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

Product categories for registration
Dear all,

We are going live with the Supplier registered next week. At standard, the 'sel

unoconv doc convert to pdf code prob
PHP/5.3.1

Hi. I am trying to use this code to convert docs to .pdf utilizing unoconv. Howe

How would I convert this into code using an if statement?
ES equals exam score m equals $mean s equals $total. I already coded my mean and total so I'm not g

retrieving images from mysql database using php
So I've been trying to figure out how to store images in a mysql database, and as far as i can tell

Is there a quick way to do this?
Hi all,

I need to create a mysql table from php that goes a little something like this

Do While statement
hi guys,

This may sound trivial but im new to php and as part of an assignmenti have to const

quotes changing
hi all

in my content

opening quotes " changes to “

close qu

php slowing my site?
Hi all,

I think that one of the reasons that my site doesn't work fast is that the code is ve

Merger of 6 sister companies under one flagship company after go live
Dear Experts,
I need one help regarding Merger of sister companies of same group. currently we

Code error with Index.php
Error: Parse error: syntax error, unexpected T_STRING, expecting ',' or ';' in /home/runevid/public_