What is the principle of vision-guided manipulator in jigsaw puzzles? Ask the master humbly.

The principle of vision-guided manipulator in jigsaw puzzles is to aim two cameras at the operator's eyes, collect human eye images, and get the focus position of the author's eyes through mechanical vision analysis of the images, so as to manipulate the manipulator to grab and send them to the assembly position, and rotate and place the jigsaw pieces according to the principle of continuity of jigsaw lines.