Jurgen

VU University

Active since 2012

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Reading a select number of characters from a string
If you don't want to convert to char type: extractBetween and it's brethren work on the newer string datatype.

ongeveer 5 jaar ago | 4

Question

Check if property is dependent
I'm trying to write a method that checks if the non-dependent properties of a class are initialized properly. Using ` fieldnames...

ongeveer 7 jaar ago | 1 answer | 0

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answer

Question

Concise way to compare/find multiple values
If I have a matrix of integers called A and want to find the mask corresponding to values 1 and 7, I currently do this: mask ...

ongeveer 7 jaar ago | 1 answer | 1

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answer

Question

Extend scope of variables to other local functions
I have a function that uses a few helper functions. I'd like these helper functions to have access to variables without: * pa...

meer dan 8 jaar ago | 1 answer | 0

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answer

Question

Select visual studio compiler with mex
I have visual studio 2015 (community) installed. It can compile C++ fine. Do I still need the Windows SDK to use mex, or is ther...

meer dan 8 jaar ago | 1 answer | 0

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Convert binary ROI to polygon
I have a binary image with a concave polygon drawn in a paint application. Using find() I get a set of points, but they aren't o...

bijna 9 jaar ago | 3 answers | 0

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Answered
How to divide a matrix into smaller matrices
A cell type can hold several matrices, so splitting your matrix should output a cell. Mat2cell has syntax that let's you carve u...

bijna 10 jaar ago | 0

Answered
problem in image resizing
Have you tried .bmp? I think that does not use compression. It should be slightly greater than 100KB due to the header.

bijna 12 jaar ago | 0

| accepted

Answered
How can I normalize data between 0 and 1 ? I want to use logsig...
NDATA = mat2gray(DATA);

bijna 12 jaar ago | 17

Answered
how to choose the value?
I suggest you concatenate the numerical input l1 with the string 'bus'. Then display the content with display(). E.g. X = [...

bijna 12 jaar ago | 0

Answered
How do I change the image displayed in the axes of a gui?
Agree with Image Analyst, you can use the same command as with the first button to display. Alternatively changing the CData pro...

bijna 12 jaar ago | 1

Submitted

Imsplit
Split image or matrix into subparts using simple syntax.

bijna 12 jaar ago | 2 downloads |

Submitted

Colormix
Combine basic colors with string syntax to create any RGB color.

bijna 12 jaar ago | 1 download |

Answered
convert matrix to rgb
The FEX has mat2im and real2rgb. Can recommend both! <http://www.mathworks.nl/matlabcentral/fileexchange/23342-real2rgb-color...

bijna 12 jaar ago | 1

Answered
Endometrial cancer detection using Image processing
Since you don't know where the cells are, cropping the images could mean deleting the areas with the cancer cells. So it is your...

bijna 12 jaar ago | 0

| accepted

Submitted

Valcolor
Apply color CLR to colormap entry pertaining to value VAL. Either scaled or indexed figure.

bijna 12 jaar ago | 1 download |

Answered
Create .mat similar to MRI for image processing
3D display on a 2D screen may not be the best option. Most MRI analysis programs just show slices from several directions. I ...

bijna 12 jaar ago | 0

Answered
how can i calculate brightness,contrast,hue and saturation of a image?
Assuming its an rgb image, you can do rgb2hsv to find the hue and saturation of pixels. Value is similar to brightness, but you ...

bijna 12 jaar ago | 0

Answered
Resizing two images to the same pixel dimensions without aspect ratio distortion
Your question is: Can I change the aspect ratio of A to fit that of B without changing the aspect ratio of A? It makes no sense!...

ongeveer 12 jaar ago | 0

Submitted

Mat2gray variant with dimension option
Normalizes sections of an N-D matrix divided along DIM to the 0.0-1.0 range.

ongeveer 12 jaar ago | 4 downloads |

Answered
How to use an absolute scale with colormaps
Yes, just adjust the CLim property of the axes to the desired range. e.g. caxis([0 45]) will map the colors to 0-45 range.

ongeveer 12 jaar ago | 0

| accepted

Answered
To tilt image backwards
Instead of doing it manually, use a for loop, compare with 'correct' reference image (e.g. sum of squared differences) and selec...

ongeveer 12 jaar ago | 0

Answered
how to detect noise in an image?
You're not the first: <http://www.mathworks.com/matlabcentral/answers/52882-image-noise-estimation-image-processing> <http...

ongeveer 12 jaar ago | 1

Answered
Multiple plot handles to the same figure
Also, maybe figsplit and figmerge may help. <http://www.mathworks.com/matlabcentral/fileexchange/31737-splitmerge-matlab-figu...

ongeveer 12 jaar ago | 0

Submitted

Zerocolor
Set colormap entry for zero values to specified RGB color

ongeveer 12 jaar ago | 2 downloads |

Answered
Can someone help me with my image processing?
I think your problem is similar to a recent post by Steve Eddins: http://blogs.mathworks.com/steve/2012/12/18/counting-object...

ongeveer 12 jaar ago | 0

Answered
Image Transformation using Parallel Processing / GPU
Maybe this helps: http://www.mathworks.nl/discovery/matlab-gpu.html

ongeveer 12 jaar ago | 0

Question

List all toolbox functions
Ive looked around but only found depfun() and which(). But is there a command that lists all functions in a toolbox (excluding d...

ongeveer 12 jaar ago | 2 answers | 1

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answers

Answered
DO I need Image processing tool box to upload image into GUI
I think this should work? I = imread('file_on_path.jpg') imagesc(I);

ongeveer 12 jaar ago | 0

Solved

Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

ongeveer 12 jaar ago

Jurgen

VU University

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