Media Data Formats - COMP6021

A selection box of topics we didn't cover in much detail.

Block Matching Algorithms

Video Compression & MPEG

JPEG

Alpha Channels & PNG

Graphics Interchange Format (GIF)

Capturing and viewing images in 3D

Reducing the number of bits per pixel by reducing the number of color and using a color lookup table (CLUT)

Image sub-sampling, pixel doubling, interpolation

Digital representations of color

1 bit images and fax machines

Human Vision: Physics, Biology, and Culture

Digitization of Black & White images

Analog audio technology. Lossy compression:Quantization, Sub-sampling. Relative encoding (a.ka. differential coding)

Analog audio technology. Lossy compression:Quantization, Sub-sampling. Relative encoding (a.ka. differential coding)

In this class we look at how a black and white image could be stored digitally

Lempel-Ziv-Welch

Quick summary of Dynamic Huffman Coding. Example of Arithmetic Coding

We looked at some real life character frequencies and did a small Huffman example by hand

Text coding. ASCII. Unicode. Compression

Welcome. COMP6021 Module details. Using bits to represent things. Text coding. ASCII.

Computers store data with just bits. How can bits be made to represent text?

Putting numbers on color. HSB