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PGM Raw in het kort
PGM Raw
The raw PGM branch reflects the practical evolution of Netpbm-style tool formats: keep the tiny header and easy parsing, but move the pixel raster into a binary form that is much more usable for real data sizes.
JPF in het kort
JPF
JPEG 2000 arrived as a major standards effort to improve on classic JPEG, but its practical adoption concentrated in specialist domains rather than in the universal browser-and-camera role held by JPEG.
Formaatvergelijking
| Kenmerk | PGM Raw | JPF |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1988 | 2000 |
| Inventor | Jef Poskanzer | Joint Photographic Experts Group |
| Status | active | active |
| Transparency | Niet ondersteund | Niet ondersteund |
| Animation | Niet ondersteund | Niet ondersteund |
| Primary use cases |
|
|
| Layer support | Niet ondersteund | Niet ondersteund |
| Vector scaling | Niet ondersteund | Ondersteund |
| Camera raw data | Niet ondersteund | Niet ondersteund |
| HDR support | Niet ondersteund | Niet ondersteund |
| Streaming ready | Niet ondersteund | Niet ondersteund |
Wanneer je elk formaat gebruikt
When to use PGM Raw
- Your source file is already in PGM Raw.
- Preserve source expectations before exporting to JPF.
- PGM Raw is commonly used in image workflows.
When to use JPF
- Your target workflow expects JPF.
- Improve delivery compatibility with JPF.
- JPF is commonly used in image workflows.
Veelgestelde vragen
Why convert PGM Raw to JPF?
Convert to JPF when a standards-based JPEG 2000 workflow explicitly expects that container variant.
It is useful in specialist preservation and institutional imaging systems.
What changes when converting PGM Raw to JPF?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to JPF adds vector scaling.
What should I review after converting PGM Raw to JPF?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.