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?!!


Did you know?Explore Trending and Topic pages for more stories like this.
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)); } }
No comments posted yet

Your Answer:

Login to answer
291 Like 22 Dislike
Previous forums Next forums
Other forums

Parse XML
Good day,

I use oempro software and try to parse XMLReturn but it's not working for me, simpl

gmdate() - want 1 hr before time
Hi,
I am using php gmdate().
Now I am entering all dates in my dbase using gmdate("Y-m-d

square instead of number
Hello
I do not know why but this code seems to work fine only in my xampp local insallation but n

PHP / MySQL Associative Multidimensional Array:
Hello.

I have data in a MySQL Table that adheres to the below: (note, no index, could add if

The control with ID 'ace' requires a ScriptManager on the page
I'm trying to add a simple AlwaysVisibleControlExtender to my page, but it's not working. I get the

need good snippet manager
Hi. as i am coding and learning more, it is becoming difficult to manage code snippets. how you mana

Feed Maker
Hi all.
First of all I must say I am not a php developer so I am afraid I don't know much about i

How to load mysql (and other) extensions into PHP
How to load mysql (and other) extensions into PHP PHP Development forum discussing coding practices,

how to remove in php string display
My code is

$message="We're looking at developing our website.";

$body= "

Get to know your fellow coder
I think it's time we got personal around here. There's a lot of code swapping and a few members kno

Sign up to write
Sign up now if you have flare of writing..
Login   |   Register
Follow Us
Indyaspeak @ Facebook Indyaspeak @ Twitter Indyaspeak @ Pinterest RSS



Play Free Quiz and Win Cash