Matlab

how to extract a region from the image with an interactive selection
hello, i have an image I and i want to select a region, possibly the facial part, and extract it and use as a correlation filter for the next frames of a video..roipoly applies a similar selection procedure but does not fit into my needs in this situation..any idea? ... 6 May 2008 23:26

Bloated files when saving large variables to .mat files with
> As you are using compression it is quite expected that the file size is less when u save all variables at once. It suggests that all your variables are highly correlated. The compression algorithm works well due to the inter variable redundancy. Hi Rajeshi, Thank you for your response. I su... 6 May 2008 23:26

Use memset to initialize floats and doubles to 0.0
The default value of "Use memset to initialize floats and doubles to 0.0" (Simulink Model >> Simulation >> configuration parameters >> Optimization) property is mentioned as "off" in help docs. But the GUI and command-line shows the default as "on". You can use the following to see that on command-line get... 6 May 2008 23:26

How to Change the specified pixel value of an image?
Here are 2 images. Original and Processed. Original: http://bp2.blogger.com/_dY9PPdeLapU/SCAXQJWgxYI/AAAAAAAAAKI/ oA9Pewda5rA/s320/original.bmp Processed: http://bp0.blogger.com/_dY9PPdeLapU/SCAYApWgxZI/AAAAAAAAAKQ/ yrSxCKYLlIs/s320/processed.bmp I want to check the white pixels on the Processed Image ag... 6 May 2008 23:26

Bloated files when saving large variables to .mat files with -append
rajesh schreef: On May 6, 1:06 pm, Javier Martinez <jmarti...(a)acfr.usyd.edu.au> wrote: Hello all, I am working with a series of variables 100000x130 in size. These variables are processed seperately and saved individually to a common .mat file using the save function with the append option. N... 6 May 2008 23:26

Optimization of sampling scheme
Dear all, I am not an expert in optimization and hence I'd really appreciate your help with following problem. Consider n random sampling locations in 2-D. E.g. n = 100; x = rand(n,2); The pairwise euclidean distance between all sampling points is (in case you have the Stats toolbox) d = pdist(x); ... 7 May 2008 09:20

a question about angle in solve
I want to solve some questions in Matlab7.0 like solve('angle(1-1/(i*x+0.5))=pi/2','x') but ???Error using ==>solve 'angle(1-1/(i*x+0.5))=pi/2' is not a valid expression or equation. why angle() can not work in solve(), but abs() does. How can I do if I want to solve this question, thanks. ... 6 May 2008 23:26

Bloated files when saving large variables to .mat files with -append
On May 6, 1:06 pm, Javier Martinez <jmarti...(a)acfr.usyd.edu.au> wrote: Hello all, I am working with a series of variables 100000x130 in size. These variables are processed seperately and saved individually to a common .mat file using the save function with the append option. Now, when a series of nine ... 6 May 2008 23:26

Bloated files when saving large variables to .mat files with-append
Hello all, I am working with a series of variables 100000x130 in size. These variables are processed seperately and saved individually to a common .mat file using the save function with the append option. Now, when a series of nine variables are saved individually in this manner, the resulting .mat file is appro... 6 May 2008 23:26

How to build a standalone application ?
besides using the Matlab compiler, is there other ways to create a standalone application from m-file ? ... 6 May 2008 23:26