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Domanda

Troubleshooting code for prompt and inputdlg
The following code works fine for any user input for N: N = input('Number of pieces to break into '); rowgroups =...

quasi 6 anni fa | 2 risposte | 0

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risposte

Domanda

Retrieving the original LSBs in LSB steganography
I am working on a project where I need to divide an image file into smaller parts (no. of parts is user input). Let's say, 2 par...

quasi 6 anni fa | 1 risposta | 0

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risposta

Domanda

Code debugging help needed
I have the following code: clc; close all; clear; workspace; N=3; % Select file ...

quasi 6 anni fa | 1 risposta | 0

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Domanda

How can I change the LSBs of consecutive elements of an array?
I have a row matrix a = [23, 255, 67, 89, 45, 90, 34, 12] and a number, n = 3 (of 8 bits) which I want to hide in the LSBs of ev...

quasi 6 anni fa | 2 risposte | 0

2

risposte

Domanda

How to display images from a cell array?
I have 5 images in a cell array 'imageshares' and I want to display them individually. figure image(imageshares...

quasi 6 anni fa | 2 risposte | 0

2

risposte

Domanda

How to divide a matrix into a variable number of smaller matrices?
My task is to divide an image into smaller parts. The dimensions of the image will be variable and I need to divide the image by...

quasi 6 anni fa | 1 risposta | 0

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risposta

Domanda

Separating RGB components from two different .png files
I used a file 'facebook.png' and separated the RGB components. The following code worked fine. if true red=f(:,:,1); %Si...

circa 6 anni fa | 2 risposte | 0

2

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Domanda

Image created but not of supported file type
I am encrypting an image and displaying the encrypted image and also saving it in the default directory with a .jpeg extension....

circa 6 anni fa | 1 risposta | 0

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Domanda

Problem with reading and writing an image
I have two programs - one to encrypt and the other to decrypt an image. At the end of the encryption, I am concatenating RGB ...

circa 6 anni fa | 1 risposta | 0

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risposta

Domanda

How to save an image from imshow() as a .jpeg?
I am creating an RGB image and displaying using imshow(). Once the image is displayed, if I save the image as .jpeg, it gets a w...

circa 6 anni fa | 2 risposte | 0

2

risposte

Domanda

Regenerating an RGB image from its components
I extracted the red component of an image and displayed the image with just the red component and I got the following result: ...

circa 6 anni fa | 1 risposta | 0

1

risposta

Domanda

Help in troubleshooting a code
f=imread('Image.jpeg'); red=f(:,:,1); [r,c]=size(red) z=zeros(r,c); for i=1:r for j=1:c z(i,j)=dec2hex(red...

circa 6 anni fa | 1 risposta | 0

1

risposta

Domanda

Compare matrices from different programs
I have two matrices created from two different programs. Matrix A from program A and matrix B from program B. The matrix sizes a...

oltre 6 anni fa | 2 risposte | 0

2

risposte

Domanda

Separate the digits in a hex number
I want to use the digits from hex numbers as indices to a lookup table. Eg: if the number is A9, A corresponds to the row of the...

oltre 6 anni fa | 2 risposte | 0

2

risposte

Domanda

Using imported lookup tables from Excel
I am new to Matlab and want to use lookup tables. Using the Matlab help on lookup tables I found the following code to import a ...