libraw

LibRaw is an open-source software library designed for reading and processing raw image files produced by digital cameras. It provides developers with a C++-based toolset to decode raw image data, extract metadata, and perform initial image processing tasks such as demosaicing, color correction, and lens distortion adjustment. LibRaw is a core component in many image editing and processing applications, enabling access to the unprocessed image data directly from a wide range of camera models.

Originally derived from the DCRaw project, LibRaw offers improved performance and extended support for newer camera formats. It supports numerous raw formats from manufacturers including Canon, Nikon, Sony, Fujifilm, Olympus, and Panasonic, among others. Its compatibility with multiple operating systems such as Windows, macOS, and Linux makes it a versatile tool for developers and photographers alike.

LibRaw is known for its efficiency in handling large raw files, allowing for high-resolution image processing without significant performance degradation. It exposes a comprehensive set of parameters for fine-tuning image output, such as exposure, white balance, and noise reduction. The library is distributed under the GNU General Public License (GPL), encouraging community collaboration and continuous improvement.

Many popular open-source and commercial photo editing software, including darktable and RawTherapee, incorporate LibRaw to facilitate raw image decoding. Its development is actively maintained by a community of contributors committed to expanding supported formats and enhancing functionality.

Overall, LibRaw plays a vital role in the open-source ecosystem for raw image processing, providing a robust foundation for high-quality image development from raw sensor data.