####知识积累

Q:What is the bit depth of a JPEG? A:JPEG is standardized as an 8-bit image file. This means that each color channel of a pixel has 8-bits of data allocated to reproduce color. Sometimes you will find 8-bit color referred to as 24-bit color,which simply combines the bit depth of the Red,Green and Blue channels(8+8+8=24bits).

Q:What is the bit depth of an image? A:Bit depth refers to the color information stored in an image. The higher the bit depth of an image,the more colors it can store. The simplest image, a 1 bit image,can only show two color,black and white.

ASCII (American Standard Code For Infomation Interchange). 一共128个,其中***95个可见(32-126)***其余33个不可见.