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

PHP not creating file.
Its supposed to create a .ini file in the /scriptfiles/users/ with the name they entered into the fi

natcasesort works on one server but not on another
Hi

I have a problem that I was hoping that someone can help me with.

I'm trying to use

preg_match logical error
Code: <?php
$s = file_get_contents("page.html");
preg_match('/<div cla

how can we add data from dynamic fields to mysql db in php
i have a script which i found on the internet. i modify that script according to my needs. what is i

Cursor statement failed with errors
Following statement failed with the errors.

cursor proj_cursor1 is (select projectID from

Unable to customise toolbar in FCK
TimeZoneOffset
Hello,

Please i need your help. I have a system that users can use to punch in and out. This

MS Exchange 2007 integration with ECC 6.0
Hello Experts,
We have ECC 6.0 and MS Exchange 2007. We need to integrate ECC 6 and MS Excha

please hep to get values from a table row
can anyone tel me how I can select and get data from one row by pressing an Edit button in that row

Session login issue
I'm wondering how to fix a problem I'm having with a session-based login system

Say I go to h