MetaData and File compression

Metadata- This is data that goes alongside a photo and has info on it like where it was taken, what format it is in, and the resolution.

Compression

Compression is the act of reducing the number of bits used to represent data.

PNG is a lossless type

often used when the image might be changed by another person. It retains a high quality while still have a reasonable file size.

Cameras often use their own format to store an image however it is often quite large due to it having a large resolution. 

Jpeg is often used because it is still a fairly high quality for a relatively small file size.

Gif's use 8 bits and are used for small animations.

Lossless compression- compressed image is as accurate as the original.

uses RUN LENGTH ENCODING. This means it shortens the number of bits needed to represent data by grouping it together.

b=blue

b,b,b,b,b,b,b,b can be shortened to 8b.

Lossy- there is more deg in the data.