simply define bitmap and vector graphics please.?

Answer 1

Bitmaps use a grid of pixels which determine the colour and intensity of each grid point. Something like

[blue][red] [red] [black]
[blue][red][black][black]

Etc.

A vector image, on the other hand, uses vectors and gradients based on mathematical equations to define the image, so it will for instance say that all the pixels in a particular direction go from being red to green at a particular rate.

The benefit of using vector images, is that they can be scaled infinitely. Since they are based on equations, you simply change the scale of the variables.

When you re-scale a raster image, you need to re-calculate the pixels, either losing information or having to make up new information.

Answer 2

Look at a newspaper photo with a magnifying glass. You will see a bunch of dots. That is comparable to a Bitmap. Bitmaps would include JPG, GIF, BMP, TIF, PNG, and others. Each one will do something better than the other. Example: JPG will compress to a smaller file at about 11 to 1 ratio.
Vector. Think of it this way: The computer says from point A to point B, be red. It's very simple idea, that replaces dots to make the image. It so simple that it needs less information in the file, thus you get a very small files size. Plus since it is Math (A to B) it can increase in size to whatever you need without getting dottie or what we call pixelated. The normal formats are Ai, EPS, and on the web SWF.

Answer 3

Bitmap pictures are made up of Pixels means when u draw an image of any resolution eg. 60px x 80px that means it will cover 60px horizonaly and 80px vertically and makes a static image that is defined for this size(60x80). that can't be resized. and if u did then u will lost the color information.

But in case of Vector they works on cords means (a,b) (c,d) (e,f) for a tringle. And one major difference Vector grafix draw image on realtime calculation. for example when u draw an image with 100 x 100, it will record the cords of area and its color information betweeen these cords. And when u zoom it, then it redraws the cords for fullfil the requirement. When u zoom or shrink a bitmap it loses it color information but in vector its not the case. It doen'st means image size is increasing when u zooming, it only fill the color between the given cords. wheere bitmap not 'coz they are predefined sized static image.

Answer 4

A bitmap is made up of dots. Those individual dots (or bits) are mapped so the picture can be saved and reloaded.
A vector is made up of lines, circles and other shapes. It is instructions for drawing the object.