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Topic: How to find the area for two overlapped pattern?
Replies: 6   Last Post: May 3, 2012 6:14 PM

 Messages: [ Previous | Next ]
 ImageAnalyst Posts: 12,875 Registered: 12/26/06
Re: How to find the area for two overlapped pattern?
Posted: May 3, 2012 4:30 PM

On May 3, 2:39 am, "Sheng Yuan" <shyuan1...@gmail.com> wrote:
> Thanks for the information. I thought what was described in the problem is a Convolution operation?  Need to write the check-board patterns  into a matrix (maybe a 60 X 48 matrix? ) with 0s (black square) and 1s (white square), and somehow write the circle as a matrix also (all element=1 inside, not sure how this can be done properly).
>
> After the matrix is built, as the circle is drag along the check-board by 640 steps, the transmissive area of the check-board fall into the 3mm circle will the convolution of the two matrix?
>
> Need help on how to build the matrix and get a [640 X 480] matrix as the out put though.

=====================================================

The Image Processing Toolbox has a checkerboard function. I have a
demo that uses that plus a method using repmat. Let me know if you
need me to post the demo.
ImageAnalyst

Date Subject Author
5/2/12 Sheng Yuan
5/3/12 Bruno Luong
5/3/12 Sheng Yuan
5/3/12 Sheng Yuan
5/3/12 ImageAnalyst
5/3/12 Sheng Yuan
5/3/12 ImageAnalyst