Relief is a kind of sculpture that carves the concave and convex image on the plane. It is an artistic expression form between circular sculpture and painting. The spatial structure of relief can be a three-dimensional form or a plane form; it can not only be attached to a carrier, but also exist relatively independently.
Relief compression assumes that there are three axes for a solid space: X axis, Y axis and Z axis, where x axis is vertical axis, Y axis is horizontal axis and Z axis is depth axis. When doing relief, keep the x-axis and y-axis unchanged, and compress the Z-axis and all the above in a plane. How to keep the X, y, and axis unchanged, first carefully start the draft, then apply a layer of accumulated soil at the farthest point from you, and then apply three layers of accumulated soil at the nearest point, if you are doing something close to the circular relief, just don't forget to reduce the proportion of Z axis at any time.
This method is often used in multi-level, complex composition, often high, medium, low relief performance at the same time. The most common is that the foreground figures adopt the method of painting relief. With the development of the scenery, it becomes more and more flat until the background is only slightly portrayed. Here, the defining signs of the way of expression need to be clear. A. high relief is the feeling behind the back of the object. B. the medium relief should be compressed to one half of the Z axis. C. the shallow relief may be compressed to one tenth. Using the difference of thickness is to use the illusion of human vision, when necessary, to push the objects behind to the front, or even in a plane.
Outer contour lifting
It refers to the place where the front and back contours of the boundary between the outer contour and the background and the vertical height of the background are called the starting position. When observing and learning other people's relief works, we should pay special attention to how these connections deal with one side of the relief to observe how the artist deals with the tiny changes and how the distant eye just emerges from the eyebrow pen. This lifting technology is very important in relief. It can open the distance between the main body and the background, make relief have a three-dimensional sense and show multi-level.