chapter 4:images

1. understanding natural light and color:additive color.2)subractive color.3)color models.

1.1. addictive color:red,green,blue,tv and computer monitors use this method.

1.2. subractive color:mix up color by using ink.example:printerby using the same concept.subtractive color:when we zoomin we can seethe pictures dots.

2. color palattent:plattes are called color lookup tables or clut on the macintosh.the most common palatters 1-4,8-16 and bits deep.

2.1. dithering:dithering is a process wherehby the color value of each pixel is changed to the closest matching color value in the target palette.this is done using mathematical algorithm.

3. images editing programs enable:1)enhance and make composite images.2)alter and distort images.3)add and delete elements.

3.1. vector drawn  graphics:application of vector drawn object.how vector drawn images work.vector drawn images versus bitmaps.

4. versus bitmaps:vector images cannot be used for photorealistic images.vector images require a plug in for web based.bitmaps are not easily scalable are resizable.

5. still images are generated 2 ways:bitmaps and vector drawn graphics.

6. bitmapsare image format:photo realistic images:conmplex drawings requiring fine detail.