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

Deleting pointers froms vector?
Hi. I have a vector filled with pointers and I want to delete the pointers. I could do a loop and do

BIG file upload!
Hey guys!

I'm trying to upload a file, it works well with smaller files but with 60mb+, I get

Keep newlines from textarea?..
I'm creating a simple encoding program, and what I want it to do is retain the newlines, as echoing

noob cURL help
I have a pretty basic form that I need to cURL post to a file in my includes folder (includes/login.

php is not recognized as an internal or external command
Hello,

I am trying to bake the code in CakePHP through my console.
I have changed my Path

Table trouble
i have been reading the forum for a few weeks and decided to join. i like the format and the advice

upload only text files
hi guys i want to upload only text like like (pdf,note pad and ofiice files) so can any one please t

extract content from a website
i have written a code that will grab the content from the index page..
i would like to know how c

Members Only
Hi all, for my website i have a members area only which on members can veiw, but at the moment anyon

help with calculations on a flat text file
hello,
I have this code below that is attached to a flat file like this:
Email:LastName:FirstN