dcraw is an open-source computer program which is able to read numerous raw image format files, typically produced by mid-range and high-end digital cameras. dcraw converts these images into the standard TIFF and PPM image formats. This conversion is sometimes referred to as developing a raw image (by analogy with the process of film development) since it renders raw image sensor data (a "digital negative") into a viewable form.
A number of other image processing programs use dcraw internally to enable them to read raw files.
Development of dcraw began on February 23, 1997. Version 1.0 was released in revision 1.18, on May 5, 2000.[3] Versions up to 3.15 used the name Canon PowerShot Converter, starting with v3.40 the name was Raw Photo Decoder, switching to Raw Photo Decoder "dcraw" in v5.70. Version 8.86 supported 300 cameras.[1]
The development has stalled, with only two releases since May 2015 and the last release dated June 2018,[1] but parts of dcraw are included in LibRaw.
While most camera manufacturers supply raw image decoding software for their cameras, this software is almost always proprietary, and often becomes unsupported when a camera model is discontinued. The file formats themselves are often undocumented, and several manufacturers have gone so far as to encrypt all or part of the data in their raw image format, in an attempt to prevent third-party software from accessing it.[4]
Given this ever-expanding plethora of raw image formats, and uncertain and inconsistent support for them by the manufacturers, many photographers worry that their valuable raw images may become unreadable as the applications and operating systems required become obsolete.[5]
In contrast to proprietary decoding software, dcraw strives for simplicity, portability, and consistency, as expressed by its author:
So here is my mission: Write and maintain an ANSI C program that decodes any raw image from any digital camera on any computer running any operating system.
Designedit
Screenshot of dcraw v. 8.99
Because many raw image formats are specific to one make or model of camera, dcraw is frequently updated to support new models. For many proprietary raw image formats, dcraw's source code (based largely on reverse-engineering) is the best—or only—publicly available documentation. dcraw currently supports the raw formats of several hundred cameras.[6]
dcraw is built around the Unix philosophy. The program is a command line tool which takes a list of raw image files to process, along with any image adjustment options desired. dcraw also serves as the basis for various high-level raw image-processing applications (such as viewers and converters), both free and open source software as well as proprietary software.
GUI front-endsedit
Several GUIfront-ends for dcraw are available. These applications use dcraw as a back-end to do the actual processing of raw images, but present a graphical interface with which the image processing options can be adjusted.
AZImage – image converter (uses LibRaw rather than dcraw) for Windows
darktable – a standalone raw developer for Windows, Linux, and macOS
^Larry Strunk (2006-03-19). . OpenRAW. Archived from the original on 2007-12-10.
^. Archived from the original on 2016-10-19. Retrieved 2005-10-25.
External linksedit
Wikimedia Commons has media related to DCRaw.
Official website
dcraw compiled for Microsoft Windows by Axel Rietschin
dcraw compiled for Microsoft Windows by Bartłomiej Okonek
April 12, 2024
dcraw, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, dcraw, news, newspapers, books, scholar, jstor, march, 2015, . This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Dcraw news newspapers books scholar JSTOR March 2015 Learn how and when to remove this template message dcraw is an open source computer program which is able to read numerous raw image format files typically produced by mid range and high end digital cameras dcraw converts these images into the standard TIFF and PPM image formats This conversion is sometimes referred to as developing a raw image by analogy with the process of film development since it renders raw image sensor data a digital negative into a viewable form dcrawOriginal author s Dave CoffinInitial release23 February 1997 27 years ago 1997 02 23 1 Stable release9 28 1 June 2018 5 years ago 2018 06 01 2 Written inANSI COperating systemCross platformPlatformPlatform independentAvailable inEnglish and 11 othersTyperaw decoding softwareLicenseGPLv2 Websitewww wbr dechifro wbr org wbr dcraw wbr A number of other image processing programs use dcraw internally to enable them to read raw files Development of dcraw began on February 23 1997 Version 1 0 was released in revision 1 18 on May 5 2000 3 Versions up to 3 15 used the name Canon PowerShot Converter starting with v3 40 the name was Raw Photo Decoder switching to Raw Photo Decoder dcraw in v5 70 Version 8 86 supported 300 cameras 1 The development has stalled with only two releases since May 2015 and the last release dated June 2018 1 but parts of dcraw are included in LibRaw Contents 1 Motivation 2 Design 3 GUI front ends 4 References 5 External linksMotivation editWhile most camera manufacturers supply raw image decoding software for their cameras this software is almost always proprietary and often becomes unsupported when a camera model is discontinued The file formats themselves are often undocumented and several manufacturers have gone so far as to encrypt all or part of the data in their raw image format in an attempt to prevent third party software from accessing it 4 Given this ever expanding plethora of raw image formats and uncertain and inconsistent support for them by the manufacturers many photographers worry that their valuable raw images may become unreadable as the applications and operating systems required become obsolete 5 In contrast to proprietary decoding software dcraw strives for simplicity portability and consistency as expressed by its author So here is my mission Write and maintain an ANSI C program that decodes any raw image from any digital camera on any computer running any operating system Design edit nbsp Screenshot of dcraw v 8 99Because many raw image formats are specific to one make or model of camera dcraw is frequently updated to support new models For many proprietary raw image formats dcraw s source code based largely on reverse engineering is the best or only publicly available documentation dcraw currently supports the raw formats of several hundred cameras 6 dcraw is built around the Unix philosophy The program is a command line tool which takes a list of raw image files to process along with any image adjustment options desired dcraw also serves as the basis for various high level raw image processing applications such as viewers and converters both free and open source software as well as proprietary software GUI front ends editSeveral GUI front ends for dcraw are available These applications use dcraw as a back end to do the actual processing of raw images but present a graphical interface with which the image processing options can be adjusted AZImage image converter uses LibRaw rather than dcraw for Windows darktable a standalone raw developer for Windows Linux and macOS dcraw assist for Linux dcRAW X for macOS digiKam for Linux DNG Viewer by ideaMK raw image viewer for Windows EasyHDR for Windows gimp dcraw GIMP plug in for Windows Linux and macOS Helicon Filter photo editor can use dcraw for raw processing for Windows Konvertor for Windows nUFRaw a standalone raw developer a new version of UFRaw for Linux Phiewer for macOS RAWDrop for Windows Rawstudio a standalone raw developer for Linux SilkRaw exports embedded thumbnails and launch batch conversion for Amiga OS4 AROS and MorphOS SNS HDR for Windows UFRaw a standalone raw developer and GIMP plug in for Windows Linux and macOS Mass Image Compressor Bulk image compressor for Windows uses dcraw to read and convert the images to JPEG References edit nbsp Free and open source software portal a b c Dave Coffin 2018 dcraw c v complete unabridged RCS file Archived from the original on 2019 01 29 Retrieved 2019 12 19 update Index of dcraw archive Retrieved 21 February 2020 According to the Revision Control System log Raw storm in a teacup Digital Photography Review 2005 04 27 Larry Strunk 2006 03 19 The RAW Problem OpenRAW Archived from the original on 2007 12 10 Decoding raw digital photos in Linux Archived from the original on 2016 10 19 Retrieved 2005 10 25 External links edit nbsp Wikimedia Commons has media related to DCRaw Official website nbsp dcraw compiled for Microsoft Windows by Axel Rietschin dcraw compiled for Microsoft Windows by Bartlomiej Okonek Retrieved from https en wikipedia org w index php title Dcraw amp oldid 1215134123, wikipedia, wiki, book, books, library,
