Alias PIX
Dexvertbot (Talk | contribs) (→Sample files) |
|||
| (One intermediate revision by one user not shown) | |||
| Line 2: | Line 2: | ||
|formattype=electronic | |formattype=electronic | ||
|subcat=Graphics | |subcat=Graphics | ||
| − | |extensions={{ext|img}}, {{ext| | + | |extensions={{ext|img}}, {{ext|pix}}, {{ext|als}}, others |
|pronom={{PRONOM|fmt/1092}} | |pronom={{PRONOM|fmt/1092}} | ||
| + | |wikidata={{wikidata|Q28205670}}, {{wikidata|Q30311736}} | ||
}} | }} | ||
| − | '''Alias PIX''' is a raster image file format. It | + | '''Alias PIX''' is a raster image file format. It contains a 24-bit "true color" image, compressed with [[run-length encoding]]. |
| − | + | For practical purposes, it is identical to [[Vivid IMG]] format, though there might be a small difference in how the unimportant fields are defined. | |
| + | |||
| + | There is also a (rare?) 8-bit single-sample variant, which might technically be called "Matte" format, instead of "PIX". | ||
== Disambiguation == | == Disambiguation == | ||
| − | + | Not to be confused with [[RLA]]. PIX and RLA are different formats that are both related to the terms "Alias" and "Wavefront". | |
| − | == Format == | + | == Format details == |
An Alias PIX file has a 10 byte header, followed by the pixel data. | An Alias PIX file has a 10 byte header, followed by the pixel data. | ||
| − | + | == Identification == | |
| + | Robust identification of an Alias PIX file from its contents is challenging. | ||
| + | |||
| + | The field at offset 8 is 24 ({{magic|00 18}}), or 8 for Matte format. | ||
| + | |||
| + | The field at offset 4 (x-offset) is almost always 0. | ||
| + | |||
| + | The field at offset 6 (y-offset) is almost always 0, or one less than the height, or equal to the height. | ||
| + | |||
| + | Other tests could be to check that the dimensions seem sane, or to decompress part of the image and check for errors. | ||
| + | |||
| + | == Specifications == | ||
| + | * [https://www.martinreddy.net/gfx/2d/PIX.txt Alias PIX File Format Information] | ||
| + | * [https://download.autodesk.com/us/alias/2012help/files/GUID-FD35BBF5-820E-43C8-81DC-4BA6E1F9D86-1476.htm Autodesk website: Alias Pix image file] | ||
| + | * [https://download.autodesk.com/us/alias/2012help/files/GUID-3F9E1BF1-F8A0-4374-BA2A-5A2D5DEFC79-1477.htm Autodesk website: Matte file] | ||
| + | |||
| + | See also [[Vivid IMG#Specifications]]. | ||
== Software == | == Software == | ||
| − | * [[ImageMagick]] (format named "PIX" | + | * [[ImageMagick]] (format named "PIX") |
* {{Deark}} | * {{Deark}} | ||
* [[XnView]] | * [[XnView]] | ||
| + | * [[Image Alchemy]] | ||
== Sample files == | == Sample files == | ||
* {{DexvertSamples|image/aliasPIX}} | * {{DexvertSamples|image/aliasPIX}} | ||
| − | |||
| − | |||
| − | |||
Latest revision as of 13:34, 16 December 2025
Alias PIX is a raster image file format. It contains a 24-bit "true color" image, compressed with run-length encoding.
For practical purposes, it is identical to Vivid IMG format, though there might be a small difference in how the unimportant fields are defined.
There is also a (rare?) 8-bit single-sample variant, which might technically be called "Matte" format, instead of "PIX".
Contents |
[edit] Disambiguation
Not to be confused with RLA. PIX and RLA are different formats that are both related to the terms "Alias" and "Wavefront".
[edit] Format details
An Alias PIX file has a 10 byte header, followed by the pixel data.
[edit] Identification
Robust identification of an Alias PIX file from its contents is challenging.
The field at offset 8 is 24 (00 18), or 8 for Matte format.
The field at offset 4 (x-offset) is almost always 0.
The field at offset 6 (y-offset) is almost always 0, or one less than the height, or equal to the height.
Other tests could be to check that the dimensions seem sane, or to decompress part of the image and check for errors.
[edit] Specifications
- Alias PIX File Format Information
- Autodesk website: Alias Pix image file
- Autodesk website: Matte file
See also Vivid IMG#Specifications.
[edit] Software
- ImageMagick (format named "PIX")
- Deark
- XnView
- Image Alchemy
