Images and Scanning

Tom Kelliher, CS14A

May 5, 1997

Images

1. Image file formats:
   1. TIF.

   2. GIF: 256 colors, interlaced, transparency

   3. JPEG: up to 16M colors.

2. Image size: pixels.

3. Compression --- decreasing file size. Lossy vs. lossless.

Images on the Web

1. Copyright.

2. Usable formats: GIF, JPEG.

3. Consideration for those with slow Internet connections or text-only browsers:
   1. Thumbnails.

   2. Using GIF rather than JPEG; decreasing the number of colors.

   3. Providing text-only menus along with image-based menus.

   4. Monitor resolution: yours vs. theirs.