Palm Database ImageViewer
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It appears to be a paletted format supporting up to 16 colors. Images may be uncompressed, or use [[Run-length encoding|RLE]] compression. | It appears to be a paletted format supporting up to 16 colors. Images may be uncompressed, or use [[Run-length encoding|RLE]] compression. | ||
| + | |||
| + | == Discussion == | ||
| + | The ImageViewer format has been decoded fairly completely, but as far as we can tell, no one has ever bothered to write any documentation about it – only source code. | ||
| + | |||
| + | The ''imgvtopnm'' software (also called ''imgvtopgm'', apparently) by Eric Howe, released around 1997, is significant. See the README file in that software for information about its origins. | ||
| + | |||
| + | [[Netpbm]]'s code was derived from Howe's software. [[ImageMagick]] also has source code for reading and writing this format. | ||
== Identification == | == Identification == | ||
| − | ASCII characters | + | ASCII characters {{magic|vIMGView}} appear at file offset 60. |
== Software == | == Software == | ||
* [[ImageMagick]] (format named "PDB") | * [[ImageMagick]] (format named "PDB") | ||
* [[Netpbm]] (v10.52+): pdbimgtopam, pamtopdbimg | * [[Netpbm]] (v10.52+): pdbimgtopam, pamtopdbimg | ||
| + | * [https://sourceforge.net/projects/imgvtopgm/ imgvtopgm/imgvtopnm] | ||
== Sample files == | == Sample files == | ||
| + | * http://cd.textfiles.com/pdasoftware/PILOT/ ... | ||
| + | ** E.g. [http://cd.textfiles.com/pdasoftware/PILOT/TRAVEL/ TRAVEL/], [http://cd.textfiles.com/pdasoftware/PILOT/INFO/ELECTRON/ ELECTRON/] | ||
| + | * [https://sourceforge.net/projects/imgvtopgm/ imgvtopgm-2.0.tar.gz] → samples/*.pdb | ||
* [http://www.memoware.com/ MemoWare] → [http://www.memoware.com/?screen=advanced_search Advanced search] → Search for "FireViewer" or "TinyViewer" format | * [http://www.memoware.com/ MemoWare] → [http://www.memoware.com/?screen=advanced_search Advanced search] → Search for "FireViewer" or "TinyViewer" format | ||
[[Category:Palm]] | [[Category:Palm]] | ||
Revision as of 16:26, 1 September 2017
Palm Database ImageViewer format is a type of PalmOS Database file. It contains a bitmap image, and is associated with the Image Viewer III application.
It is apparently also known as FireViewer or TinyViewer format. We have not been able to determine the differences, if any, between the formats supported by these applications.
It appears to be a paletted format supporting up to 16 colors. Images may be uncompressed, or use RLE compression.
Contents |
Discussion
The ImageViewer format has been decoded fairly completely, but as far as we can tell, no one has ever bothered to write any documentation about it – only source code.
The imgvtopnm software (also called imgvtopgm, apparently) by Eric Howe, released around 1997, is significant. See the README file in that software for information about its origins.
Netpbm's code was derived from Howe's software. ImageMagick also has source code for reading and writing this format.
Identification
ASCII characters vIMGView appear at file offset 60.
Software
- ImageMagick (format named "PDB")
- Netpbm (v10.52+): pdbimgtopam, pamtopdbimg
- imgvtopgm/imgvtopnm
Sample files
- http://cd.textfiles.com/pdasoftware/PILOT/ ...
- imgvtopgm-2.0.tar.gz → samples/*.pdb
- MemoWare → Advanced search → Search for "FireViewer" or "TinyViewer" format
