Module 3: Sampling
Sampling
Introduction
Two dimensional rectangular sampling
Spectrum of the sampled signal
Reconstruction from rectangular samples
Periodic Sampling
Periodic sampling with arbitrary sampling geometries
Comparison of rectangular and hexagonal sampling
Coordinate systems mapping
Non separable 2D sampling (generalization)
Quincunx sampling
Quantization
Quantization
Max Lloyed Quantizer
Uniform Quantizer
Properties of optimum Mean square quantizers
Non Uniform Quantization
Image Quantization
Vector Quantization
Vector Quantization
Major advantages
Relationship between transformation stage and quantisation stage
Codebook design and k-means algorithm
An Iterative Procedure for designing an optimal codebook
Computational and storage requirements of designing a codebook using k-means algorithm:
Tree codebook and binary search
Disadvantages of Binary Search Codebook Vs Full Search codebook
Visual Quantization
