Nail shape extraction system and method, storage medium, and nail sticker and manufacturing system therefor

A nail shape extraction system based on point clouds, comprising a cyclic processing device for processing point clouds, wherein the cyclic processing device comprises:

• a point cloud acquisition module configured to acquire point cloud data, convert the acquired point cloud data into a point cloud list {Ract}, and output the point cloud list {Ract} ;
• and
• a point cloud processing module connected to the point cloud acquisition module, and configured to perform a cyclic action on points in the point cloud list {Ract} output by the point cloud acquisition module to obtain a new point cloud list {Ract′};
• the point cloud processing module comprises:
• a pushing unit connected to the point cloud acquisition module, and configured to acquire the point cloud list {Ract} output by the point cloud acquisition module and push all the points in the point cloud list {Ract} into an empty to-be-acted point list {act};
• a selection unit connected to the pushing unit, and configured to select one point from the to-be-acted point list {Aact} as a current to-be-acted point Pact and search for all neighboring points {Nact} of the current to-be-acted point Pact under a set condition;
• an action unit connected to the selection unit, and configured to select neighboring points Nact(i) meeting an action condition from the neighboring points {Nact}, classify the neighboring points Nact(i) to select a growing action or a flattening action and then push the neighboring points Nact(i) meeting the action condition into the point cloud list {Ract} and the to-be-acted point list {Aact} ;
• an elimination unit connected to the action unit, and configured to mark the current to-be-acted point Pact as an acted point and eliminate the acted point from the to-be-acted point list {Aact};
• and
• a circulation unit connected to the selection unit, the action unit and the elimination unit, and configured to promote the selection unit, the action unit and the elimination unit to act cyclically until the to-be-acted point list {Aact} is emptied to obtain the new point cloud list {Ract′}.