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Vectorworks Updates CAD/BIM Product Line
Cadalyst Magazine
Enhancements to file imports and exports, such as IFC, DWG/DXF, and ODBC, plus new file format support for Rhinoceros 3DM, DWF, FBX, COLLADA, and gbXML. The new COLLADA function exports Renderworks 2013 files to other rendering as well as ...

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National Motor Museum Film and Video Collection

OPF Wiki Activity Feed - 19 September 2012 - 8:26am

Page edited by Dominic Ivaldi

View Online Dominic Ivaldi 2012-09-19T08:26:32Z

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History Workshop Journal - Digital Archive Deposit

OPF Wiki Activity Feed - 19 September 2012 - 8:25am

Page edited by Thom Carter

View Online Thom Carter 2012-09-19T08:25:45Z

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Re: Valid and well-formed TIFF's with scanline corruption

OPF Wiki Activity Feed - 19 September 2012 - 8:24am

Comment added by Maurice de Rooij

Hi Gary, thanks for the explanation. Using LibTiff was our thought as well.

In reply to a comment by Gary McGath:

Here are some quick thoughts.

TIFF scan lines can be encoded by quite a number of different ways. For a short-term project, it would make more sense to use an existing library, such as LibTiff, rather than implementing all the necessary decodings.

LibTiff provides three ways to read scan line data: by scanlines, strips, and tiles. Scanlines aren't actually a separate way to store the data, but are provided as a simplified interface and aren't usable in all cases. It probably makes the most sense to use TIFFReadStrip and TIFFReadTile (or perhaps the "encoded" version) and check for returned errors. It shouldn't be necessary to do anything more with the data than make sure it's read without reporting an error.

View Online Maurice de Rooij 2012-09-19T08:24:25Z

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Deposited personal collection

OPF Wiki Activity Feed - 19 September 2012 - 8:21am

Page edited by Rebecca Webster

View Online Rebecca Webster 2012-09-19T08:21:11Z

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ISIS NeXus Data Collection

OPF Wiki Activity Feed - 19 September 2012 - 8:13am

Page edited by Paul Wheatley

View Online Paul Wheatley 2012-09-19T08:13:50Z

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History Workshop Journal - Digital Archive Deposit

OPF Wiki Activity Feed - 18 September 2012 - 8:26pm

Page edited by Thom Carter

View Online Thom Carter 2012-09-18T20:26:05Z

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Benefits of Digital Preservation - Bishopsgate Institute

OPF Wiki Activity Feed - 18 September 2012 - 8:22pm

Page edited by Thom Carter

View Online Thom Carter 2012-09-18T20:22:16Z

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Vectorworks 2013 Released - Ten Links

Google News Search: "new file format" - 18 September 2012 - 6:54pm

Ten Links
Vectorworks 2013 Released
Ten Links
Greater interoperability: Enhancements to already robust file imports and exports, such as IFC, DWG/DXF and ODBC, plus new file format support for Rhinoceros 3DM, DWF, FBX, COLLADA and gbXML make the Vectorworks platforms the most interoperable ...

and more »Google News

Categories: Technology Watch

Re: Valid and well-formed TIFF's with scanline corruption

OPF Wiki Activity Feed - 18 September 2012 - 6:35pm

Comment added by Gary McGath

Here are some quick thoughts.

TIFF scan lines can be encoded by quite a number of different ways. For a short-term project, it would make more sense to use an existing library, such as LibTiff, rather than implementing all the necessary decodings.

LibTiff provides three ways to read scan line data: by scanlines, strips, and tiles. Scanlines aren't actually a separate way to store the data, but are provided as a simplified interface and aren't usable in all cases. It probably makes the most sense to use TIFFReadStrip and TIFFReadTile (or perhaps the "encoded" version) and check for returned errors. It shouldn't be necessary to do anything more with the data than make sure it's read without reporting an error.

View Online Gary McGath 2012-09-18T18:35:53Z

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