graphic stuff

Lossy versus lossless

Lossy methods are used for compressing sounds, images, or videos. Lossy methods can produce a much smaller compressed file, while still meeting the requirements of the application.

Lossless methods allow the exact original data to be reconstructed from the compressed data.

Vector vs. Pixel: Pixel based images are those constructed of pixels and are resolution dependent. Vector based images are defined by mathematical equations and are resolution dependent.

6 Major Graphic File Types

JPEG: Commonly used method of compression for photographic images. Most commonly used by digital cameras. Best use for photographs and paintings of realistic scenes with smooth variations of tone and color. NOT well suited for line drawings and other textual or iconic graphics, where the sharp contrasts between adjacent pixels cause noticeable artifacts.

GIF: Graphics Interchange Format- The format supports up to 8 bits per pixel, allowing a single image to reference a palette of up to 256 distinct colors chosen from the 24-bit RGB color space. It also supports animations and allows a separate palette of 256 colors for each frame. GIFs are suitable for sharp-edged line art (such as logos) with a limited number of colors. GIFs can also be used to store low-color sprite data for games. GIFs can be used for small animations and low-resolution film clips.

TIFF- it can be a container holding lossy and lossless compresses images.

BITMAP- meaning just a map of bits type of memory organization or image file format used to store digital images

RAW- Not yet ready or processed to be used with a BITMAP graphics editor.

PNG- Created to improve and replace GIF, good for Internet and professional use.