Top "Edge-detection" questions

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

Edge Detection method better than Canny Edge detection

Is there an Edge Detection Method that performs significantly better than the Canny Edge Detector ??

image-processing computer-vision edge-detection
How to detect the Sun from the space sky in OpenCv?

I need to detect the Sun from the space sky. These are examples of the input images: I've got such …

c++ opencv edge-detection
Canny Edge Image - Noise removal

I have a Canny edge detected image of a ball (see link below) which contains a lot of noisy edges. …

image-processing edge-detection
Extract single line contours from Canny edges

I'd like to extract the contours of an image, expressed as a sequence of point coordinates. With Canny I'm able …

opencv computer-vision contour edge-detection feature-extraction
Edge detection for image stored in matrix

I represent images in the form of 2-D arrays. I have this picture: How can I get the pixels that …

python algorithm numpy edge-detection
Adjusting the threshold in Canny edge algorithm

I wanted to try my hand at text recognition, so i've used opencv to trace out the edges and c++ …

c++ algorithm image-processing opencv edge-detection
How can I use the latest version of Imagemagick on Heroku?

Heroku Cedar-14 stack currently runs a version of ImageMagick (6.7.7-10) that is nearly a year old: Running `identify -version` attached …

ruby-on-rails heroku imagemagick edge-detection
DETECT the Edge of a Document in iPhoneSDK

I am looking something like attached image, How can I implement this in iPhoneSDK. Can anybody suggest me some open …

iphone ios4 image-processing edge-detection object-detection
Detecting edges of a card with rounded corners

Hi currently i am working on an OCR reading app where i have successfully able to capture the card image …

ios opencv uiimage avfoundation edge-detection
How to extract a specific section of an image using OpenCV in Python?

I am trying to extract a portion of an image by performing Canny edge detection. I have succesfully created a …

python numpy opencv opencv3.0 edge-detection