Classification of sketches? There are several kinds of sketches.

First of all, according to the art system:

According to the traditional system, sketch can be divided into western realistic traditional sketch and China freehand sketch.

1, western realistic sketch

Western traditional sketch is a modeling method with light and shadow as the main means of expression. Modeling focuses on the representation of modeling, perspective, light and shadow, structure, etc. And faithfully reproduce the objective image. It is an artistic and scientific sketch method, which has the characteristics of figurative and realistic modeling.

2. China's traditional freehand sketch.

China's traditional sketch modeling method is based on line modeling, which shapes the image through line organization, line density, rhythm and rhythm, and emphasizes the charm and expressiveness of lines. It is a modeling method with intention as the main performance.

Second, according to the expression:

The performance of sketch can be divided into light and dark sketch with light and shadow as the main means of expression; Structure sketch, whose main purpose is to analyze and study the physical structure; A sketch that combines two lines and two surfaces.

1, light and shade sketch (all-factor sketch)

It is a painting method used to express the relationship between light and shadow, shape and structure of objects under the condition of light irradiation, and to realistically reproduce the real state of objective objects. It takes light and shadow as the main means of expression, and pays attention to the expression of light and shadow, the shaping of volume and the expression of spatial relationship.

2. Structural sketch

It is a painting method that takes lines as the main means of expression, pays attention to the research and analysis of the body structure, pays attention to the analysis of proportion, perspective law, three-dimensional space and the internal structure of the body, and expresses the design intention for the purpose of training creative design and painting ability. Suitable for all three-dimensional design majors (product design, modeling, sculpture) and so on.

3. Sketch of line and surface combination

It is a combination of light and dark sketch and structure sketch. There are not only the modeling characteristics of light and dark sketch, but also the physical structure relationship emphasized by structure sketch. The consciousness of line modeling is further strengthened, and modelling technique is more flexible.

Third, according to the division of function and purpose:

Sketch can be divided into basic sketch, practice sketch, creative sketch and design sketch according to its function and purpose.

1, basic sketch

According to the basic modeling training, we should cultivate the basic skills of sketch and lay the foundation for homework exercises such as creation and design.

2. Practice sketching

It is a collection of sketch materials such as scenes, props and characters for the purpose of artistic creation and to express creative ideas.

Step 3 Create a sketch

It is a creative sketch that completely expresses the author's creative intention and takes sketch as the form of expression. It is also a sketch of painting and sculpture creation.

4. Design sketch

It is a kind of painting expression of modern design sketch, and it is the language and means for designers to receive image data, express modeling creativity and communicate design schemes. Design sketch is also the training foundation of modern design painting, an effective way to cultivate designers' thinking and expression ability in images, and an important way to understand and innovate forms.

Fourth, according to the form of painting:

Sketch can be divided into sketch, copy and dictation in painting form.

1, sketch

In modern common painting language, anything that directly depicts a real object or real scene is collectively called sketch.

Step 2 copy

It is one of the learning methods of sketch. In Chinese painting, Pro is written or painted according to the original; Imitation is writing or drawing on the original with thin paper. In sketch learning, copying by imitating excellent sketch works can also achieve the purpose of learning and research, improve sketch modeling methods and performance skills, and copying is very beneficial to the improvement of artistic quality.

3. Silent painting

On the basis of observing and understanding the painted image, on the premise of mastering the basic modeling ability, we can draw the image by memory. The value of silent painting lies in improving the understanding and observation of images, which is an important means to improve the expressive force of modeling.

Five, according to the content form:

Sketch can be divided into still life, landscape, portrait, group painting, theme painting, comic book and so on.

Six, according to the completion time:

Sketch can be divided into long-term sketch, medium-term sketch and short-term sketch according to the completion time of the project.

1, long-term sketch

Long-term sketch training, mainly for the purpose of research, is an important means to improve the modeling ability through in-depth understanding and understanding, analyzing and studying the object, and cultivating the body's in-depth and accurate modeling ability and performance ability.

2. Mid-term sketch

It aims to improve the judgment, accuracy and generality of sketch modeling. Don't ask for everything, emphasize the understanding of modeling and the grasp of body relationship, and cultivate keen observation ability.

3. Short-term sketch

It is a kind of sketch practice similar to sketch, and it is an effective way to improve the ability of observing Zen and modeling. Mainly through concise, general and flexible lines to express the big characteristics of the object, you can boldly refine and choose.