New Image Encryption and New Image Encryption and Compression Method Based on Compression Method Based on

Independent Component AnalysisIndependent Component Analysis

INTRODUCTIONINTRODUCTION

propose a method combining encryption and compression based on Independent Component Analysis (ICA) and Discrete Cosine Transform (DCT)

APPROACHAPPROACH

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With the property of the DCT transform which regroup the important information in the upper-left corner

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Demixing: FastICA is used Inverse rotation and inverse discrete cosin

e transform: use the rotation “key” to reconstruct

the original DCT components IDCT

RESULTRESULT