What we have learn so far with Images

1. Name 4 characteristics (e.g. compression, file size, bitrate, etc)
• Bitmap: uncompressed data matrix, made up of individual dots on an image, large variation in colour and depth size (from 1bit to 24bit etc).
• Jpeg: lossy compression, very large file size, usually 16bit and higher
• Gif: lossless compression, small file size, usually 8bit (256colours)
2. What is the relationship between a bitmap and jpegs, gifs and tiffs? enable the compression of lossy and lossless of the information, usually reduces file size and quality, enhance and make composite images, alter and distort images, add and delete images, morph images, animations and web-enabled images.
3. What is the difference between a vector and a bitmap? vector graphics only defined in mathematical formulas, vector are used in CAD programs to create images, vector usually have smaller file size, quick downloading, can resizes image without distortion and perform animation quickly and harder to create images. It is opposite for bitmap which are easy to create, are photorealistic, large file sizes, extensive colours and depth.
4. What is the most appropriate use for:
• The jpeg versus a gif format? jpeg uses for good photographics and gif uses for cartoon images
• A bitmap versus a vector image? bitmap uses for representing photorealistic images with better quality, vector images generally use for animations