90-sobel-%E7%9A%84-convolution-%E5%95%8F%E9%A1%8C-e986ce026e72 

OPENCV – Edge detection邊緣偵測 – CH.Tseng
https://chtseng.wordpress.com/2016/12/05/opencv-edge-detection%E9%82%8A%E7%B7%A3%E5%81%B5%E6%B8%AC/

OpenCV – more on edge detection – CH.Tseng
https://chtseng.wordpress.com/2016/12/05/opencv-more-on-edge-detection/

邊界偵測 (Edge Detection) – Ya-Ti's Blog
https://blog.ya-ti.nctu.me/2018/07/edge-detection/?i=1 

Edge Detection Algorithm using OpenCV.md · GitHub
https://gist.github.com/MarcWang/52bd9e0dea9e168a010c7e83d7f2b3b0 

You are entering my brain......  Edge Detection--Sobel Filter
http://tkdstkdstkds.blogspot.com/2012/02/edge-detection-sobel-filter.html  

Homework Show @ IPC  HW7 - 邊緣偵測 (Sobel operator)。
http://hwshow-ipc.blogspot.com/2010/01/hw7-sobel-operator.html 

CS362_1001545  [HW3] Sobel Edge Detection
http://yzu1022cs362s1001545.blogspot.com/2014/03/hw3-sobel-edge-detection.html 

Edge detection by Sobel operator - Rajeev Ranjan - Medium
https://medium.com/@rajeevranjan_47004/edge-detection-by-sobel-operator-ba9c90b001c0

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代碼實作

# 312 claps
Comparing Edge Detection Methods - Nika Tsankashvili - Medium
https://medium.com/@nikatsanka/comparing-edge-detection-methods-638a2919476e

Sobel edge detector _ Martin
https://cmmlin2016.wordpress.com/2013/11/18/sobel-edge-detector/