Chapter 4: Images

1. Still images are generated in two ways: 1.Bitmaps (raster) 2. Vector-drawn graphics

2. Understanding natural light and color 1. Light comes from an atom where an electron passes from a higher to a lower energy level.  2. Each atom produces uniquely specific colors.  3. Color is the frequency of a light wave within the narrow band of the electromagnetic spectrum to which the human eye responds. 4. Additive color 5. Subtractive color 6. Color models

3. Bitmaps   1. Bitmapped images can have varying bit and color depths. 2. A bitmap is made up of individual dots or picture elements known as pixels or pels. 3. Bitmapped images can have varying bit and color depths.

4. Vector-drawn graphics   1. Applications of vector-drawn object 2. How vector-drawn images work 3. Vector-drawn images versus bitmaps

5. Features of a 3-D application 1. Modeling 2. Extrusion 3. Lathing

6. Cross-platform formats 1. JPEG, GIF, and PNG 2. Adobe Portable Document Format (PDF)  3. PSD, AI, CDR, DXF  4. Initial Graphics Exchange Standard (IGS or IGES)

7. Image File Types Used  in Multimedia 1. Macintosh formats 2. Windows formats 3. Cross-platform formats