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I want to convert an image to dimension MxNx3 from MxNx4.
If you have a TIFF file, from which imread() returns a 4-channel image, then it's ostensibly a CMYK image. If the image is le...

2ヶ月前 | 1

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No difference between font size units 'pixels' and 'points'
I'm not sure how it's doing the scaling internally, but my guess would start here: % units per em sz = 16; % units per inc...

2ヶ月前 | 1

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Perform Google Search in Matlab
Here's a basic example. I'm pretty sure there are other ways of doing this, but the docs are a confusing maze. Last I checked,...

2ヶ月前 | 0

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Est-ce que possible de transformer image niveau de gris en image RGB? Si oui pouvez-vous me donner un code qui fait cette transformation.
See also: How to i convert grayscale to RGB? (expansion, channel deletion, hue rotation, gcolorize, imblend, colormapping) htt...

3ヶ月前 | 0

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How can I save a figure (in jpeg and pdf) from this code?
At least as of R2019b, saveas() and print() do not accept uifigure handles. The documentation suggests that's still the case, b...

3ヶ月前 | 0

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This is face morphing. Now I want to save and convert to a gif image format.
Here: % inputs A = imread('tape.png'); B = imread('strawberries.jpg'); % parameters nframes = 20; framedelay = 0.1; dit...

3ヶ月前 | 0

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Calculation of psnr value in RGB image. I have calculated psnr using this code. But the result obtained is a complex number. What should be the error??
There are plenty of problems. function PSNR = psnrgb(I,W) [m,n,p] = size(I); [h,w,q] = size(W); % obviousl...

3ヶ月前 | 0

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Exporting Graphs from Matlab App in PNG or JPG
Using gcf() won't work. The GUI handles aren't immediately visible, so calling gcf will just open and capture an empty figure. ...

3ヶ月前 | 0

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why use 0.008856 in Lab color space?
The L* function is piecewise, and epsilon is the breakpoint location in terms of relative luminance (obviously). What significa...

3ヶ月前 | 0

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Undefined function or variable 'impixelinfo'.
impixelinfo() is part of the Image Processing Toolbox

3ヶ月前 | 0

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Is it possible to use the makehdr MATLAB function with 16bit images?
This appears to have been a bug in makehdr(). As usual, it doesn't appear anywhere in bug reports, but starting somewhere aroun...

3ヶ月前 | 1

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Imported greyscale image into ImageLabeler, the main workspace shows the image as black, but Image Browser shows correct images
A few things to know: The imageBrowser app will misrepresent grayscale images by automatically rescaling their dynamic range. ...

3ヶ月前 | 0

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Can I override imshow InitialMagnification default behavior?
This can be set manually from the preferences dialog, under Image Processing Toolbox > IMSHOW Display. This can also be done ...

3ヶ月前 | 0

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I'm being told "Function definition not supported in this context. Create functions in code file."
Because this loop %*************************************** %Matlab Runge Kutta Routine - NEED HELP for count = 1:1:numsteps ...

3ヶ月前 | 0

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How can I stretch an image non-uniformly?
I'm going to start this example using MIMT tools, since generating the displacement maps would otherwise be a chore. We can wor...

3ヶ月前 | 0

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Histogram equalisation process and errors
Given the way you're trying to do 1D lookup for the final remapping transformation, your input must be integer-valued and nonzer...

3ヶ月前 | 0

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Why am I getting "Unrecognized function or variable 'fp'."?
Functions which are local to a script or local to another function are not accessible outside that scope. If you want your func...

3ヶ月前 | 0

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How does the regionprops calculate the area or the eccentricity of an object?
If you want to know how regionprops() works, open it up and look. Unlike bwarea(), regionprops() calculates the simple unweight...

3ヶ月前 | 0

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create mask (line) based on conditional (mask)
You could do it using ROI objects, but that would be terribly slow and prone to other problems. Here's an example: % dummy inp...

3ヶ月前 | 0

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Creating a symmetric tile mosaic
I'm not really sure what the question was. "the color pattern but not the shape" really doesn't make much sense, since shapes i...

3ヶ月前 | 0

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How to plot one curve and change color according to value
Also: % inputs thresh = 25; x = linspace(0,10,100); y = sin(3*x).*exp(0.5*x); % m is equivalent to (y>thresh), so it's en...

3ヶ月前 | 1

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How to export images to a single pdf file
Saving images by taking screenshots will not ensure that the original resolution is preserved. I can only imagine that preservi...

4ヶ月前 | 0

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copping grayscale image and remove any other borders or details
This example relies on the images being clean TIFF files of the expected size. It won't work on JPGs, and it won't work on the ...

4ヶ月前 | 0

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Display/highlight specific pixels of in image
I can think of a few ways to create a composite grayscale + color labeled image, but it's not really clear to me what the actual...

4ヶ月前 | 0

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How to make a specific bar to be hatched with a specific color
Here's a start x = [1,2,3,4,5]; y1 = [0.25 1.14 2.20 0.21 1.09 2.16 ; 0.48 2.26 4.40 0.42 2.20 4.34; 0.72 3.38 6.58...

4ヶ月前 | 0

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matlab work slowly when plot
There are a number of things, but the biggest problem is something easily missed: plot(r*ones(numtoplot), x(initidx:reps), '.',...

4ヶ月前 | 0

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Minimizing MATLAB windows while running?
I don't know why that reference answer got deleted, but it's still archived: https://web.archive.org/web/20150517051637/http://...

4ヶ月前 | 1

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How to change the color of shapefile in pcolor plot
If you're using geoshow(), then you should be able to set the relevant properties of the object being created (e.g. the 'color' ...

4ヶ月前 | 1

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How to calculate the percentage of each color in this image ?
I was bored and thought that the image itself was interesting. % decoding this image will produce a warning inpict = imread('i...

4ヶ月前 | 1

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How can I isolate some objects from a image?
As per usual with these assignments, the images are either microscopic, or they're low-quality JPGs or both. Besides the practi...

4ヶ月前 | 0