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# Darsana P M

Active since 2016

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Question

How to extract an image from a bounding box?
s1=bwareaopen(s1,500); se=strel('disk',2); s1=imdilate(s1,se); s1=bwareaopen(s1,800); stats=regionprops(s1,'area','boundi...

3 years ago | 2 answers | 0

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Question

Can somebody help me to modify this code?
I am working with quaternion calculus. So inorder to find the quaternion rotation matrix, Brot = q.B.(q^-1) then to find...

3 years ago | 1 answer | 0

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Question

How to solve the error?
for k=1:3:22 for l=1:3:22 for i=1:b:M for j=1:b:N Block(l,k)=L0(i:i+b-1,j:j+b-1); A=z...

3 years ago | 1 answer | 0

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Question

How to solve the problem?
I have a 198x198 matrix, an image. I need to get 3x3 matrices each from the above matrix. Total, 22 matrices, how to access each...

3 years ago | 1 answer | 0

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Question

How to solve the equation?
I have the following code to do fft(); d='cameraman.png'; F=fft2(d); Fsh=fftshift(F); s2=log(1+abs(Fsh)); In th...

4 years ago | 0 answers | 0

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Question

How to run the code?
https://in.mathworks.com/matlabcentral/fileexchange/45038-generate-digital-signature-of-images?focused=3805874&tab=function I...

4 years ago | 1 answer | 0

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Question

How to solve the problem?
I have a dicom image,I of size : size(I) ans = 716 1000 3 From this I took fi...

4 years ago | 1 answer | 0

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Question

Can I insert a png image into dicom image?
I found many codes for inserting an image into another, using LSB and other methods. Can I use those codes for dicom images also...

4 years ago | 1 answer | 0

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Question

How to solve the error?
I am trying to do hide 1 image within another. While performing this, I got an error. What might be the issue? numberOfBit...

4 years ago | 1 answer | 0

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Question

How to show an image?
I would like to display a matrix as an image. The matrix is of size 250 2. I used image() function. But got an error stating an ...

4 years ago | 1 answer | 0

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Question

How to get discrete frequency domain values of windows?
I gave the command window = ones(64,1) Then I got 64 time domain values. How to get 64 frequency domain values of rectang...

4 years ago | 0 answers | 0

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Question

How to solve this issue?
I am doing encryption of an image. In between, there is a step to do bitxor. For that one input is decimal values and the other ...

4 years ago | 0 answers | 0

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Question

How to solve the error?
iop=cat(4,CIPH,TAGG'); I got this error: Error using cat Dimensions of matrices being concatenated are not consistent. ...

4 years ago | 1 answer | 0

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Question

How can we convert a 4D text into an image?
I am working on cryptography. I gave DICOM as the input. From this, I take the plaintext. Finally i get a cipher text.It is of s...

4 years ago | 0 answers | 0

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Question

How to solve this error?
g=cat(4,A1,C,len,A1); This command gives no error for C=>> C C(:,:,1,1) = Columns 1 through 6 ...

4 years ago | 2 answers | 0

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Question

How to solve the error?
clc; clear all; close all; I = dicomread('C:\Users\Click Me\Desktop\NIELIT\images output\try.dcm'); info = dicomin...

4 years ago | 1 answer | 0

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Question

How to solve this error?
I was trying to input a dicom image. But I got an error. Error using dicomread>getFileDetails (line 1426) File "img.dcm"...

4 years ago | 1 answer | 0

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Question

Will I be able to hash a DICOM image?
I have a DICOM image as input. I would like to hash the dicom image using any hash algorithm? Will I be able to perform hash us...

4 years ago | 2 answers | 0

### 2

Which is the easiest method for shifting binary digits to the right?
for i=1:1:16 if x(i) == 0 % yj = y; Z = Z else x(i) == 1 Z = bitxor(Z,v); ...

4 years ago | 0

Question

Which is the easiest method for shifting binary digits to the right?
x1 = {'1' '0' '1' '1' '0' '1' '0' '0' '0' '1' '1' '1' '0' '0' '1' '1'}; x=hex2dec(x1); Thus in command window, x =...

4 years ago | 2 answers | 0

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Question

How to solve this problem?
I have a doubt in my program logic. I dont know how to access the cells. Can somebody help me. x1={'1' '0' '0' '0' '1' '0'}...

4 years ago | 0 answers | 0

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Question

How to extend this code?
I have attached a code below, which performs an operation. In the code below, i have done it with input as 8 digits. i want it ...

4 years ago | 0 answers | 0

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Question

What is the error in this?
function DECout = gf2dec(HA) c=0:[(2^8)-1]; GFRefarray=gf(c); for i=1:length(HA) for k=0:(2^8)-1 te...

4 years ago | 1 answer | 0

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Question

How to solve the error?
I have the following A1={'00' '00' '00' '00' '00' '00' '00' '00' '00' '00' '00' '00' '00' '00' '00' '00'}; C is a cell a...

4 years ago | 1 answer | 0

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Question

How to do galois multiplication?
Suppose I have 2 cell array inputs as shown below: A={'fe' 'ff' 'e9' '92' '86' '65' '73' '1c' '6d' '6a' '8f' '94' '67' '30'...

4 years ago | 1 answer | 0

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Question

How to do xor operation in cell arrays?
Suppose, A={'d9' '31'}; B={'42' '83'}; The expected output is: Y={'42' '83'} My input will not be the same alwa...

4 years ago | 2 answers | 0

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Question

IV={'ca' 'fe' 'ba' 'be' 'fa' 'ce' 'db' 'ad' 'de' 'ca' 'f8' '88' '00' '01'} The expected output is: IV={'ca' 'fe' 'ba' 'be'...

4 years ago | 1 answer | 0

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Question

How to do the xor operation?
If suppose I have 2 inputs, x=58 B2 43 1B C0 BE DE 02 55 0F 40 23 89 69 EC 78 (hexadecimal values) y=00 00 00 00 00 00 ...

4 years ago | 1 answer | 0

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Question

How to solve the error in this code??
x= {'d9' '31' '32' '25' 'f8' '84' '06' 'e5' 'a5' '59' '09' 'c5' 'af' 'f5' '26' '9a'}; y= {'fe' 'ff' 'e9' '92' '86' '65' '73...

4 years ago | 1 answer | 0