Lumaed3

Lumaed3 is a software library designed to enable real-time luminance processing and exposure control in digital video workflows. It offers a modular, plugin-friendly pipeline for luminance estimation, gamma correction, color space conversion, and tone mapping, with an emphasis on low latency and cross-platform compatibility.

Originating as a community project in 2018, lumaed3 was intended to provide a transparent, extensible alternative to proprietary pipelines. The project adopted semantic versioning, and version 3 introduced a GPU-accelerated backend and enhanced HDR support, along with broader language bindings.

Architecture and features: The core is a node-based processing graph that can be composed of modules such as luminance analyzers, tone-mapping operators, white balance modules, and color-management transformers. Implementations are in C++ with bindings for Python and JavaScript. It supports HDR formats (HDR10/HLG), Rec.709 and Rec.2020, and can leverage CUDA or OpenCL for acceleration.

Usage: lumaed3 targets video production, broadcast workflows, and research settings. It provides both a command-line tool and a programmatic API, plus sample pipelines for common tasks like exposure control, color grading, and scene-referred rendering. The project maintains extensive documentation and a test suite.

Reception: In community discussions, lumaed3 is praised for its clarity of design and ease of extension, though users report variability in performance depending on hardware and driver support. See also: OpenCV, FFmpeg.