Perspective projection: Perspective effects in graphic design

Web page Production WEBJX article introduction: Perspective is the perspective projection, between the object and the position of the viewer, imagine that there is a transparent plane, the viewer of the object each bursts out of sight, and this plane intersection point of connection, formed by the figure, called perspective. Focus on the point of view.

Perspective is the perspective projection, between the object and the position of the viewer, imagine that there is a transparent plane, the viewer of the object each bursts out of sight, and this plane intersection point of connection, formed by the figure, called perspective. Focus on the point of view.

Come to think of it, check the information.

type of Perspective
There are three kinds of perspectives: parallel Perspective, angle perspective, scatter point perspective.
1, Parallel perspective: Parallel perspective is also called a point of perspective, that is, the object to the visual line at a certain point disappeared.
2, Angle perspective: angle Perspective is also called two point perspective, that is, the object to the visual line of a certain two point disappeared.
3, Scatter point perspective: Scatter perspective is also called more perspective, that is, different objects have different vanishing point, this perspective is more common in Chinese painting.

The "Scatter point perspective" conforms to the psychological reality and is a kind of intrinsic truth. "Focus Perspective" conforms to the visual reality and is a kind of external reality. The difference between the two structural laws, from the cultural accumulation point of view, may be revealed one more attention to the heart (main), one more attention to the environment (objective) cultural differences in the news.

In general People's impression, think only Western have perspective, Traditional Chinese painting without perspective. This is not true. Traditional Chinese painting is penetrating, but its perspective method and Western perspective method is very different, Western focus on perspective, Traditional Chinese painting stress scatter point perspective method. The so-called focus perspective, is to adhere to a specific point of view to show the scenery, near the big far small, radiation-like. Scatter point perspective does not rigidly adhere to a point of view, it is a multi-view, in the performance of scenery, it can focus on the perspective of the near-large and small scenery, with a multi-view processing hiragana column of the same size scenery. Scatter point perspective method, can more fully represent the space span relatively large aspects of the scene, which is a great advantage of traditional Chinese painting.

For example, the Song Dynasty Zhang Yutang "Qingming River Map" Scroll, it uses scattered point perspective of the principle of multiple viewpoints, the ancient bianjing eastern suburbs to Hongqiao as the center of the landscape, characters, city, streets, bridges. The scene of the rich contents of the ship and so on scattered in a picture, gave a full and exhaustive performance. If the western focus perspective is adopted, it can only highlight the scenery around a point of view of the painter, and it can only be hidden away from many other scenes according to the principle of near-large and far-small.

Traditional Chinese painting is not a focus perspective, it is only in a painting according to the need to adopt multiple focus perspective. This is an important characteristic of traditional Chinese painting distinguishing from Western. In ancient China, there was no systematic perspective, but there was a deep understanding of the focus of science. As early as the German perspective painter lost more than 1000 years of Liu Song in the Six Dynasties of Zong, has written a "landscape of painting" explains the perspective of the proportion of the landscape layout of the law. But Chinese painters like to express the large space span of rivers and mountains, even want to draw the whole Yangtze River to a picture, they are not satisfied with a focus to constrain their vision, therefore, Chinese painters use mobile, subtraction, to view small scattered point perspective to express the infinite richness of the scene. This technique gives the painter a great degree of freedom in space processing.

perspective is divided into: focus perspective, scatter point perspective and air perspective.

Traditional Chinese painting is a way of using scatter perspective.
and Western painting uses focus perspective. Focus perspective also includes: angle perspective and parallel perspective. (There are other perspectives)
Air perspective is the change in the color of an object under the influence of the atmosphere. is generally the term in painting.
We often say that perspective, generally refers to focus perspective and air perspective.

Focus Perspective:
such as: Near big far small, near lofty low, near thick and thin, near wide narrow ...

Air Perspective:
such as: Near gorgeous distant gray, near clear blurred distance ...

Perspective is the perspective projection, between the object and the position of the viewer, imagine that there is a transparent plane, the viewer of the object each bursts out of sight, and this plane intersection point of connection, formed by the figure, called perspective. Focus on the point of view.

The perspective is within the visual range of the human eye. In perspective, because the projection line is not parallel to focus on the point of view, so show the size of the object, not the real size, there are nearly large and far small characteristics. Shape, because of the angle factor, rectangular or square is often drawn into irregular quadrilateral, right angle drawn into acute or obtuse angles, four sides are not equal. The shape of a circle is often displayed as an ellipse (Figure 1, 2).

Perspective Terminology:

P. P. The picture is assumed to be a transparent plane;

G P. The ground plane of the floor building is horizontal;

G L The intersection of the horizon floor and the picture;

E. Point of view of the human eye;

H. P. The horizontal plane at which the height of the human eye is seen;

H. L Visual flat line and picture of the intersection line;

H. The distance from the high point of view to the ground;

D The vertical distance from the visual angle to the picture;

C V. The point of view is the vertical line of the visual center, and the intersection of the perpendicular and the horizon;

S. L The line of sight and the points on the object;

C L The centerline of the center line over the screen is perpendicular to the visual line.