Graphic and Image

Graphics are any types of visual presentation that can be displayed on a a physical surface such as a sheet of paper, wall, poster, blackboard, or computer monitor. 

Images are two or three dimensional representations of a person, animal, object, or scene in the natural world. Images can be still or moving.

Graphics can be anything from how something looks to artworks of different kinds (picture, photo, chart, drawing, etc). Image means the representation of visual information such as graphs, pictures, logos, videos, drawings etc.


The difference between Vector and Raster graphics is that raster graphics are composed of pixels, while vector graphics are composed of paths. 

Advantages (Raster):
 *Raster graphics are great when creating rich and detailed images.  Every pixel in a raster image can be a different color therefore you can create a complex image with any kind of color changes and variations.
* Almost any program can work with a simple raster file. The most recognized application that handles raster graphics is Adobe Photoshop however there are also several other image editing software options out there for you to choose from.

Disadvantages (Raster):

* Raster graphics files are often quite large. Raster graphics files contain all the information for every single pixel of the image that you are working with. Each of these pixels has an X and Y coordinate as well as colour information associated with it therefore raster graphics files tend to be very large. Also, because these raster images hold so much data, they may be slower to edit.

Advantages (Vector): 

* Vector files are small because they contain a lot less data than raster files.

* Vector graphics are more flexible than raster graphics because they can be easily scaled up and down without any loss to the quality of the image.

* Vector graphics have smoother lines when compared to square, pixel-based raster graphics therefore, they are better with straight lines and sweeping curves than raster graphics.

Disadvantages (Vector): 

* If there are small errors or faults in a vector graphic, these will be seen when the vector image is enlarged significantly.

* Vector graphics are generally filled with a solid color or a gradient. They can’t display the lush color depth of a raster graphic.

Upscaling should be avoided because when you scale an image upward (make it larger), each pixel is enlarged, and you lose image detail and sharpness. The more you enlarge a raster image, the softer and fuzzier it becomes.

Aliased text is a stair-step effect caused by using square pixels to define objects and curves or diagonal lines.

Anti-aliased text smoothes out the edges of jagged type by blending the color transition points, such as the pixels along the edges of a letter.