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ORA in sintesi
ORA
OpenRaster emerged from the libre graphics community as a practical answer to the lack of a clean open interchange format for layered raster artwork.
PGM Raw in sintesi
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.
Confronto tra formati
| Caratteristica | ORA | PGM Raw |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2006 | 1988 |
| Inventor | Libre Graphics community | Jef Poskanzer |
| Status | active | active |
| Transparency | Non supportato | Non supportato |
| Animation | Non supportato | Non supportato |
| Primary use cases |
|
|
| Layer support | Supportato | Non supportato |
| Vector scaling | Non supportato | Non supportato |
| Camera raw data | Non supportato | Non supportato |
| HDR support | Non supportato | Non supportato |
| Streaming ready | Non supportato | Non supportato |
Quando usare ciascun formato
When to use ORA
- Your source file is already in ORA.
- Preserve source expectations before exporting to PGM Raw.
- ORA is commonly used in image workflows.
When to use PGM Raw
- Your target workflow expects PGM Raw.
- Improve delivery compatibility with PGM Raw.
- PGM Raw is commonly used in image workflows.
Domande frequenti
Why convert ORA to PGM Raw?
Convert to PGM raw when a pipeline needs direct grayscale raster data for vision research, microscopy or scientific-image preprocessing, algorithm tests, or command-line tooling where minimal format overhead matters.
It is particularly useful as an intermediate format between automated processing steps.
What changes when converting ORA to PGM Raw?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to PGM Raw removes layer support.
What should I review after converting ORA to PGM Raw?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.