Sketch basis: sketch and its expression form

Sketch is a kind of plastic arts, belonging to the category of painting, which generally refers to the use of monochrome lines or blocks to shape the image of objects.

From the function and purpose, sketch can be divided into two categories: creative sketch and practice sketch. Sketch creation belongs to the category of artistic creation, including creating only in the form of sketch and sketching for other paintings. Practicing sketch belongs to the category of sketch, which is generally an exercise to improve modeling ability and skills. Sketch is divided into: still life/animal/landscape/portrait/human sketch, etc. From the use of tools: pencil/charcoal pen/brush/ink/chalk or one or two tools interspersed with sketches and so on. From the concept of painting time, it can be divided into long-term sketch/sketch/dictation, etc. From the perspective of painting tradition, it can be divided into two types: China's freehand sketch (commonly called "line drawing") and western realistic sketch.

Sketch modeling ability refers to the ability of people to express and portray images on plane materials (such as paper, walls, etc.). ), and any form of painting embodies this ability. Therefore, sketch modeling ability is the basis of painting art.