Top "Edge-detection" questions

Edge detection is a tool in computer vision used to find discontinuities (edges) in images or graphs.

Detect an object in a camera image in C#

I have an image, taken from a live webcam, and I want to be able to detect a specific object …

c# .net image-processing edge-detection
extract lines from canny edge detection

In openCV after applying canny edge detection I'd like to further process the result (show only horizontal lines, remove short …

opencv edge-detection
OpenCV: Efficient Difference-of-Gaussian

I am trying to implement difference of guassians (DoG), for a specific case of edge detection. As the name of …

image-processing opencv edge-detection
Python implementation of the laplacian of gaussian edge detection

I am looking for the equivalent implementation of the laplacian of gaussian edge detection. In matlab we use the following …

python image-processing edge-detection imagefilter laplacianofgaussian
Best value for threshold in Canny

I have an image which I want to detect edges on that. I found Canny has been used a lot ( …

opencv edge-detection
Sobel Edge Detection in Android

As part of an application that I'm developing for Android I'd like to show the user an edge-detected version of …

android image-processing edge-detection
Contour detection in MATLAB

I am trying to understand this code: d=edge(d,'canny',.6); figure, imshow(d,[]) ds = bwareaopen(d,40); figure, imshow(ds,[]) …

matlab image-processing edge-detection
What's the use of Canny before HoughLines (opencv)?

I'm new to image processing and I'm working on detecting lines in a document image. I read the theory of …

opencv edge-detection hough-transform
How to use Chamfer Matching algorithm for finding 'Similar Images'

I would like to ask for more information on how Chamfer Matching algorithm (an edge matching algorithm) can be used …

image algorithm computer-vision edge-detection
How to connect broken lines in a binary image using Python/Opencv

How can I make these lines connect at the target points? The image is a result of a skeletonization process. …

python opencv image-processing image-segmentation edge-detection