Bitmapped Graphics

There are 4 ways in which we can store a bitmapped graphics. These are JPEG, GIF, BMP, PNG. There are also 5 things we take into consideration when storing a graphic. Lossy compression means that when the file size is reduced, you can lose the quality of the image. Loseless compression is the opposite and means that you can compress the file and not lose the quality as a result. Transparency is when we can see through parts of the image. If we store an image as a GIF file then we don’t lose the quality of the image. This is because it only uses a 256 colour palette whereas a JPEG file uses 16 million colour palette meaning you lose quality as it has more colours to blend together when being compressed. Uncompressed simply means that the image has not been altered.