MULTIMEDIA CODING
Corso
A Padova
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Descrizione
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Tipologia
Corso
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Luogo
Padova
The grading of the expected knowledge and skills is based on two contributions:
1. A closed book written exam, where the student must solve 3 problems, needed to verify that a good knowledge of the theoretical aspects of Information Theory and of the fundamental characteristics of the various lossless and lossy coding systems analyzed during the course has been acquired.
2. The development of a home assignment consisting in a computer simulation project using Matlab. The project simulates a coding/decoding system for data and/or multimedia signals.
Each student must write a report describing the methodologies used to solve the assigned project with the obtained results and show them by means of a short presentation (using slides).
The written exam contributes 50% to the final score, and the project contributes the remaining 50% to the final score.
Sedi e date
Luogo
Inizio del corso
Inizio del corso
Opinioni
Materie
- Audio
Programma
Fundamentals of Information Theory. Entropy and its properties. Single symbol coding. Uniquely decodable codes and prefix codes. Huffman coding. Coding blocks of symbols. First Shannon theorem.
Typical set. Asymptotic equipartition property.
Arithmetic coding and dictionary-based coding (Ziv-Lempel). Context based adaptive coding.
Lossy coding:
Scalar quantization. Uniform and nonuniform quantization. Optimal Lloyd-Max quantizer. Nonuniform companded quantization.
Vector quantization. The LBG algorithm.
Rate-distortion function R(D) and distortion-rate function D(R). Gaussian case. Shannon lower bound.
Predictive coding. DPCM and optimal linear predictor. Transform coding. Karhunen-Loève transform and DCT. Subband coding. Optimal bit allocation. Coding gains and asymptotic values.
Applications to multimedia signal compression (audio, images, video):
Multimedia signals redundancy. Objective redundancy and perceptual redundancy. Image coding. Coding of general audio signals and of speech. Video coding.
Essentials of MPEG Audio (MP3), JPEG, JPEG2000, MPEG2 and H.264/AVC standards.
Hai bisogno di un coach per la formazione?
Ti aiuterà a confrontare vari corsi e trovare l'offerta formativa più conveniente.
MULTIMEDIA CODING