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Insanity

Member

From: Douchebag Island

Joined: 2015-03-07

Posts: 1,123

Java Wizards GET TF IN HERE

Anyone know how to create an Edge Detection algorithm in Java? I have to use thresholding to detect coins on an image that has been loaded onto a JFrame. I already have a way to turn a BufferedImage into grayscale, but I have no clue how to go about detecting coins on that BufferedImage.

This isn't EE related, posting here though cuz I figure a bunch of you know how to code

pls help

EDIT:

I'll pay 200 gems to someone who can do this

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Maverick: Started up on a 6, when he pulled from the clouds, and then I moved in above him.
Charlie: Well, if you were directly above him, how could you see him?
Maverick: Because I was inverted.

Anatoly

Guest

Re: Java Wizards GET TF IN HERE

Give me 200 gems; ill give you the answer in some years after reading tutorials.

Swarth100

Member

Joined: 2015-07-18

Posts: 305

Re: Java Wizards GET TF IN HERE

Have you already checked this link?

http://stackoverflow.com/questions/2935 … thin-image

LukeM

Member

From: England

Joined: 2016-06-03

Posts: 3,009

Website

Re: Java Wizards GET TF IN HERE

This is quite a simple explanation but it might help:
https://youtu.be/sRFM5IEqR2
No idea why, but yesterday I had YouTube open and the auto play thing started playing that video XD

It basically says you need to convert the image to grayscale and blur it slightly, then find the size and direction of the gradient of each pixel, then you find the lines of maximum gradient, then you apply a threshold where to start an edge, you need a high ish gradient, but once it's started, you continue until a much lower gradient

Zumza

Member

From: root

Joined: 2015-02-17

Posts: 4,656

Re: Java Wizards GET TF IN HERE

I've been banned lately. Contact me on PM if you haven't found a solution yet.

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