# sonam chhikara

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**Content Feed**

Question

how to make dataset for taining classifier for steganalysis in matlab?

how to make dataset of cover and stego images for classifier training or any default dataset available

4 years ago | 0 answers | 0

### 0

answersQuestion

how to download BOSS data set for steganalysis?

BOSS Dataset is used for steganalysis.

4 years ago | 0 answers | 0

### 0

answersQuestion

from where i get the image set of size 1024*1024 or more for image processing in MATLAB?

I need atleast 15 images of large size (1024*1024 or bigger)for my project which is on steganography using MATLAB. would anyone ...

6 years ago | 2 answers | 0

### 2

answersQuestion

how to calculate entropy of a video file?

I want to calculate entropy for a video.First I read a video and show frames then I want to calculate entropy for all frames...

6 years ago | 0 answers | 0

### 0

answersQuestion

if i chnage 2 random DCT coefficient of a block of a image then inverse DCT after changing in dct will same or different before any changing in DCT coefficent and then inverse DCT?

if i have an 8*8 image and apply DCT on it and then simply inverse dct of it while in another case if i change some dct coeffici...

7 years ago | 0 answers | 0

### 0

answersQuestion

gary to RGB image convertion by using map values?

i have color value of each pixel in 'map ' now anyone can tell me how to convert a gray image by using these value of map to RGB...

7 years ago | 0 answers | 0

### 0

answersQuestion

how to use user defined function which only change some value of block not all in blockproc() in matlab?

i have one B1 image matrix of size 512*512 and want to apply my dhide_fun on each block which change some values of each 8*8 blo...

7 years ago | 1 answer | 0

### 1

answerQuestion

how can i use dctmtx() and blockproc() for converting a 512*512 image matrix to its dct matrix in matlab? and what will be the func argument in blockproc() for dct of the matrix?

dct from blockproc()

7 years ago | 0 answers | 0

### 0

answersQuestion

is it compulsory that we can use dct during image compression? can i use dct just for hiding some data in it and again inverse dct on that and get the steg imaage similar to original image?

where dct is used?

7 years ago | 1 answer | 0

### 1

answerQuestion

how to get a matrix from same size cells.like get 512*512 matrix from 8*8 cells???

512*512 matrix from 8*8 cells

7 years ago | 1 answer | 0

### 1

answerQuestion

I need matlab code for selecting video frames which are stored in a folder and one by one hide data in same way on each frame. Anyone can give code for this work???

i use dct block for hiding.

7 years ago | 1 answer | 0

### 1

answerhow to compare two videos in matlab ? i have extracted frames from video but what should be next in comparing process ??

but this tool take video from any hardware like webcam etc. i need to compare two videos which are in mp4 format and saved with ...

7 years ago | 0

Question

how to compare two videos in matlab ? i have extracted frames from video but what should be next in comparing process ??

i want to compare histogram of each frame from both videos.

7 years ago | 2 answers | 2