OpenRAW based on CHDK - possible? - RAW Shooting and Processing - CHDK Forum
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OpenRAW based on CHDK - possible?

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Offline dvornik

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OpenRAW based on CHDK - possible?
« on: 02 / February / 2008, 19:24:03 »
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It seems like OpenRAW project is not progressing at all.

Can the programmers involved in the CHDK project create an open file format based on their work? I'm not a programmer and I don't know what's involved. I know that many RAW processing software developers refuse to fully support DNG because of the propriatary nature of it.  So maybe try and create an open fully documented RAW format that can be used at least by the open source community.

Essentially, is there a way to create a format that will be an independant alternative to DNG? And name it .OPN or .OPR or something...
« Last Edit: 02 / February / 2008, 19:30:21 by dvornik »
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Offline ArtDen

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Re: OpenRAW based on CHDK - possible?
« Reply #1 on: 03 / February / 2008, 01:30:45 »
Which RAW converters support OpenRAW?
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Offline vit40

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Re: OpenRAW based on CHDK - possible?
« Reply #2 on: 03 / February / 2008, 09:31:31 »
I don't see any reason for another dng-like format
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Offline whoever

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Re: OpenRAW based on CHDK - possible?
« Reply #3 on: 03 / February / 2008, 13:16:38 »
CHDK RAW is perfectly open and documented. Documentation can be boiled down to a single phrase: "10-bit RGGB Bayer pattern".
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Offline ArtDen

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Re: OpenRAW based on CHDK - possible?
« Reply #4 on: 03 / February / 2008, 23:40:11 »
Quote from: whoever on 03 / February / 2008, 13:16:38
CHDK RAW is perfectly open and documented. Documentation can be boiled down to a single phrase: "10-bit RGGB Bayer pattern".
Not only RGGB. Color combination may differ (in A720 or S5 for example)
« Last Edit: 04 / February / 2008, 02:15:41 by ArtDen »
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Offline mx3

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Re: OpenRAW based on CHDK - possible?
« Reply #5 on: 04 / February / 2008, 00:26:58 »
Quote from: dvornik on 02 / February / 2008, 19:24:03
I know that many RAW processing software developers refuse to fully support DNG because of the propriatary nature of it. 

What are you talking about?
http://www.adobe.com/products/dng/
Within one year of introduction, several dozen software manufacturers such as Extensis, Canto, Apple, and iView have developed support for DNG. And respected camera manufacturers Hasselblad, Leica, Ricoh, and Samsung have introduced cameras that provide direct DNG support. Learn more.

Software developers and manufacturers can download the complete DNG specification (PDF, 300K).
http://www.adobe.com/products/dng/pdfs/dng_spec.pdf

somewhere I have seen talk about source code (by adobe) to work with DNG file format
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Offline mx3

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Re: OpenRAW based on CHDK - possible?
« Reply #6 on: 04 / February / 2008, 01:05:24 »
I downloaded DNG SDK and it contain full(?) source code to read and write DNG files

only closed (propriatary)  code can be in XMP SDK subsection of DNG SDK
XMP= Extensible Metadata Platform

Adobe's Extensible Metadata Platform (XMP) is a labeling technology that allows you to embed data about a file, known as metadata, into the file itself. More information on how partners and standards are using XMP is available at the XMP website.

The XMP Toolkit allows you to integrate XMP functionality into your product or solution. It supports Macintosh, Windows, as well as UNIX and comes with samples, documentation, source code and project files. The XMP Toolkit is available under the BSD license.

hm. have BSD license forces to publish sources?
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Offline mx3

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Re: OpenRAW based on CHDK - possible?
« Reply #7 on: 04 / February / 2008, 01:12:34 »
Adobe XMP Developer Center
http://www.adobe.com/devnet/xmp/


I have downloaded XMP SDK and not found any .lib files .
there are only source files
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Offline dvornik

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Re: OpenRAW based on CHDK - possible?
« Reply #8 on: 04 / February / 2008, 02:21:36 »
My favorite RAW converter is Bibble. They refuse to support converting from non-native DNG and they are very persuasive.

http://support.bibblelabs.com/webboard/viewtopic.php?t=8133&highlight=dng

OpenRAW people also oppose DNG.

As I see it DNG is a propriatary format that is at the mercy of Adobe.

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Offline mx3

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Re: OpenRAW based on CHDK - possible?
« Reply #9 on: 04 / February / 2008, 02:35:09 »
hahaha.
I think they (openraw devs) are wrong

several independent companies have developed DNG format.
source code is available.
no need for reverse engeenering

why not include it into converter?
and I'm really don't understand why would be needed converter for .DNG file?
any new image processing software can process these files
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