George Pavlides | More or less about me and everything that I learn, or hear, or think and find interesting to note.

Virtual world launched

virtualworlds website
It has been many years working on digitization, reconstruction and virtual world applications; tested and used various techniques covering almost all aspects in the digital recording workflow. In the recent past years our team has been successfully engaged in a very productive workflow regarding digitization and reconstruction in 3D. Specific [...]

Geometric transformation of images (M...

lena_result_2
A straightforward approach to do geometric image transformations using MATLAB is to take advantage of the imtransform function available. First the image is supposed to be within a ‘unity’ rectangle and initial transformation conditions are defined accordingly:udata = [0 1]; vdata = [0 1]; fill_color = 128; org_rect = [0 0; [...]

Cancel automated (pre-approved) PayPa...

paypal_logo
I have already kept a note on the procedures needed to cancel a pre-approved or automated PayPal payment in a post regarding Skype but this is a more general problem and I need to remember… Walk through the menus as follows: My account > Profile > My Money > My preapproved payments > Update Here are all the billing agreements that third [...]

The Game of Life (another MATLAB impl...

fig_final
Recently I read an interesting book “The Grand Design” by Stephen Hawking and Leonard Mlodinow. Somewhere at the end of the book there was a reference to the well known game of life by John Conway (1970). Although I knew it was implemented by various researchers and is already available in MATLAB with a demo function named `life`, [...]

How to detect the maximum pixel dista...

circles
In a recently posted question @StackOverflow a user asked how to find the maximum Euclidean distance in a binary image produced by Canny edge detection using MATLAB. The original post is here. I report my response here just for archival purposes. Provided that you have a binary edge image, you need to think of white pixels as points in a 2D s [...]

How to detect a christmas tree in an ...

Christmas tree detection project
Just a few days ago I run into a very interesting image processing challenge at StackOverflow. The challenge focused on the detection of a christmas tree in an image (see here for more info). Since I had a some free time I though I could give it a try… The rules in this challenge were plain and simple and included a dataset of 6 images [...]

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(August 22, 2013 @ 03:05)