NEW CONCEPT OF A PHOTOGRAMMETRY SYSTEM WITH ADAPTED ”INTELLIGENT” ILLUMINATION FOR 3D-SHAPE CAPTURE USING COMPUTERGENERATED HOLOGRAMMS

• Abstract:

  A non-contact measurement system, based on the principle of photogrammetry, developed at the Fraunhofer IPT, permits a highly exact 3D-shapemeasurement of objects. Because of the limited depth focus of the projection lens used, the axial measurement range is reduced to only a few centimetres. In order to digitize the 3D-shape of technical objects of various dimensions, the structured illumination on the object surface must be in focus for each axial depth. The principle of holographic projection offers a crucial benefit, in order to project a sharp pattern in any plane. By applying computer generated holograms for projection of patterns, further depth information can be encoded. Only this allows the measuring of 3Dshapes in one step.
• Keywords:

  photogrammetry, optical 3D-measurement, holography, structured illumination
• Download:

  IMEKO-WC-2000-TC14-P354.pdf
• DOI:

  _unreg_wc-2000.354

Event details:

• IMEKO TC:
• Event name:

  XVI IMEKO World Congress
• Title:

  Measurement - Supports Science - Improves Technology - Protects Environment ... and Provides Employment - Now and in the Future

• Place:

  Vienna, AUSTRIA
• Time:

  25 September 2000 - 28 September 2000