Computer-aided measurement of thread accuracy with a toolmaker's microscope

Hui-Fen Yu; Shou-Bin Liu; Ke-Jun Xiang

doi:10.1117/12.198694

4 January 1995 Computer-aided measurement of thread accuracy with a toolmaker's microscope

Hui-Fen Yu, Shou-Bin Liu, Ke-Jun Xiang

Proceedings Volume 2349, Industrial Optical Sensors for Metrology and Inspection; (1995) https://doi.org/10.1117/12.198694
Event: Photonics for Industrial Applications, 1994, Boston, MA, United States

Abstract

By analyzing the measuring principle of tool maker's microscope, the article presents a new method for thread measurement with a tool maker's microscope assisted by computer. Special real-time image sampler was developed. A new measuring system was established and relative software has been designed. For the hardware design, the technique of DMA transfer data was adopted and the real-time sampling of one field of image was realized. For the software design, both assembly language and high level language were used. Image sampling and edge detection were operated by assembly language rapidly and the thread parameters were calculated by high level language. Experiments show that the system can measure the thread parameters automatically and rapidly. The study of computer-aided measurement of thread accuracy with a tool maker's microscope is useful to realize the intelligent measurement of another shape accuracy with a tool maker's microscope.

Citation Download Citation

Hui-Fen Yu, Shou-Bin Liu, and Ke-Jun Xiang "Computer-aided measurement of thread accuracy with a toolmaker's microscope", Proc. SPIE 2349, Industrial Optical Sensors for Metrology and Inspection, (4 January 1995); https://doi.org/10.1117/12.198694

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KEYWORDS

Microscopes

CCD cameras

Digital imaging

Edge detection

Image processing

Video

Charge-coupled devices

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