What are the structures and skills of human body sketch?

(1), the basic structure of human body

The basic structure of the human body can be summarized by "one vertical, two horizontal and three rolled limbs" (figure 1 basic structure of the human body).

A vertical refers to the spine of the human body, which is commonly called the spine. The spine is a vertical longitudinal axis connecting the skull, chest and pelvis. It is the main feature of human body structure and shape.

The second horizontal refers to the shoulder line (the connecting line between the left and right acromion) and the bone hip line (the connecting line between the left and right hip joints), which are located at the upper and lower ends of the trunk and are the ties between the trunk and the limbs. The two horizontal lines are inclined in opposite directions except that the human body is horizontal and parallel when standing at attention.

Three volumes refer to the three cubic volumes of human head, chest and pelvis. These three volumes are all static whole, connected by spine. The bending and rotation of the spine make the three volumes appear in different states such as pitch, tilt and torsion, and produce corresponding perspective changes, showing the basic characteristics of the human torso (head, chest and pelvis (three volumes)).

Limbs refer to upper limbs and lower limbs, which are circular vertebral bodies connecting the upper and lower ends of the trunk respectively (upper limbs and lower limbs in the picture).

Skills:

Three stops, five eyes, seven stands and five sittings are all reference standard proportions for reference only. But in actual painting, the proportion of the human body will change due to the influence of perspective, so don't memorize the proportion, but draw a vivid human body according to the situation. The skill is to learn to use the perspective principle, be good at comparison, and determine the length, thickness and size of each part of the human body through comparison. For example, from top to bottom, the human body will be big and small. So the length of the finger should be determined according to different angles (find a reference).