DGM

Last seen: 1 dag ago | Active since 2015

Followers: 9 Following: 0

Hi, I'm nobody. I don't belong here, but I have nothing better to do. Matlab used to be part of my work. Now it's part of my hobbies. That's pretty sad, really.

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Why does imagesc show different outputs for the same input matrix?
The problem is the ydata spacing is not uniform between the two sets. Tools like image(), imagesc(), and imshow() don't use all...

1 dag ago | 1

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Controlling colors in scatter plots
This is what I threw together, but there's probably a better way to do this; I haven't really used gscatter() for anything befo...

3 dagen ago | 0

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Big Tiff Grayscale image looks unsharp/ Grayvalue is not shown properly
It's hard to know without seeing the image. A TIFF can contain just about anything. It can be on an odd numeric scale. It can...

6 dagen ago | 0

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Answered
Are there MATLAB functions or scripts to perform boolean operations on triangulated solids?
If your solids can each be expressed as a manifold STL, then I don't see why you can't use external tools to do the job. I norm...

6 dagen ago | 0

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Finding contiguous regions of interest in a mask and calculating the mean values of those regions when the mask is applied to an array
You have a mask and a (assumed) grayscale image. Here are three ways: % a grayscale image and a logical mask of the same geome...

21 dagen ago | 1

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Can I digitized color map into contour values according to it color bar?
No, not accurately. There are a number of problems. You can try anyway. Filled contour plots are ambiguous. The only parts...

21 dagen ago | 1

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capture focus change of a figure
This is based on the examples given in the comments. I've tested it in R2015b and R2019b, so I'm assuming it would have worked ...

23 dagen ago | 0

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How to move figure window to front of all programs?
If you want the window to stay on top even if other windows are given focus, you can set that in the window manager. % you have...

24 dagen ago | 0

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image edge detection result
There are some tools for creating DXF files https://www.mathworks.com/matlabcentral/fileexchange/33884-dxflib ... but they're ...

26 dagen ago | 0

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How can the objects touching the boundary of the ROI polygon in an image be removed in Matlab?
You might want to use imclearborder(), but that's not what imclearborder() does. If you have logical masks, then: % say you ha...

ongeveer een maand ago | 0

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decoding of bitstream in image processing?
There are four possible transition states, but only three are (confusingly/incorrectly) described. Assuming the following: a 0...

ongeveer een maand ago | 0

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How to shade the intersection area between two overlay image?
JPG screenshots of the ambiguous superposition of working images are not working images. % the only given image is a screenshot...

ongeveer een maand ago | 0

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how to detect the haziness of the color image?
I wasn't going to post this, but I guess I will anyway. I went and grabbed a paper on a "haziness" metric. https://www.resea...

ongeveer een maand ago | 1

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Difference between manually-created gaussian filter and fspecial
I believe the original question was pasted incorrectly, since both examples appear to be identical (except a transpose). Neithe...

ongeveer een maand ago | 0

Answered
text image in matlab without using getframe
See: https://www.mathworks.com/matlabcentral/answers/101413-how-can-i-add-text-to-an-image-and-make-the-text-become-part-of-the...

ongeveer een maand ago | 0

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How to find the positions of pixels with 4 neighborhood in a binary pixel grid
I wouldn't bother with conditionally checking for out-of-bounds indexes in the loop. Simply pad the array and process it. Lett...

ongeveer een maand ago | 1

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Superimposing two imagesc graphs over each other.
It can be done, but unless your colormaps are very simple and non-intersecting, you can't expect to be able to visually (or even...

ongeveer 2 maanden ago | 0

Answered
Background segmentation for low contrast images
Let's start by doing what was asked. % read and prepare the image inpict = imread('image.png'); inpict = im2gray(inpict); ...

ongeveer 2 maanden ago | 0

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What can I do to make the pattern in the legend larger？I look up a lot of ways, can't solve, ask for help.Thinks!
@Star Strider pretty much reviewed what I dug through. There were changes to legend() over the years. A lot of the workarounds...

ongeveer 2 maanden ago | 0

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Answered
Filters Main Function in Image Processing
At first I thought this was an issue of misusing uint8(), but no. This is just a collage of nonsense and dead code. Most of it...

ongeveer 2 maanden ago | 0

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How to create a new image with average color of input image in the segmentation region?
There are several ways to approach this. I'm going to assume "color" implies that the image may either be RGB or grayscale. Co...

ongeveer 2 maanden ago | 0

Answered
I can't load the lighthouse.mat image
I found this one (attached), but I can't be sure if it's the right one. I have to wonder, since it seems that you're expecting ...

ongeveer 2 maanden ago | 0

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Could you please tell me how to extract the particular bits from each bit map images. and a way to store all these constructed files, The matlab program of getting 8 bits map images is as follows
imwrite() exists. For logical images, use PNG. That said, I don't know why you'd be saving the bitplanes as individual images....

ongeveer 2 maanden ago | 0

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how to store(imwrite) all the extracted coin images in Labeling labeled objects .
At first I thought the code just needed a little cleanup and debugging, but the more I looked at it, I'm thinking it's just a co...

ongeveer 2 maanden ago | 0

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Sensitivity adaptive threshold : number of pixels ?
The usage of the sensitivity parameter doesn't influence the neighborhood statistics. It's simply used as a polarity-independen...

ongeveer 2 maanden ago | 0

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How to superimpose a segment image to original image?
don't save images by taking screenshots of the figure, unless you want the result to be arbitrarily resized and padded. don't s...

ongeveer 2 maanden ago | 0

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Know which branchpoints are connected to other branchpoints?
There are probably smarter ways to do it, but: % a logical image inpict = imread('hands1-mask.png'); % the skeleton sk = b...

ongeveer 2 maanden ago | 0

Answered
Divide 3d line into segments
I don't think that what's requested is necessarily the only way to get around the problem, but consider the following image: %%...

ongeveer 2 maanden ago | 1

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Incorrect image in bwconncomp function documentation
Yep. That looks like when they edited the example to include the new cc2bw() function, they changed the variable name, but didn...

ongeveer 2 maanden ago | 0

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Some .jpeg photos can not be processed by Matlab code.
The sum of the elements will always be <=255. You're adding uint8 values, so they'll be truncated. % inputs inclusion_darknes...

ongeveer 2 maanden ago | 0

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