Image Files chapter 3
1. Paint programs and Drawing programs
1. Paint programs create images by using pixels. Drawing programs use vectors, or lines, to produce an image.
identify the advantage of using a raster graphic
2. Used to create images such as photographs because of the wide range and variations of colors possible.
identify the advantage of using a vector graphic
3. Vector graphic are smoother than bitmaps and print without jagged edges because they are made up of individual lines, not pixels lined up next to one another on a grind.
describe the advantages and disadvantages of cloud computing
4. Cloud computing offers access to imaging software through the internet.
Explain why it is important to understand file extension
5. A file extension is the two to four letters following the dot at the end of a computer filename.
list at least four types of bitmap image extensions
6. BMP,JPG,GIF,TIF
differentiate between an AL vector file and a SVG or EPS one
7. EPS is a general purpose vector file format that has both the vector image data and a screen preview in the same file.
Explain why images are compressed
8. To reduce image file sizes, several algorithms have been written to reduce, or compress, the size of image files.
Differentiate between lossy and lossless compression.
9. Lossless produce a smaller file size and lossy deletes or changes some pixels.
bandwidth
very slow
pixel
you can see two images
resampling
Add pixels
Tagged Image File
BMP
BMP
Bitmap
Physical Size
Determine your final product
EPS
Encapsulated Post Script
Drawing Program
Graphics Software
Cite why you might want to use an interlaced image
It will load faster
JPG
Jay Peg
Digital Cameras
Pixel Densities
PNG
Portable Network Graphics
GIF
Pronounced with a hard G or soft G
TIF
Tagged Image File Format
aspect ratio
height and width
resolution
it is measured
compression
lossless and lossy
SVG
scalable vector graphics