ExamGecko
Question list
Search
Search

Related questions











Question 100 - 212-81 discussion

Report
Export

Which analysis type is based on the statistics of the numbers of unique colors and close-color pairs in a 24-bit image, a method that analyzes the pairs of colors created by LSB embedding?

A.
Differential Analysis
Answers
A.
Differential Analysis
B.
Discrete Cosine Transform
Answers
B.
Discrete Cosine Transform
C.
Raw Quick Pair
Answers
C.
Raw Quick Pair
D.
Chi squared analysis
Answers
D.
Chi squared analysis
Suggested answer: D

Explanation:

Raw Quick Pair

https://www.cs.auckland.ac.nz/courses/compsci725s2c/archive/termpapers/yy.pdf

Du and Long2 (2000) introduced Raw Quick Pairs detecting method of Stego-images (the images that contain the steganographic message). The underlying principle of the method is that the number of close color pairs of Stego-images will be larger compare with the number of close color pairs of normal images. In contrast, Fridrich and Goljan (2001) pointed out that RQP method only works if the number of unique colors is relatively low; and the method can not be applied to grayscale images. However, this paper will outline the core principle of RQP method; and evaluate such critical comments in details. In addition, this paper suggests potential improvement of RQP method and provides one possible alternative.

Incorrect answers:

Chi squared analysis - https://en.wikipedia.org/wiki/Chi-squared_test

Differential Analysis - https://en.wikipedia.org/wiki/Differential_cryptanalysis

Discrete Cosine Transform - https://en.wikipedia.org/wiki/Discrete_cosine_transform

asked 18/09/2024
Devon Woods
37 questions
User
Your answer:
0 comments
Sorted by

Leave a comment first