OpenImageIO is an

open source Open source is source code that is made freely available for possible modification and redistribution. Products include permission to use the source code, design documents, or content of the product. The open-source model is a decentralized sof ...

library A library is a collection of materials, books or media that are accessible for use and not just for display purposes. A library provides physical (hard copies) or digital access (soft copies) materials, and may be a physical location or a vi ...

for reading and writing images. Support for different image formats is realised through

plugins Plug-in, plug in or plugin may refer to: * Plug-in (computing) is a software component that adds a specific feature to an existing computer program. ** Audio plug-in, adds audio signal processing features ** Photoshop plugin, a piece of software t ...

. The project is distributed with a modified

BSD license BSD licenses are a family of permissive free software licenses, imposing minimal restrictions on the use and distribution of covered software. This is in contrast to copyleft licenses, which have share-alike requirements. The original BSD li ...

History

Project ''OpenImageIO'' started as ''ImageIO'' - an

API An application programming interface (API) is a way for two or more computer programs to communicate with each other. It is a type of software interface, offering a service to other pieces of software. A document or standard that describes how ...

that was part of

Gelato Gelato (; ) is the common word in Italian for all kinds of ice cream. In English, it specifically refers to a frozen dessert of Italian origin. Artisanal gelato in Italy generally contains 6%–9% butterfat, which is lower than other styl ...

, the renderer software developed by

nVidia Nvidia CorporationOfficially written as NVIDIA and stylized in its logo as VIDIA with the lowercase "n" the same height as the uppercase "VIDIA"; formerly stylized as VIDIA with a large italicized lowercase "n" on products from the mid 1990s to ...

. Work on ''ImageIO'' started in 2002. In the same year the specification of the API and its header files was released under BSD license. In 2007, when the project Gelato was stopped, the development of ''ImageIO'' also ceased. After this Larry Gritz started a new project - ''OpenImageIO''. In April 2009 ''OpenImageIO'' was accepted into the

Google Summer of Code The Google Summer of Code, often abbreviated to GSoC, is an international annual program in which Google awards stipends to contributors who successfully complete a free and open-source software coding project during the summer. , the program is ...

program with four student slots. September 2009 marked the release of ''

Cloudy with a Chance of Meatballs ''Cloudy with a Chance of Meatballs'' is a children's book written by Judi Barrett and illustrated by Ron Barrett. It was first published in 1978 by Atheneum Books, followed by a 1982 trade paperback edition from sister company Aladdin Paperb ...

'', the first full-length

feature film A feature film or feature-length film is a narrative film (motion picture or "movie") with a running time long enough to be considered the principal or sole presentation in a commercial entertainment program. The term ''feature film'' originall ...

in whose production ''OpenImageIO'', alongside '' OpenShadingLanguage'', has been used as the texturing engine.

Applications

OpenImageIO library comes with a few applications that demonstrate its features: * iconvert - converts image files from one format to another * idiff - compare two images, print information on how much they differ * iinfo - prints basic (width and height of the image and its color depth) or detailed ( metadata) information about the given image * igrep - searches images for matching metadata * iv - a simple image viewer * maketx - a

mipmap In computer graphics, mipmaps (also MIP maps) or pyramids are pre-calculated, optimized sequences of images, each of which is a progressively lower resolution representation of the previous. The height and width of each image, or level, in the ...

generation tool

Supported formats

As of January 2018 the library supports the following formats:

OpenEXR OpenEXR is a high-dynamic range, multi-channel raster file format, released as an open standard along with a set of software tools created by Industrial Light & Magic (ILM), under a free software license similar to the BSD license. It is notab ...

, HDR/ RGBE,

TIFF Tag Image File Format, abbreviated TIFF or TIF, is an image file format for storing raster graphics images, popular among graphic artists, the publishing industry, and photographers. TIFF is widely supported by scanning, faxing, word processin ...

JPEG JPEG ( ) is a commonly used method of lossy compression for digital images, particularly for those images produced by digital photography. The degree of compression can be adjusted, allowing a selectable tradeoff between storage size and im ...

JFIF The JPEG File Interchange Format (JFIF) is an image file format standard published as ITU-T Recommendation T.871 and ISO/IEC 10918-5. It defines supplementary specifications for the container format that contains the image data encoded with the J ...

, PNG,

Truevision TGA Truevision TGA, often referred to as TARGA, is a raster graphics file format created by Truevision Inc. (now part of Avid Technology). It was the native format of TARGA and VISTA boards, which were the first graphic cards for IBM-compatible ...

, BMP,

ICO is an action-adventure game developed by Japan Studio and Team Ico, and published by Sony Computer Entertainment, released for the PlayStation 2 video game console in 2001 and 2002 in various regions. It was designed and directed by Fumito U ...

FITS Flexible Image Transport System (FITS) is an open standard defining a digital file format useful for storage, transmission and processing of data: formatted as multi-dimensional arrays (for example a 2D image), or tables. FITS is the most comm ...

as well as BMP, JPEG-2000, RMan Zfile, FITS, DDS, Softimage PIC, PNM, DPX, Cineon, IFF, Field3D, Ptex, Photoshop PSD, Wavefront RLA, SGI, WebP, GIF. In addition, video files are supported through

FFmpeg FFmpeg is a free and open-source software project consisting of a suite of libraries and programs for handling video, audio, and other multimedia files and streams. At its core is the command-line ffmpeg tool itself, designed for processing of ...

and raw camera formats are supported through

LibRaw LibRaw is a free and open-source software library for reading raw files from digital cameras. It supports virtually all raw formats. It is based on the source code of dcraw, with modifications, and "is intended for embedding in raw converters, d ...

References

External links

* {{Official website, sites.google.com/site/openimageio/ Graphics libraries C++ libraries Software using the BSD license

History

Applications

Supported formats

See also

References

External links