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Gain-map ("Ultra HDR") JPEG support: read, assemble, and generate Adobe hdrgm 1.0 / Android Ultra HDR v1 gain-map JPEGs (GContainer XMP + MPF, the form Chromium renders as HDR). Splices metadata around baseline JPEGs from any encoder (the IccInjector pattern), decodes both renditions via SharpAstro.Jpeg, and reconstructs display-adaptive HDR linear floats. Pure-managed, AOT-compatible.

Total Downloads
7.5K
7,537
Published
Sep 11, 2026
Latest stable version

Install

.NET CLI
dotnet add package SharpAstro.Jpeg.GainMap --version 3.14.871+43ac2412bbc86a491c7bc41d48c6828f0b8af1f1
Package Manager Console
Install-Package SharpAstro.Jpeg.GainMap -Version 3.14.871+43ac2412bbc86a491c7bc41d48c6828f0b8af1f1
PackageReference
<PackageReference Include="SharpAstro.Jpeg.GainMap" Version="3.14.871+43ac2412bbc86a491c7bc41d48c6828f0b8af1f1" />

Frameworks

net10.0

Dependencies

[3.14.871, )

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