The method of realizing the three-dimension positioning based on linear CCD sensor in general DSP chip

Area of Science:

• Medical instrumentation
• Computer-aided surgery systems
• Optical positioning technology

Background:

• Computer-aided surgery (CAS) systems rely on precise optical positioning.
• Previous systems utilized linear CCD prototypes for marker positioning.
• Marker coordinate reconstruction was traditionally performed on a computer.

Purpose of the Study:

• To propose and validate a novel method for 3D marker coordinate reconstruction.
• To implement this reconstruction on a digital signal processor (DSP) instead of a computer.
• To evaluate the precision and stability improvements offered by DSP implementation.

Main Methods:

• Development of a three-dimensional coordinate reconstruction algorithm for a DSP chip.
• Experimental design to compare coordinate reconstruction accuracy between DSP and computer.
• Utilizing a three linear CCD optical positioning system prototype.

Main Results:

• The DSP chip achieved 3D coordinate reconstruction precision comparable to a computer, within a 0.01mm error limit.
• No significant difference in calculation precision was observed between the DSP and computer.
• The DSP implementation demonstrated improved stability for the optical positioning system.

Conclusions:

• Implementing 3D coordinate reconstruction on a DSP chip is feasible and accurate for optical positioning systems.
• DSP-based reconstruction enhances system stability and reduces dependency on computer processing.
• This method increases hardware independence, advancing CAS system design.