'Dct transform' diaporamas de présentation

JPEG

JPEG. Introduction. JPEG (Joint Photographic Experts Group) Basic Concept Data compression is performed in the frequency domain. Low frequency components are retained. High frequency components are truncated. JPEG System Overview.

601 views • 43 slides

Exercise 7

445 views • 29 slides

A robust associative watermarking technique based on similarity diagrams

A robust associative watermarking technique based on similarity diagrams. Source: Pattern Recognition, Vol. 40, No. 4, pp. 1355-1367, 2007 Authors: Jau-Ji Shen and Po-Wei Hsu. Background. Concept of Digital Watermarking. Framework. Discrete Cosine Transform. Just Noticeable

404 views • 23 slides

Medical Image Compression by Sampling DCT Coefficients

Medical Image Compression by Sampling DCT Coefficients. Wu, Yung-Gi, IEEE Transactions on Information Technology in Biomedicine , vol. 6, no. 1, March 2002, pp. 86-94 Adviser : Dr. Chang, Chin-Chen Reporter : Chi, Kang-Liang Date : 2003/02/25. Outline. Introduction

186 views • 17 slides