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.

nästan 5 år 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...

nästan 7 år 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 ...

nästan 7 år 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...

ungefär 8 år 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...

mer än 8 år ago | 1 answer | 0

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answer

Question

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...

mer än 8 år 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...

mer än 9 år 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.

mer än 11 år ago | 0

| accepted

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

mer än 11 år 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 = [...

mer än 11 år 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...

mer än 11 år ago | 1

Submitted

Imsplit
Split image or matrix into subparts using simple syntax.

mer än 11 år ago | 6 downloads |

Submitted

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

mer än 11 år 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...

mer än 11 år 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...

mer än 11 år ago | 0

| accepted

Submitted

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

mer än 11 år 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 ...

mer än 11 år 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 ...

mer än 11 år 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!...

nästan 12 år 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.

nästan 12 år ago | 2 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.

nästan 12 år 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...

nästan 12 år 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...

nästan 12 år 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...

nästan 12 år ago | 0

Submitted

Zerocolor
Set colormap entry for zero values to specified RGB color

nästan 12 år 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...

nästan 12 år ago | 0

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

nästan 12 år 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...

nästan 12 år 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);

nästan 12 år 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...

nästan 12 år ago

Jurgen

VU University

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