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# Anushka

Active since 2015

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Question

Can rc4 encryption applied for color images?
The following code for rc4 encryption and decryption for grayscale images.Can this be also used for color images? function ...

5 years ago | 0 answers | 0

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how to divide an image into blocks
J = imresize(M1, [256 256]); [r c]=size(J); bs=32; % Block Size (32x32) nob=64 % Total number of 32x32 Blocks % Di...

7 years ago | 0

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Question

What does the x and y axis in the plot obtained by Scatter() in matlab indicate?
What does the x and y axis in the plot obtained by Scatter() in matlab indicate?

8 years ago | 1 answer | 0

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Question

What is the difference between corr2 and corrcoef built in functions in matlab ?Can both be used to find the correlation coefficient between two color images?
What is the difference between corr2 and corrcoef built in functions in matlab ?Can both be used to find the correlation coeffic...

8 years ago | 0 answers | 0

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Question

I did PVD steganography for hiding text in color image can any one please help me to use the same code for hiding color image inside color cover image in matlab?
I did PVD steganography for hiding text in color image can any one please help me to use the same code for hiding color image in...

8 years ago | 1 answer | 0

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Question

I did PVD modulus steganography in matlab.The Hiding process is correct and it shows the stego image.But the retrieval process is not correct. Can any one please sort out the problem in the retrieval process.
I did PVD steganography in matlab. The Hiding process is correct and it shows the stego image.But the retrieval process is not c...

8 years ago | 1 answer | 0

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Question

Is PVD steganography be used for hiding only text or can it also be used for hiding color image inside color cover image?
Is PVD steganography be used for hiding only text or can it also be used for hiding color image inside color cover image?

8 years ago | 1 answer | 0

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Question

How to find the embedding rate and embedding capacity of PVD stenography?
How to find the embedding rate and embedding capacity of PVD stenography in matlab?

8 years ago | 0 answers | 0

### 0

Question

What is an image with values one and 255 only called?
What is an image with values one and 255 only called?

8 years ago | 2 answers | 0

### 2

Question

Can a binary image be converted into color image by multiplying each value by 2^i?
Can a binary image be converted into color image by using the following equation? <</matlabcentral/answers/uploaded_files/359...

8 years ago | 2 answers | 0

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Question

How to extract 24 binary images from one RGB image which is of 24-bit/pixel color depth?
How to extract 24 binary images from one RGB image which is of 24-bit/pixel color depth in matlab ?

8 years ago | 2 answers | 0

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Question

Which are the other Spatial domain stenography methods other than LSB?
Which are the other Spatial domain stenography methods other than LSB?

8 years ago | 0 answers | 0

### 0

Question

Does psnr of stego image for LSB after AES algorithm and LSB after RC4 algorithm have any difference?
Does psnr of stego image for LSB after AES algorithm and LSB after RC4 algorithm have any difference in matlab?

8 years ago | 2 answers | 0

### 2

Question

What are other operations like XOR which can be used for combining images in Matlab ?
What are other operations like XOR which can be used for images in Matlab?

8 years ago | 1 answer | 0

### 1

Question

Can a function which works well for grayscale images be applied for RGB images also?
Can a function which works well for grayscale images be applied for RGB images also?

8 years ago | 1 answer | 0

### 1

Question

How to hide a vector inside an true color image using LSB technique?
How to hide a vector inside an true color image using LSB technique and retrieve the vector back ?

8 years ago | 0 answers | 0

### 0

Question

I used the following code for hiding a binarystring inside an image using lsb using the following code but an error occurred.
I used the following code for hiding a binary string inside an image using lsb using the following code but an error occurred. ...

8 years ago | 2 answers | 0

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Question

How to combine vectors of different size there are row vectors as well as column vectors in matlab and change it back to vectors?
How to combine vectors of different size there are row vectors as well as column vectors in matlab and change it back to vector...

8 years ago | 0 answers | 0

### 0

Question

How to see the compressed image after applying Huffman compression in an image?
How to see the compressed image after applying Huffman compression in an image?

8 years ago | 1 answer | 0

### 1

Question

Can psnr be used for any type of images?
Can psnr be used for any type of images?If an image is encoded inside an qr code.Is it possible to find the psnr of the qr code?...

8 years ago | 1 answer | 0

### 1

Question

How to store the Huffman code obtained inside an image?
How to store the Huffman code obtained inside an image in matlab?

8 years ago | 0 answers | 0

### 0

Question

How to find out the different intensity values that are used in the image and make out a list of them.Then find the freq. of occurence (probability) of each of intensity values in the image?
How to find out the different intensity values that are used in the image and make out a list of them. Then find the freq. of o...

8 years ago | 2 answers | 0

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Question

How to store Huffman code obtained after Huffman compression inside an image?
How to store Huffman code obtained after Huffman compression inside an image?Since the code obtained after encoding is very larg...

8 years ago | 1 answer | 0

### 1

Question

How to install Zxing and how to set core.jar on the class path in matlab for encode and decode of a string in QR code?
How to install Zxing and hoe to set core.jar on the class path in matlab for encode and decode of a string in QR code?

8 years ago | 0 answers | 3

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Question

How to draw a graph of an image with frequency in y axis and pixel value in x axis in matlab?
How to draw a graph of an image with frequency in y axis and pixel value in x axis in matlab?

8 years ago | 2 answers | 0

### 2

Question

How to find the contrast of a image in Matlab?
How to find the contrast of a image in Matlab?

8 years ago | 1 answer | 0

### 1

Question

What is the syntax for do while loop in matlab?
What is the syntax of do while loop in matlab? Can anyone give an example too.

9 years ago | 2 answers | 1

### 2

Question

How to convert a 5 bit decimal number to 16 bit binary number in Matlab without using dec2bin convertion?
How to convert a 5 bit decimal number to 16 bit binary number in Matlab without using dec2bin?

9 years ago | 1 answer | 0

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Question

How to code the following equation in matlab.

9 years ago | 1 answer | 0