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DGM


Last seen: Today Actif depuis 2015

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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Apply colormap coloring to a particular contour to indicate imaginary component
It can be done, but not with contour() or plot(). % some fake data x = linspace(-1,1,100); y = x.'; z = x.*y + sqrt(x) - sqr...

5 jours il y a | 3

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iterating array over for loop
Two things. 1: you're breaking out of the loop immediately by using the break keyword. 2: you're not addressing the output as ...

9 jours il y a | 0

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Image Selection in freeform
Use drawfreehand() to create an ROI object interactively. Once done, use createMask() to convert the ROI object into a logical ...

10 jours il y a | 1

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Randomly position an ellipse and create a cutout
Depending on what you mean by "crop", this may suffice: https://www.mathworks.com/matlabcentral/answers/314089-how-can-i-apply-...

14 jours il y a | 0

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Image processing for determining endpoints on a line
bwskel() will almost always leave branches on the skeleton. You have to get rid of them. While you can use the minbranchlength...

21 jours il y a | 1

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remove data from fig file after plotting
xlim([17.38 33]) % ?? What's that have to do with "removing data after plotting" though?

25 jours il y a | 0

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which colormap I can chose to draw these figures?
Attached are colormap generators that attempts to make something close to the given colormaps. It's only a blind approximation,...

26 jours il y a | 0

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Using Tiff function to save tiff files
There are at least two ways of doing this. You can try to just cram everything into a single image. As far as I can tell, I ...

26 jours il y a | 1

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How do I remove the Specular reflections in gray scale image as given in this article snippet?
Well forget about trying to use imregionalmax() on that. It looks like a captured frame of interlaced video that's been saved a...

29 jours il y a | 0

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How do I extract data from the graph in this image?
The more I look at this graph, the worse it gets. At least it's a clean PNG, but it's small for what's represented, and there a...

environ un mois il y a | 1

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Is there a way to make my picture RGB again? Trying to test hamming code
Well, here's one example. It might not be the most practical sort of thing, but it's probably fairly instructive. I imagine th...

environ un mois il y a | 0

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Is it possible to create a 3-D surface plot with black edges and color shading on the faces that corresponds to the data points, instead of solid color faces?
Simply do: sa.FaceColor = 'interp'; That will make the face color graduated, while leaving the edge lines black.

environ 2 mois il y a | 0

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How to recify this error in daughman's rubber sheet model matlab code? : Error using * MTIMES (*) is not fully supported for integer classes.
Well, I have no idea how you're calling this function, but the parameters you're passing are integer-class, when they shouldn't ...

environ 2 mois il y a | 0

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how to overlay these two data sets in one image with two different colorbars?
I'm going to just put both colorbars on one side so that they don't get in the way of axis labels. It's just easier. load('lol...

environ 2 mois il y a | 0

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What do I need to do when I get this message "Cannot display summaries of variables with more than 524288 elements." ?
What you do depends on what the array is and what exactly you're trying to look at. The browser doesn't support display of larg...

environ 2 mois il y a | 0

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error while using imfilter function in matlab
The name of the filter variable is "filter", not "filt". result{i} = imfilter(temp_img, filt, 'replicate', 'conv'); filt() i...

environ 2 mois il y a | 0

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Why the error?
The error is (almost) entirely a consequence of the difference in the way you're handling the region boundaries. When the image...

environ 2 mois il y a | 2

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convert RGB to YIQ and HSV values without function rgb2ntsc and rgb2hsv ([30,80,30]) search with matlab coding
First off, you're asking for something you can't get. https://www.mathworks.com/matlabcentral/answers/38787-what-can-be-program...

environ 2 mois il y a | 0

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Unable to perform assignment because the size of the left side is 588-by-3603 and the size of the right side is 588-by-719-by-3 error
The actual solution is probably to delete AreaUnderCurve() and actually pay attention to what you're doing with your data. Wh...

environ 2 mois il y a | 1

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mapping image using pixel values
This question is one in a long set of unclear questions which together likely form an XY problem. This is a rough summary of a ...

environ 2 mois il y a | 0

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Matlab code of shape
So the inputs are: the chord length L (they're all equal) one of the interior angle pairs I choose to assume that the given a...

environ 2 mois il y a | 0

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How can I deform an image to fit a shape, but keep the same pixel values?
For the moment I'm going to assume that the input and output polygons have the same number of vertices or can be made to have th...

environ 2 mois il y a | 0

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Is there any way to convert an image from RGB to CIELUV colorspace? Or read an image in CIELUV colorspace? For details about CIELUV colorspace refer : https://en.wikipedia.org/wiki/CIELUV
There are tools on the File Exchange which can do both transformations. Pascal Getreuer's colorspace() offers conversions in ...

environ 2 mois il y a | 0

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assigning values in color bar
Why not just scale it appropriately instead of trying to fake it? Don't need to use surf either. % you have a single-channel i...

2 mois il y a | 0

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Checking if two handle objects are identical using 'isequal' and '=='
I don't know if there's a generalized canonical way to compare the similarity of graphics objects, but they're going to differ. ...

2 mois il y a | 1

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Issue with imresize, resizeParseInputs
See the comments. It ran without errors, but I don't know if the output is right or if I'm using it correctly. %blend the lapl...

2 mois il y a | 0

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Brace indexing into the result of a function call is not supported
Hm. I'm going to guess on this one. function blendedPyramid = blendLaplacianPyramids(pyramids) % the variable is 'pyramids' ...

2 mois il y a | 0

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How do I change a black and white grating to red and green?
I'm going to do this with MIMT tools because I'm lazy, and that's why convenient tools exist. Assume we have a single-channel g...

2 mois il y a | 0

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Vertical lines artifacts while using ShapeInserter of Vision toolbox ?
See also: https://www.mathworks.com/matlabcentral/answers/411443-problem-with-insertshape It's probably an earlier version th...

2 mois il y a | 0

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how to delete value of hsv and convert hsv to gray?
This is a nonsense question. In one sentence, your goal is to preserve color information only and delete brightness information...

2 mois il y a | 0

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