text_to_point LISP skript

February 14th, 2014 komentáre: 0

Pokiaľ máte to šťastíčko a projektanti vám odovzdávajú výkresy s niveláciou vo forme textových hodnôt (text v nulovej výške), tak tu Lisp skript, ktorý text-value konvertuje na point z-coordinate. pokračuj / entry »

Brown’s distortion model

November 8th, 2013 komentáre: 0

I wrote a short item about raster rectification issues a month ago. The projective method mentioned at the very end of the article was designated as problematic in Autodesk Raster Design environment so I took some time to clear theoretical things behind that (since I work with Agisoft Photoscan for some time). pokračuj / entry »

The proper use of the term “structure” in archaeological stratigraphy

August 31st, 2013 komentáre: 0

The goal of this short entry is to throw some light on one peculiar part of terrain stratification units, namely the structure (and more specifically “the wall”). pokračuj / entry »

AutoCAD Raster Design – raster rectification overview

May 12th, 2013 komentáre: 1

Among other interesting functions, AutoCAD Raster Design has some possibilities to rectify raster images through well-known function Rubbersheet that enables two basic methods of rectification (triangular and polynomial). As far as I remember from my photogrammetry courses there are also other methods to do these things and there is general misunderstanding of theoretical background of two above mentioned as well. So the question is:

  • how do these methods work; what are they useful for?
  • where do they belong in the wide field of raster data processing?

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Videotutoriál – tlač v AutoCADe

February 3rd, 2013 komentáre: 0

Krátky videotutoriál k bazálnej tlači v prostredí AutoCADu. Pozdravujem Tibora Lieskovského a ospravedlnenie – spomenul som si na našu debatu v septembri až teraz, takže postujem s polročným oneskorením…

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