Live video based on motion tracking and animation of forearm

An electronic device, comprising a memory and a processor, wherein the memory is configured to store a computer program, and when the processor is configured to invoke the computer program, the electronic device implements a method for generating a live video, wherein the method for generating a live video comprises:

• acquiring first feature data of a physical object in real time, wherein the physical object comprises a torso, a main arm connected to the torso by a shoulder joint, and a forearm connected to the main arm by an elbow joint, the first feature data is configured for representing rotation angles of a plurality of parts of the forearm around an axial direction, and the rotation angles of the plurality of parts of the forearm around the axial direction are positively correlated with distances from the plurality of parts of the forearm to the elbow joint of the physical object;
• controlling rotation angles of a plurality of parts of a forearm skin of a virtual model around the axis direction based on the first feature data acquired in real time, wherein the virtual model comprises a torso, a main arm connected to the torso by a shoulder joint, and a forearm connected to the main arm by an elbow joint, the forearm skin covers an outer surface of the forearm of the virtual model, and the rotation angles of the plurality of parts of the forearm skin around the axial direction are positively correlated with distances from the plurality of parts of the forearm skin to the elbow joint of the virtual model;
• and
• generating an image frame of the live video according to the virtual model and the rotation angles of the plurality of parts of the forearm skin of the virtual model around the axis direction;
• wherein the forearm of the virtual model comprises a main bone, a plurality of segments of additional bones socketing on the main bone, and the forearm skin covering the plurality of segments of additional bones;
• and
• controlling the rotation angles of the plurality of parts of the forearm skin of the virtual model around the axis direction based on the first feature data acquired in real time comprises:
• controlling a rotation angle of at least one of the plurality of segments of additional bones around the main bone based on the first feature data acquired in real time to control a rotation angle of the forearm skin around the axial direction.

A non-transitory computer-readable storage medium storing a computer program, wherein when executing the computer program, a computer device implements a method for generating a live video, wherein the method for generating a live video comprises:

• acquiring first feature data of a physical object in real time, wherein the physical object comprises a torso, a main arm connected to the torso by a shoulder joint, and a forearm connected to the main arm by an elbow joint, the first feature data is configured for representing rotation angles of a plurality of parts of the forearm around an axial direction, and the rotation angles of the plurality of parts of the forearm around the axial direction are positively correlated with distances from the plurality of parts of the forearm to the elbow joint of the physical object;
• controlling rotation angles of a plurality of parts of a forearm skin of a virtual model around the axis direction based on the first feature data acquired in real time, wherein the virtual model comprises a torso, a main arm connected to the torso by a shoulder joint, and a forearm connected to the main arm by an elbow joint, the forearm skin covers an outer surface of the forearm of the virtual model, and the rotation angles of the plurality of parts of the forearm skin around the axial direction are positively correlated with distances from the plurality of parts of the forearm skin to the elbow joint of the virtual model;
• and
• generating an image frame of the live video according to the virtual model and the rotation angles of the plurality of parts of the forearm skin of the virtual model around the axis direction;
• wherein the forearm of the virtual model comprises a main bone, a plurality of segments of additional bones socketing on the main bone, and the forearm skin covering the plurality of segments of additional bones;
• and
• controlling the rotation angles of the plurality of parts of the forearm skin of the virtual model around the axis direction based on the first feature data acquired in real time comprises:
• controlling a rotation angle of at least one of the plurality of segments of additional bones around the main bone based on the first feature data acquired in real time to control a rotation angle of the forearm skin around the axial direction.