writing my own sobel filter convolution - something is wrong

Posted on 16th Feb 2014 07:03 pm by admin

I am trying to keep it very simple, I cant see anything wrong with my logic, could anybody help point me to the right direction?!!


Code: { int Shorizontal[] = {-1, 0, 1, -2, 0, 2, -1, 0, 1}; int Svertical[] = {1, 2, 1, 0, 0, 0, -1, -2, -1}; for (int x = 0; x < image.dimx(); x++) for (int y = 0; y < image.dimy(); y++) for (int c = 0; c < 3; c++) // loop through colour channels { int counter = 0; float tempH = 0; float tempV = 0; for (int a = -1; a <= 1; a++) for (int b = -1; b <= 1; b++) if (x + a >= 0 && x + a <= image.dimx() && y + b >= 0 && y + b <= image.dimy()) { tempH += image(x + a,y + b,0, c) * Shorizontal[counter]; tempV += image(x + a,y + b,0, c) * Svertical[counter]; counter++; } image(x,y,0,c) = sqrt(pow(tempH,2) + pow(tempV,2)); } }

Your Answer:

Login to answer

Other forums

Connection Timeout
I'm using xmii 12.0

I'm calling a transaction as a web service from a windows application

filesize() returns 0
I have a socket program that runs in an infinite loop, listening for connections, in this socket I h

script is pulling more then they have....
I have this script for my game where they can change there race. This will cost them 2,500 points. H

Can't find a decent web analytics!!!
I've downloaded and installed Piwik. It's location detection based on IP addresses is fairly inaccur

foreach loop, assistance request
I would like some guidance on the usage of foreach as I try to parse through a large database and wh

I need help on this PHP code
Hi everybody, I made some kind of mistake while editing the code below. As you see, at the 3 row my

Using Windows message as a Handle
Hi,

I am writing one of my first multithreaded programs.

In one of the thread,

How to get exact 3 moths post date from today date using javascript
How to get exact 3 moths post date from today date using javascript
Please help

Significance of BPM
Hi Experts,
I am a novice in BPM , I just want to know how BPM as permenant department is

I got my hosting suspended XD
So I saw this challenge a day or so ago

http://www.programming-challenges.com/pg.php?page=dow