How to convert image into matrix
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Dear readers, i am new to matlab and want to learn how to convert or represent a picture in bmp or jpeg format in matrix form so that manipulations can be carried out on it. your suggestions will be worth for me..
suyash bhardwaj
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Answers (5)
Andreas Goser
on 27 Apr 2012
If you import a picture, it is actually a matrix, so I am not sure what do are looking for. Try:
imdata = imread('ngc6543a.jpg');
6 Comments
Soma Debnath
on 25 Aug 2016
I am very new to MATLAB,so i have no idea that how to create and load training dataset of images in matlab?please write the corresponding code also.
snehal jaipurkar
on 24 Oct 2016
Dis is really helpful. I thanks experts for their support to beginners like usus.
Omar Omari
on 31 Jan 2019
hi readers
How can I take a picture from a camera my labtop and draw it into matrices and vice versa
Thanks
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keerthana reddy
on 14 Feb 2019
Edited: DGM
on 23 Apr 2024 at 4:29
x=dicomread('i2.jpg');
imshow(i2);
2 Comments
Walter Roberson
on 9 Dec 2021
dicomread() is only for use with files stored in dicom format. There is no official file extension for dicom files but most people use .dcm or .dicom as the extension. In theory a file named with .jpg could be in dicom format instead of jpeg format, but the attached file is jpeg format not dicom format.
DGM
on 23 Apr 2024 at 4:37
As Walter said, the file is a JPG, not a DICOM file. Surprisingly, dicomread() only returns a warning and an empty array.
x = dicomread('i2.jpg');
whos x
What's been missed is that x is never actually used. When imshow() is called, it's given the filename prefix as if it's a variable, even though it is neither a variable, nor a valid filename. Obviously, the result is going to be an error.
You can read pedestrian images with imread(). You can pass either a variable or a filename to imshow().
inpict = imread('i2.jpg');
imshow(inpict)
uroog fatima
on 9 Dec 2021
i need a command to convert encrpted image to matrix.can anybody tell me.
1 Comment
Walter Roberson
on 9 Dec 2021
No, we cannot help you with that. Due to the laws of the United States, we are not permitted to discuss encryption or decryption algorithms (except under narrow circumstances that are a nuisance to go through, requiring obtaining permission in advance from a government department.)
samitha chathuranga
on 23 Apr 2024 at 1:44
How to Design a communication system that uses digital modulation and channel coding with an LDPC code to simulate the transmission of digital images over an additive white Gaussian noise (AWGN) channel.
1 Comment
DGM
on 23 Apr 2024 at 4:41
This is not an answer, so it doesn't belong here as an answer.
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