Rank: 1116 based on 81 downloads (last 30 days) and 5 files submitted
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Omer Demirkaya

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(last 30 days)
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21 Aug 2012 Screenshot Nuclear Medicine Calculator It is a simple decay calculator with most of the nuclear medicine isotopes. Author: Omer Demirkaya physics, pharmaceutical 5 0
30 Apr 2012 Screenshot Extraction of a Volume of Interest (VOI) This is a simple example of extracting a rectangular volume of interest (VOI) from a 3D image Author: Omer Demirkaya region of interest, 3d, volume of interest, voi 11 0
06 Sep 2010 Screenshot image resampling This is a simple function that resamples the image at a different pixel size Author: Omer Demirkaya image processing, pixel, function, resampling 29 4
  • 2.8
2.8 | 5 ratings
18 Aug 2007 Screenshot IMLOOK3D Displays 3D images. Author: Omer Demirkaya gui, display, annotation, image, 3d images, image processing 30 5
  • 3.75
3.8 | 4 ratings
05 May 2004 Screenshot Images with correlated pixels Simulates images with correlated pixels. Author: Omer Demirkaya image generation, image simmulation, random field, correlated pixels 6 4
  • 5.0
5.0 | 1 rating
Comments and Ratings by Omer View all
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13 May 2012 Region Growing (2D/3D grayscale) Recursive region growing algorithm for 2D/3D grayscale images with polygon and binary mask output Author: Daniel

The following two statements should be replaced.
sumSQR = meanI*meanI; % sum of squares

stdI = sqrt((sumSQR - N*meanI*meanI)/(N-1)); % update standard deviation

13 May 2012 Region Growing (2D/3D grayscale) Recursive region growing algorithm for 2D/3D grayscale images with polygon and binary mask output Author: Daniel

Daniel good work.
I have a suggestion about an efficient mean and standard deviation calculations within your while loop.

Here is the inintilization of the parameters outside the loop.

meanI = regVal; % Mean intensity
sumSQR = 0; % sum of squares
stdI = 0; % Standard deviation
N = 1; % number of pixels

And then within your while loop after the statement,

J(xv+i, yv+j, zv+k) = true;

one can add the following lines of code to progessively calculate mean and standard deviation
gI = cIM(xv+i, yv+j, zv+k);
sumSQR = sumSQR + gI*gI;
meanI = (N*meanI + gI)/(N+1); % update mean
N = N+1; % increment number of pixels
stdI = (sumSQR - N*meanI*meanI)/(N-1); % update standard deviation

Omer.

Comments and Ratings on Omer's Files View all
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01 Apr 2013 image resampling This is a simple function that resamples the image at a different pixel size Author: Omer Demirkaya vidyasagar

03 Oct 2011 IMLOOK3D Displays 3D images. Author: Omer Demirkaya Tanksale, Nachiket

I am getting two types of errors with two different cases...But I think that the software is nice and helpful. pls let me know a way out of this....

??? Error using ==> imlook3d('readOrdinaryImageSeries_Callback',gcbo,[],guidata(gcbo))
Error using ==> imread at 328
Unable to determine the file format.

??? Error using ==> imlook3d('readSingleDicomImage_Callback',gcbo,[],guidata(gcbo))
Undefined function or method 'keepfield' for input arguments of type 'struct'.

??? Error while evaluating uimenu Callback

Also, pls mention some steps to run the software.

19 Aug 2011 IMLOOK3D Displays 3D images. Author: Omer Demirkaya go

21 Mar 2011 IMLOOK3D Displays 3D images. Author: Omer Demirkaya Donna

I have slices of images I am trying to use this code to help view. I have the files saved with incrementing filenames and I load them all and place them in a cell. I tried to run the program by typing "imlook3d(Cellname)" but get an error about the min and max of a cell not being able to be computed. I also cannot get imwrite to save my cell, it gives the same error: Undefined function or method 'min' for input arguments of type 'cell'.

Could my data be in an incorrect format, or am I using this function incorrectly? If so, what is the correct method?

I hope this is the appropriate place to ask this question. Any thoughts would be greatly appreciated.

08 Nov 2010 image resampling This is a simple function that resamples the image at a different pixel size Author: Omer Demirkaya Jessop, David

Very useful. Neatly combines the two functions.

Top Tags Applied by Omer
image processing, 3d, 3d images, annotation, calculator
Files Tagged by Omer View all
Updated   File Tags Downloads
(last 30 days)
Comments Rating
21 Aug 2012 Screenshot Nuclear Medicine Calculator It is a simple decay calculator with most of the nuclear medicine isotopes. Author: Omer Demirkaya physics, pharmaceutical 5 0
30 Apr 2012 Screenshot Extraction of a Volume of Interest (VOI) This is a simple example of extracting a rectangular volume of interest (VOI) from a 3D image Author: Omer Demirkaya region of interest, 3d, volume of interest, voi 11 0
06 Sep 2010 Screenshot image resampling This is a simple function that resamples the image at a different pixel size Author: Omer Demirkaya image processing, pixel, function, resampling 29 4
  • 2.8
2.8 | 5 ratings
18 Aug 2007 Screenshot IMLOOK3D Displays 3D images. Author: Omer Demirkaya gui, display, annotation, image, 3d images, image processing 30 5
  • 3.75
3.8 | 4 ratings
05 May 2004 Screenshot Images with correlated pixels Simulates images with correlated pixels. Author: Omer Demirkaya image generation, image simmulation, random field, correlated pixels 6 4
  • 5.0
5.0 | 1 rating

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