MATLAB Answers

Translation Matrix For Image Processing Confusion

3 views (last 30 days)
Zamani Md Sani
Zamani Md Sani on 4 Jun 2020
Answered: Prabhan Purwar on 16 Jul 2020
Hi,
Im quite confuse with the matrix translation use to translate image in 3D using homogenous coordinate. In Matlab the coordinat for tx and tx is at the bottom left
whereas there are a lot of example in the internet is at on the right corner and given with a very simple example from 2D conversion as in the image.
What is the difference or is it very similar?
Thanks
Zamani

  0 Comments

Sign in to comment.

Answers (1)

Prabhan Purwar
Prabhan Purwar on 16 Jul 2020
Hi,
These two representations of Translational Transformation are pretty the same and just vary in the way matrix multiplication takes place.
%MATLAB METHOD
>> [x y 1]*[1 0 0;0 1 0;tx ty 1]
ans =
[tx + x, ty + y, 1]
%OTHER METHOD
>> [1 0 tx;0 1 ty;0 0 1]*[x;y;1]
ans =
tx + x
ty + y
1
Thanks

  0 Comments

Sign in to comment.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!