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Hide and Seek: An Introduction to Steganography

Hide and Seek: An Introduction to Steganography

Security and Error Correction/Detection in 802.1x and GSM. Hide and Seek: An Introduction to Steganography.

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454 views • 42 slides
Introduction to JPEG

Introduction to JPEG

http://en.wikipedia.org/wiki/JPEG. Introduction to JPEG. m5141153 Akram Ben Ahmed. Outline. Introduction Encoding Decoding Summary and Future work. Introduction. JPEG (Joint Photographic Experts Group) is one of the most widely used lossy compression method.

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584 views • 36 slides
Coarse Classification via Discrete Cosine Transform and Quantization

Coarse Classification via Discrete Cosine Transform and Quantization

Coarse Classification via Discrete Cosine Transform and Quantization. Presented by Te-Wei Chiang July 18, 2005. Outline. Introduction Feature Extraction and Quantization Statistical Coarse Classification Experimental Results Conclusion. 1 Introduction.

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396 views • 25 slides
A Zero-Value Prediction Technique for Fast DCT Computation

A Zero-Value Prediction Technique for Fast DCT Computation

A Zero-Value Prediction Technique for Fast DCT Computation. Y. Nishida, K. Inoue, and V. Moshnyaga. Introduction. Discrete Cosine Transform (DCT) is the most commonly used transform for video coding (JPEG, MPEG H26x etc). Problem. DCT is a very computationally expensive task.

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273 views • 15 slides
Regression-Based Prediction for Artifacts in JPEG-Compressed Images

Regression-Based Prediction for Artifacts in JPEG-Compressed Images

Regression-Based Prediction for Artifacts in JPEG-Compressed Images. Park,Jungjin. Introduction. To achieve high compression ratio in JPEG and MPEG, the original image or video may be distorted by blocking and ringing artifact. Goal. Reduction artifacts Reduction time to process

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270 views • 12 slides
Information hiding in stationary images

Information hiding in stationary images

Information hiding in stationary images. staff corporal Piotr Lenarczyk Military Uniwersity of Technology Institute of Electronics and Telecomunication. Watermarking.

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238 views • 12 slides

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