Method for processing three-dimensional scanning data, three-dimensional scanning method, and three-dimensional scanning system

A three-dimensional scanning system, comprising:

• a laser tracker, a target optical tracker, a first target ball group, and a second target ball group, wherein the target optical tracker measures the first target ball group to acquire a first coordinate set sequence when the target optical tracker is at a plurality of different target positions, a position of the first target ball group remains unchanged, and a relative position of the second target ball group to the target optical tracker remains unchanged;
• wherein the laser tracker measures the second target ball group to obtain a second coordinate set sequence when the target optical tracker is at the plurality of different target positions, a position of the laser tracker remains unchanged, and a relative position of the second target ball group to the target optical tracker remains unchanged;
• wherein the first coordinate set sequence and the second coordinate set sequence are used for determining a target transformation matrix between a coordinate system of the target optical tracker and a coordinate system of the laser tracker.