1. Graphics and Multimedia
Chapter 8B
Graphics and Multimedia

2. Graphic File Formats File formats and compatibility
Method for storing an image
Each method has pros and cons
Some formats are proprietary
Graphic software can handle all formats
Teaching tip
Table 8B.1 on page 325 lists several image types.
MIS105: Graphics and Multimedia

3. Graphic File Formats Bitmapped images (.bmp) Most common image type
Also called raster images
Image is drawn using a pixel grid
Each grid contains a color
Color depth
Number of usable colors
Used to store drawings or photographs
Resizing image can reduce quality
Teaching tip
Describe bitmapped image as drawing on graph paper. Fill in the blocks to create the image. I use a graph paper circle to illustrate.
MIS105: Graphics and Multimedia

4. Bitmap Resized This image was drawn as a straight line.
MIS105: Graphics and Multimedia

5. Graphic File Formats Common bitmapped file formats BMP EMF GIF JPG
PICT
PNG
TIFF
Discussion point
Discuss when JPGs are appropriate. A picture of my daughter will lose some detail in her shirt. This is OK. However, a JPG of my most recent CAT scan may lose detail of a tumor. This is not OK.
MIS105: Graphics and Multimedia

6. Graphic File Formats Vector images Drawn using mathematical formulas
Formulas describe the line properties
CAD and animation software
Resizing image will not reduce quality
Teaching tip
Remind your students of the algebra classes they took in high school. The functions they plotted on the Cartesian plane are similar to vector equations.
MIS105: Graphics and Multimedia

7. Graphic File Formats Vector file formats
Most vector formats are proprietary
Two universal formats exist
DXF (Drawing Interchange File)
IGES (Initial Graphics Exchange)
MIS105: Graphics and Multimedia

8. Acquiring Images Scanners Like a photocopier Image is saved onto disk
Scanners import a variety of formats
MIS105: Graphics and Multimedia

9. Acquiring Images Digital cameras Stores digitized images
Uses long term storage
Image is usually a JPG file
MIS105: Graphics and Multimedia

10. Acquiring Images Digital video cameras Stores full motion video
Uses long term storage
Movie can be transferred to DVD
MIS105: Graphics and Multimedia

11. Acquiring Images Clip art Originally a book with images
Now a CD with images
Most office suites include a selection
Additional clip art is available online
Teaching tip
Free or inexpensive clip art is often of too poor quality to use in graphic production. They are best suited for interoffice or personal communication.
MIS105: Graphics and Multimedia

12. Graphics Software Paint programs Create bitmap images
Includes sophisticated tools
Artists draw with several brushes
Objects drawn become permanent
Windows Paint
MIS105: Graphics and Multimedia

13. Graphics Software Draw programs Create vector based images
Used when accuracy is critical
Objects have an outline and fill
Both have line style and color
Can fill using pictures
Adobe Illustrator
Teaching tip
Figure 8B.7 on page 327 demonstrates two images created with a paint program.
MIS105: Graphics and Multimedia

14. Graphics Software Photo-editing software
Modify and manipulate digital images
Work at the pixel level
Images can be enhanced
Picture flaws can be repaired
Pictures can be completely changed
Photoshop and GIMP
MIS105: Graphics and Multimedia

15. Enhancing a Photo Teaching tip
This image is an example of the solution to the project found in the Instructor’s Manual.
MIS105: Graphics and Multimedia

16. Graphics Software Computer Aided Drafting (CAD) Generates vector files
Engineering and design fields
Drawings accurate to the millimeter
AutoCAD
MIS105: Graphics and Multimedia

17. Graphics Software 3D modeling software
Generates three dimensional images
Image can be shaped on screen
Image is animated frame by frame
MIS105: Graphics and Multimedia

18. Graphics Software Computer generated imaging
Generates photo realistic images
Used for movies and television
Software eliminates tedious parts
Teaching tip
Have fun with this one. Remind the students of the Jurassic Park movies. Sarcastically say that the dinosaurs were not real. But they sure looked good.
MIS105: Graphics and Multimedia

19. Multimedia Basics Medium Way of sharing information
Voice, pictures, text
More effective with multiple mediums
MIS105: Graphics and Multimedia

20. Multimedia Basics Interactivity Users and program respond
Users can control the content
Main difference between TV and computer
MIS105: Graphics and Multimedia