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

PHP5 - AJAX help
I've been following the tutorial on w2schools (http://www.w3schools.com/php/php_ajax_database.asp) a

ASP.NET Validation Event Cycle
Hi,
I have asp button as follow:

xApp Analytics in BI 7.0
Dear all,

I am trying to implement xApp Analytics in BI 7.0. After I installed the analyt

send message to the java application
Oracle 10g with Windows platform.

I have a java application that periodically pings the d

please help me in this update statment
hi every one

if I have table and this data in it

id name
10

ScriptManager History and Opera Issue
I am having an issue in opera with the ScriptManager. I have a ScriptManager on a page with history

get multiple rows
Hi I want to get multiple rows from a db

I am using this for the db query
Code: public

Displaying data from MySql a different way
Hi all,
I'm pretty new to php and MySql and have hit a problem.

I am able to display data

XML Grouping
I'm using xml_parse_into_struct to get all my elements, but now I need to group them. For example, h

Getting Resource id #11 while trying to connect..
So i tried using "DEFINE" for the first time and im using the variables i defined to conne