Image Manipulation
RGB COlor
The RGB (red, green, blue) coloring system allows for a range of colors to be displayed by the computer. The RGB system uses 8 bits for each color. Colors are made by mixing the values of each color. For example the color green can be made by using the combination 0.128.0. Each color value can range from 0 to 255. The values for each color can be changed to binary for computer use or into hexadecimal for human use.
Color Channels
Color channels allow the creation of colors by manipulating the values for each color type in RGB. There are 16,777,216 total possibilities of color by changing the RGB values 0 to 255.
Raster Image Manipulation
A raster image is an where the color is determined by a RGB grid system. Each pixel in the image has a stored RGB value that gives the image color. Raster images lose quality over multiple edits and saves and have large file sizes. Raster image manipulations are made possible by modifying the color values for parts of or the entire image.
Encoding Scheme
Images can be encoded to save space or to save quality. Images that have a lossy format sacrifice image quality in order to save space. Lossless images are used to save image quality at the cost of file size. Each image file type has different encoding schemes (EXPLAIN THE DIFFERENT KINDS). Another way of saving file size is through compression. Data compression is achieved by not storing data for pixels that do not change frame to frame. Compressing data does degrade the quality of the video or image. The decrease in quality is especially noticeable when the image or video is compressed multiple times.