Expandable light tablet tool (XLTT): an expandable digital light tablet tool

Michael Gruber; Wolfgang Walcher

doi:10.1117/12.182817

17 August 1994 Expandable light tablet tool (XLTT): an expandable digital light tablet tool

Michael Gruber, Wolfgang Walcher

Proceedings Volume 2357, ISPRS Commission III Symposium: Spatial Information from Digital Photogrammetry and Computer Vision; (1994) https://doi.org/10.1117/12.182817
Event: Spatial Information from Digital Photogrammetry and Computer Vision: ISPRS Commission III Symposium, 1994, Munich, Germany

Abstract

The importance of digital images has increased and the need for hard- and software tools for creating, archiving, and managing digital images as well for image manipulation and image mensuration. The XLTT software (expandable light tablet tool) is designed to access medium sized digital images (usually 10 to 50 Megapixels each) and allow image coordinate mensuration with subpixel accuracy. Great efforts were spent on the design of the graphical user interface, which gives access to multiple images at a time and allows simultaneous coordinate mensuration of identical points. XLTT is modeled as a digitizer for convenient image mensuration. Additional functions, like image enhancement, geometric transformation of images, stereo mensuration of image pairs, and image correlation are also available. XLTT was developed using IDL+R) and C and is implemented on silicon graphics workstations.

Citation Download Citation

Michael Gruber and Wolfgang Walcher "Expandable light tablet tool (XLTT): an expandable digital light tablet tool", Proc. SPIE 2357, ISPRS Commission III Symposium: Spatial Information from Digital Photogrammetry and Computer Vision, (17 August 1994); https://doi.org/10.1117/12.182817

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