What are different ways to compare the histogram of cipher images from various encryption schemes?

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What is the ideal value of UACI for image encryption scheme?

UACI - Unified Averaged Changed Intensity between cipher images. Why some papers refer ideal value to be 33.33 and some refer it to be 33.46? Which is the correct value? (In reference to image...

11 February 2021 9,562 2 View

Should a better value for UACI be below or closer to ideal values or higher as possible?

The ideal theoretical value for UACI(Unified Average Changed Intensity) is 33.33% for testing the robustness of image encryption algorithm against differential attacks. Is it better to have a UACI...

30 January 2021 2,016 3 View

How to find the chi square test value for histograms of plain and cipher image?

I want to test the uniformness of values in histogram through chi-square analysis in an image encryption algorithm.

29 January 2021 4,093 2 View

How is the variance for an image exactly computed to test the uniformness of its histogram?

I am trying to compute the variance of a plain and cipher grayscale LENA image... I found in a paper that variance value is equal to 630780 for a plain Lena image while if I calculate I find it...

28 January 2021 8,036 5 View

Should the correlation between adjacent pixels in a cipher image be low or close to zero as possible?

This question in the relation to calculating the horizontal, vertical, and diagonal correlation of a cipher image in an encryption algorithm. I have read that the correlation values should be as...

13 January 2021 1,297 4 View

What are some of the efficient techniques used for image scrambling?

I am using 3D Arnold transform for my EC-ElGamal encryption technique but it consumes a lot of time during the execution of the program using Python. So I was wondering if there are BETTER ideas...

07 January 2021 205 2 View

What are the assumptions and limitations of Miner's rule ? Is there any better cumulative damage model available for steel?

What are the assumptions behind miner's rule? Is there any cumulative damage model that takes care of these assumptions?

14 December 2020 333 1 View

How do i code to get the correlation coefficient along horizontal, vertical and diagonal for plain and cipher images?

I am trying to do the correlation analysis for grayscale images and their ciphers in Python or MATLAB. But I don't understand how to code the same. Also, I didn't get any function or existing code...

01 December 2020 6,388 3 View

Is IMAGE ENCRYPTION using ECC a good research area?

There have been existing works like Singh and Singh(2015) and subsequently one in 2017 that performed Image encryption using ECC. But I have been seeing ppl comment that encryption with ECC is not...

14 October 2020 4,479 5 View

What is the application of copper electrodeposited on Graphite ?

As we know Graphite is a nonmetal and copper is a metal then why we electroplate copper on graphite? What is the application of copper electroplate on Graphite?

13 September 2020 2,696 6 View

Anyone plz suggest relevant topic for research in image processing+Deep learning.?

I have selected brain tumor images ...but now found that already lots of research done n this topic.

03 March 2021 5,774 3 View

Can we block unwanted images during the x-ray prediction?

i am try to classify the x-ray images. During classification , can i block unwanted images (except x-ray image).

03 March 2021 7,100 1 View

I need to image mesoporous silica nanoparticles that are in ~100 nm size and do high resolution TEM to look at mesopores. what grids should I use?

Need to image mesoporous silica nanoparticles using the TEM. Also, need high resolution TEM images to see the mesoporous structure. Kindly suggest what kind of grids to use. Thanks, Shatadru

02 March 2021 1,787 2 View

Is there a classification scheme for rock cavities or caverns with respect to their size and shape?

The range of forms and sizes of cavities in rock is very big. Is there a classification scheme for rock cavities regarding their size and shape?

02 March 2021 4,511 3 View

Do I need to strip the PVDF membrane before staining it with colloidal gold?

Dear Colleagues, After running Western blot on PVDF membrane and detection using ECL, I would like to stain my PVDF with colloidal gold to be able to allign the ECL image with total proteins on...

02 March 2021 7,829 3 View

Do you know any MR image dataset?

I would like to research on MR images (0.5T and 3T). Can you please suggest some websites that I can download dataset including both 0.5T and 3T MR images? Thank you.

02 March 2021 7,735 3 View

How to find the mode of classified ocean colour images?

Hello, I have classified 10 S3 OLCI images from the same area (althouth not the same size and/or quadrant) and I would like to do a final image using the mode of the pixel of these 10 images. I...

01 March 2021 9,874 3 View

How to threshold an image despite bright lighting, using ImageJ/Fiji?

Hi everyone, I am using Fiji to determine the percentage of the image covered by leaves, branches, or trunk, but i've encountered some difficulty when the sun hits parts of my image like the one...

27 February 2021 1,194 3 View

How to evaluate unsupervised clustering metrics when some elements do not have a cluster label in the result?

I run algorithms like HDBSCAN and MeanShift, and compare them with K-means and GaussianMixture. The first two algorithms do not return cluster labels for some elements in the dataset. My question...

27 February 2021 428 3 View

Trouble with Charting with Google Earth Engine (Technical)?

Hello. I have a problem with the charting in google earth engine. I created an image collection by combining 5 image collections of five parameters and using ee.Join.inner ( ) and .apply ( )...

26 February 2021 7,084 2 View

Muhammad Ali

Have a look at Article A secure image encryption scheme based on cellular automata ...

Article Evaluation of the quality of an image encrytion scheme

https://www.ijert.org/research/a-performance-comparison-of-encryption-algorithms-for-digital-images-IJERTV3IS21325.pdf

Assaad El Makhloufi

they are four popular metrics :

1- the variation of pixel cipher image(histogram) from original image.

2-the entropy

-3 the correlation (verticale-horizontal and diagonal)

4- PSNR and UACI metrics.