Beantwortet
Converting a color image into a set of data
I've posted a number of demos on estimating data from a pseducolor image, including thermal images. You need a clean pseudocolo...

etwa 2 Monate vor | 0

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uiimage introduces artifacts? How to fix?
Interesting that this had already been reported before I reported it as a bug. The reason for these artifacts is simple. When...

2 Monate vor | 2

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Making an X ray image out of x, y, z coordinates ERROR
The data probably isn't being picked up by textscan() because of the way the delimiter is being specified. If there aren't othe...

2 Monate vor | 0

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How to transfer color and texture of an image to another image?
There are no MATLAB tools that will do good blind transfer of color themes, let alone textures. There are examples of technical...

2 Monate vor | 0

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How do I eliminate (minimize) display quantization with imshow?
I don't really know why the renderer would change it that significantly, but maybe it depends on settings or drivers I don't hav...

2 Monate vor | 1

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please explain the function of each command used in this code. These commands are part of allan variance code.
zeros() numel() sum() sqrt() https://www.mathworks.com/help/matlab/matlab_prog/matlab-operators-and-special-characters.html ...

2 Monate vor | 1

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Fill confidence band hexadecimal color
Didn't recall that working either. X = [0 0 1 1]; Y = [0 1 1 0]; fill(X,Y,'','facecolor','#7E2F8E');

2 Monate vor | 0

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How to calculate standard deviation from ROI of image after thresholding?
You have the pixel values, so you can just use those. % a grayscale image inpict = imread('cameraman.tif'); % an antialiase...

2 Monate vor | 0

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How can i change the font size of XTick and YTick (x axis and y axis) in histogram of a image?
Other than manual editing, none of these answers work as simply as suggested. The reason is that imhist() creates two axes obje...

2 Monate vor | 0

Beantwortet
A problem in using imhist to display histogram of indexed image
This is a bug that's been part of imhist() for a very long time. When fed an integer-class indexed image, the colorbar will be ...

2 Monate vor | 0

Beantwortet
Make only the highest values of grayscale image transparent
I'm going to assume that the goal is to combine two images of the same page geometry and then save the result. If the end goal ...

3 Monate vor | 0

Beantwortet
Matrix of fading colors
Loops aren't needed. % don't embed parameters into the code outsize = [256 256]; % [y x] % i'm assuming we live prior to R2...

3 Monate vor | 0

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Reading image into 16 bit signed int
There's no elegant and succinct way of doing this with base tools alone, considering that you'll potentially need to support mul...

3 Monate vor | 0

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how to convert a monochrome image of depth 24 bits into a monochrome image of depth 8 bits ?
Here's a more comprehensive example which should handle both unsigned and signed integers. Attached are two demo images. One i...

3 Monate vor | 0

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How can I save a 32 bit image (uint32) as a tiff?
Here's a simple demo that should demonstrate writing odd numeric classes to a TIFF. This supports 8,16, and 32 bit signed and u...

3 Monate vor | 0

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Normalizing by means of zero-mean
I'm going to stick this here and close the duplicate threads. What's missing from this form of the question is that the input i...

3 Monate vor | 0

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How to find a polygon in an image
This is largely assembled from existing examples. I'm sure we can find a way to break it, but this image is pretty forgiving. ...

3 Monate vor | 0

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Imfuse 'blend' issues
Like most cases, I don't see the point of using imfuse() here. If you're treating the images as if they're binarized, make sure...

3 Monate vor | 0

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Bluewhitered function in tiledlayout environment
Unlike other map generators, bluewhitered() depends on the caxis of the current axes. You need to generate the map after you se...

3 Monate vor | 1

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Beantwortet
How can i change ppm image resolution when I using Imread?
Good gravy. I finally figured out what you're doing. You're writing your PPM files using 'maxvalue' set to 1023. This is wh...

3 Monate vor | 2

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error
We know the following: You get a warning that a specific user-created (or downloaded) filename is preventing the use of a built...

3 Monate vor | 0

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how to get the pixel value of histogram?
You have the bin values. You know which bins you want. Why are you zeroing the histogram counts instead of changing the image?...

3 Monate vor | 0

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Make an image darker with overlay of another image
If your images are in standard scale (i.e. correctly scaled for their class), then I don't see why you'd be using imagesc() to d...

3 Monate vor | 0

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Coor image enhancement in spatial domain
"Enhance" is shorthand for "read my mind and do whatever it is that I want but haven't spent enough thought to formally conceive...

3 Monate vor | 0

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Drag histogram to adjust contrast
You're asking for a graphical image adjustment tool while simultaneously asserting that you can't use the extant ones because yo...

3 Monate vor | 0

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Poor imshow image quality
The image is being drawn into a TiledLayout with the default wide padding and tile spacing. A ton of space is being wasted. ...

3 Monate vor | 0

Frage

How to report/flag a user or a ThingSpeak channel?
When I find spammers, I often tend to check their profile to see what else needs cleaned up. Occasionally there are accounts li...

3 Monate vor | 1 Antwort | 0

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Antwort

Beantwortet
finding 4 neighbor of pixel in grayscale image.
Disregarding edges, the 4-neighbors of a pixel IM(y,x) are obviously %IM(y,x+[-1 1]) % horizontally-adjacent pair %IM(y+[-1 1]...

3 Monate vor | 0

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Input is a valid integer
Assuming the input x is a char vector from input() which represents a numeric scalar: isvalidnumber('56') % positive scalar int...

3 Monate vor | 0

Beantwortet
Unequal, custom, non-evenly spaced colorbar intervals
It can be done, but it's annoying to do. A lot of people take shortcuts and represent nonuniform intervals with uniform colorba...

3 Monate vor | 0