Bitmaps, also known as dot matrix images or raster images, are patterns composed of individual points called pixels (picture elements), which are arranged and colored in different ways. The advantage is that as long as there are enough pixels with different colors, colorful images can be made to vividly represent natural scenes; Disadvantages are that scaling and rotation are easily distorted and the file capacity is large.

Vector diagram, also known as object-oriented image or drawing image, is an image represented by geometric primitives based on mathematical equations such as points, lines or polygons in computer graphics. The advantages are that it is not distorted regardless of enlargement, reduction or rotation; The disadvantage is that it is difficult to express realistic image effects with rich color levels.

Bitmaps will be distorted when enlarged.

Extended data:

Vector diagram can move and change its attributes many times, while maintaining its original clarity and curvature without affecting other objects in the legend. These characteristics make vector-based programs especially suitable for legend and three-dimensional modeling, because they usually require the ability to create and manipulate a single object. Vector-based drawing is independent of resolution.

The biggest difference between vector diagram and bitmap is that it is not affected by resolution. Therefore, when printing, the graphics can be enlarged or reduced at will without affecting the clarity of the drawing, and can be displayed on the output device with the highest resolution.

Baidu Encyclopedia-Bitmap

Baidu Encyclopedia-Vector Diagram