2. What is a vector based image and how is it different to a bitmap based image.

Images generally contain well-defined elements such as curves and shapes of various colors. These elements can either be pure graphics, western alphabets or Asian characters.In contrast, a vector image is defined mathematically using lines and curves. It’s not made up of pixels like a bitmapped image is.

Compared with bitmap; Each bitmap-based image is mapped into a grid. The size of the grid is based on the image's resolution.A bitmapped image is an image made up of pixels – for example, a JPEG photo from a digital camera or a GIF image in a web page. Bitmapped images are great for storing real-world images, such as photos, that can’t easily be mathematically defined. The main disadvantages of bitmapped images are their large file size and the fact that they can’t be scaled bits”.