1. COMP101 – Exploring Multimedia and Internet Computing LA1B (Fri 11:00 – 12:50) TA: Jackie Lo

2. Lecture Review  Pixels basic unit of picture (a point)  Resolution number of pixels in two dimensions  Prime color R, G, B

3. Lecture Review  True color picture 24 bits color True color picture of 800x600 pixels requires at least 1.4 megabytes of storage  800x600x24bits = 800x600x3Bytes

4. Lecture Review  Dithering mixture of small color dots to approximate more colors  Anti-aliasing reduce jagged edges, approximating higher resolution low resolution scale up will appear jagged edges

5. Lecture Review  Image format.bmp.gif.jpg.svg