Answered
Matrix1= randn(3,4,5); Matrix1(2,:,:)是一个1行、4列、5层的三维矩阵； Matrix1(:,2,:)是一个3行、1列、5层的三维矩阵； Matrix1(:,:,2)却是一个3行、4列的二维矩阵。为什么？
This array has 3 rows, 4 columns, and 5 pages. M = randn(3,4,5); Try to visualize it in three dimensions: The colon, : ope...

2 months ago | 0

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Answered
converting and shifting photo from osciloscope
Again, this would normally be my recommendation: https://www.mathworks.com/matlabcentral/answers/1929130-searching-for-a-line-o...

2 months ago | 0

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Unable to perform assignment because the size of the left side is 1-by-1 and the size of the right side is 3-by-1.
Just use imapplymatrix() inpict = imread('peppers.png'); M = [0.393 0.769 0.189; 0.349 0.686 0.168; 0.272 0.534 0.131]; out...

2 months ago | 0

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Displaying NITFs containing JPEG2000 imagery
Try: https://www.mathworks.com/matlabcentral/fileexchange/42178-read-nitf-file-with-jpeg-2000-image-compression Given a filena...

2 months ago | 0

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reading NITF jpeg2000 compressed images
Try: https://www.mathworks.com/matlabcentral/fileexchange/42178-read-nitf-file-with-jpeg-2000-image-compression Given a filena...

2 months ago | 0

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'Mean Intensity Gradiënt'
Here's my guess % a uint8 grayscale image inpict = imread('https://www.mathworks.com/matlabcentral/answers/uploaded_files/1112...

2 months ago | 0

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graythresh dosn't work with variables other than uint8?
Like many tools in IPT, graythresh() depends on the class of the image array to know what its scale is. When you change classes...

2 months ago | 2

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darken an image issue
It is darkening the image, but the output is the wrong class. You're presuming that all images are single-channel grayscale ima...

2 months ago | 0

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i want to display multiple images in the folder using montage function, to display as all images in one rectangular frame. please any one help me
The variable fileNames is a cell array. It doesn't have a .names field. It's a list of filenames, but the filenames don't have...

2 months ago | 0

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Use imhistmatch() function on non-rectangular regions of images
There's no reason to be filling the input images with black. There's no need to use loops to do it. You already have a mask an...

2 months ago | 1

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How to plot a filled rectangle without edge?
Disregarding recent changes to options handling, this seems like it was always an adequately answerable question. It was just u...

2 months ago | 0

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How to dewarp an image?
See: fitgeotrans() imwarp() See also: https://www.mathworks.com/matlabcentral/answers/319165-how-to-correct-the-skewed-persp...

2 months ago | 0

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imwarp square in rectangular array to a rectangle in same rectangular array
I think the problem here was twofold. The input point list was flipped [y x], and the output point list was not expressed in th...

2 months ago | 0

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Why is 'Clip Limit' reversed in the 'adaptisteq' code?
In what "original CLAHE function"? IPT's adapthisteq() follows roughly the same behavior as Karel Zuiderveld's original examp...

2 months ago | 1

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split plane into set of squares
It's not clear where the bin limits actually are, but: % the data x = [1.33 1.89 9.27 9.46 9.20 7.43 6.08 5.57 6.70]; y = [8....

2 months ago | 0

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compute rotation angle of binary shape image without having primary image(image before rotation)
As far as I recall, regionprops() has never had a Rotation property, and even if it did, that wouldn't be how it's invoked. Let...

2 months ago | 0

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Answered
Segmented blur fails when adding segments on image
This is closer to how I'd do it. This is easier to use, it's not restricted to single-channel images, and it correctly handles ...

2 months ago | 0

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Colo alteration image acquisition GUI
If you want to use image() instead of imshow(), you'll need to read the synopsis. RGB inputs are rendered in truecolor, and are...

2 months ago | 0

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Numbers on the middle of colorbar in MATLAB
Assuming a discrete colorbar, % the setup z = magic(3); imagesc(z) % the values associated with each discrete level tick...

2 months ago | 1

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extracting table data from a plot picture question
It depends how the images vary and what you expect. This would normally be my recommendation: https://www.mathworks.com/matlab...

2 months ago | 2

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How to detect a circle and then lines in the circle? (Reading time off clock image)
I'm going to do this in a particular way because I want to, not because it's robust or univerally appropriate. Let's start by...

2 months ago | 0

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How do I fuse a JPEG image and a PNG with transparency.
Here's something simple for dealing with the arbitrary overlap. % inputs [FG,~,FGa] = imread('cancellation.png'); BG = imread...

2 months ago | 0

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how to generate correct logical mask of the size of shape file?
I don't have everything to run your example, but the last lines are a problem at the least.a Use numel() to return the total n...

2 months ago | 0

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recover color on image
I guess if I'm going to bump threads by fixing the formatting, I could at least try to answer them. This collection of threads ...

2 months ago | 0

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Unsharp mask amplification - limiting local contrast
I'm not sure I know what the goals are here, but I'll go. Instead of increasing global contrast, try a piecewise approach. % c...

2 months ago | 0

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how to extract connected components with similar height
There are some problems here. % the input image inpict = imread('fruittext.png'); inpict = im2gray(inpict); mask = imbinariz...

2 months ago | 0

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Difference between jpg files from Matlab and ImageMagick
I'm not familiar with whatever differences might be in the encoders, but there's one obvious thing that should be pointed out. ...

2 months ago | 0

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matlab code for face detection using RGB space color && skin color
Good gravy. This is what that section does. % using bwlabel is unnecessary unless you actually want to % explicitly use 4-...

2 months ago | 0

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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 months ago | 1

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Answered
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 months ago | 1

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