2016.5.15 essay ———— Web graphic design software Illustrator (Ai) and Photoshop (Ps) Introduction

1. Vector Graphics and bitmaps

Vector diagram:

A vector graph is mathematically defined as a series of points connected by lines.

Vectors are drawn according to geometric features, and can only be generated by software (not present in reality).

The file footprint is small because this type of file contains separate, detached images that can be freely and indefinitely re-assembled.

Most importantly: the vector image is not distorted after amplification, which is independent of the resolution, so it is particularly suitable for graphic design, text design and some logo design, layout design and so on.

Personal Understanding:

A vector graph is a set of data that records how this image object is formed,

So whatever the size of the canvas, the way it appears is plotted in terms of how the data is constructed.

There is no concept of pixels on its composition.

Bitmap:

Bitmap images, also called dot-matrix images. Consists of a single point called a pixel (picture element).

These points can be arranged differently and dyed to form a pattern.

When you enlarge a bitmap, you can see the countless individual squares that make up the entire image.

The effect of enlarging the bitmap size is to increase the individual pixels, so the sharpness is reduced.

2. Ai and Ps

AI is suitable for vector diagrams such as mobile apps, layout layouts for Web design, buttons, icons and other vector elements

Not suitable for images with complex color representation

PS is suitable for graphic advertising design, illustration or post-processing.

The following URLs are very detailed

Http://www.shejidaren.com/adobe-illustrator-vs-photoshop.html

2016.5.15 essay ———— Web graphic design software Illustrator (Ai) and Photoshop (Ps) Introduction