Week One- Class Notes

UNIT INTRODUCTION

First class of ACM202

Things i need to do to prepare for this class;

-read the unit guide/assignment briefs

-be punctual, organised, proffesional

-be obsessive and prolific

Assignment Due Dates;

-Inside Out: Week 5 (11th August) – 15%

-Online Quiz and Excercises: Week 6 (18th August) – 15%

-About Face: Week 9 (8th September) – 20%

-Identity Online- Week 12 (29th September) – 40%

-Online Unit Journal- Week 12 (29th September) – 10%

INTRODUCTION TO HOW COMPUTERS HANDLE IMAGES

There is a series of interconnected concepts that surround digital imaging.

Sampling

Converting a signal to digital form. Digital as opposed to analogue, is a break down of information into samples, or points of information. Analogue is a continuous signal or wave.

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Pixels & Illusion of Continuous Tone

Digital images are very fine grids of pixels which create the illusion of continuous tone, the more pixels, the smoother the image. A pixel is a sample point ^^

Bit Depth

Short for Binary Digit, which basically means on or off, (1 or 0). Bit depths refers to how much tonal range is available for each pixel, a large bit image will have lots of tone, where as a 1-Bit image would be just black and white, with no grey/tone in between. Although a BITMAP has either black or white pixels, the levels of tone work to create a seemingly continuous tone.

Levels of tone:

1-bit