This is not a production ready raw reader, just a personal project I started while studying digital image processing. If you need a complete, fully functional library, check dcraw out.
Currently the only format supported is uncompressed, linear (demosaiced) Adobe DNG. Reading TIFF metadata is also supported.
I decided to support DNG first because, unlike proprietary formats such as Canon's CR2 or Nikon's .NEF, DNG is open and has its specification publicly available. Also, virtually all widely used raw formats are TIFF-based, like DNG, so if you can read it, you are more than halfway done reading any raw file format.
You can use Adobe Camera Raw and DNG Converter to convert your raw files to DNG.
I am looking for contributors willing to help me implement support for reading nonlinear compressed data. While uncompressed linear is specific to DNG, nonlinear compressed is the same format used by Canon and Nikon.
Keep in mind TIFF is a decades old file format that has been receiving extensions for as long as has existed. It's full of idiosyncrasies and I strongly encourage you to read the following specifications before proceeding:
- TIFF Revision 6.0 Final - June 3, 1992
- TIFF Technical Note 1: TIFF Trees
- ISO 12234-2:2001, Electronic still-picture imaging – Removable memory – Part 2: TIFF/EP image data format
- Digital Negative Specification Version 1.4.0.0
- CIE 1931 XYZ
- CIE 1976 (L*, u*, v*)
- CIE LCHuv
- sRGB
- LSH (CIE LCHuv, with chroma C replaced with saturation S = C/L)
com.github.gasrios.raw.processor.TiffProcessorEngine
uses com.github.gasrios.raw.processor.TiffProcessor
implemented by com.github.gasrios.raw.processor.AbstractTiffProcessor
extended by com.github.gasrios.raw.processor.DngProcessor
extended by com.github.gasrios.raw.editor.CommandLineInvoker
uses com.github.gasrios.raw.editor.Editor
com.github.gasrios.raw.editor.Library
Bridges the gap between (1) reading a TIFF file (see com.github.gasrios.raw.data.ImageFileDirectoryLoader and com.github.gasrios.raw.io.TiffInputStream) and making its information available in an easy to use fashion (see com.github.gasrios.raw.data.ImageFileDirectory) and (2) writing code that actually processes this information.
This interface provides consumer methods called by TiffProcessorEngine when content is available and ready to be processed. By implementing this interface you can manipulate TIFF images as you see fit.
Provides empty implementations of com.github.gasrios.raw.processor.TiffProcessor methods you do not care about, so you can only focus on the stuff you need.
This class makes all transformations deemed too complex to be at com.github.gasrios.raw.data.ImageFileDirectoryLoader when processing the high resolution image IFD:
- Reads image strips and converts them to a width X height pixel matrix;
- Converts camera coordinates to XYZ D50 values;
This pretty much ends all the dirty work needed to read the TIFF file, and makes its information available to people whose business is doing actual photo editing.
com.github.gasrios.raw.processor.DngProcessor subclass that provides an easy to use command line caller for image editors.
Usage: java com.github.gasrios.raw.CommandLineEditorInvoker <AnEditor implements com.github.gasrios.raw.editor.Editor> image.dng
A simple interface called from com.github.gasrios.raw.editor.CommandLineEditorInvoker. The point is to make image editing as simple as possible.
Utility methods to save, display and manipulate images.
See raw-examples.
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 3 of the License.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.
This software uses Adobe XMP Toolkit for Java, licensed under the BSD license.
Copyright (c) 2009, Adobe Systems Incorporated All rights reserved.
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