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Changelog

HyBIG follows semantic versioning. All notable changes to this project will be documented in this file. The format is based on Keep a Changelog.

[2.7.0] - 2026-05-11

Changed

  • GITC-8962: Memory and performance optimization for reading data from source when width and height or scale size parameters are not the full resolution of the data.
  • GITC-9016: Skip outputting tiles that contain all-NaN pixels as a bug fix and performance optimization.

[v2.6.2] - 2026-04-14

Changed

  • Update Pillow to version 12.2.0

v2.6.1 - 2026-01-14

Changed

  • Bugfix for v2.6.0 to fix regression test failure.

v2.6.0 - 2026-01-14

Changed

  • Refactored code be more memory efficient, reducing peak memory usage when processing large granules by about 90% at no performance hit. This is accomplished by fundamentally changing the way data is read, doing away with rioxarray and instead using rasterio directly. The DatasetReader allows for windowed reads into the source data, at the expense of having to reimplement the mask_and_scale functionality that is provided by rioxarray.
  • Minor changes related to resolving tech debt and code quality improvements throughout.

v2.5.1 - 2026-01-06

Changed

  • GitHub release notes for HyBIG will now include the commit history for that release.

  • Service libraries updated to address vulnerabilities.

v2.5.0 - 2026-12-03

Changed

  • Correctly handle clipping behavior for values outside the colormap range

v2.4.2 - 2025-10-28

Changed

  • Dynamically determine nodata index based on where it is supplied in the remote/embedded color table for a product.

v2.4.1 - 2025-06-23

Changed

  • Fix bug with JPEG driver on single-banded input granules. Since we are now palettizing where possible since 2.4.0, this creates an issue when trying to output in JPEG since color palettes (and transparency) are not supported.

v2.4.0 - 2025-04-28

Changed

  • Fix rasterization issues with palettized granules. Source images now retain their palette in a scaled form, rather than reinterpreting the palette. [#50]
  • Minor bugfixes and type formatting improvements.

v2.3.0 - 2025-02-26

Changed

  • Fix images that cross the antimeridian. Target extents are corrected when the bounding box crosses the dateline. [#48]

v2.2.0 - 2024-12-19

Changed

  • NODATA and TRANSPARENT values are merged. [#41]
    • User visible change: paletted PNG output images will have up to 254 color values and a 255th value that is transparent.
    • Internal code changes: removes TRANSPARENT_IDX (254) and uses NODATA_IDX (255) in its stead. A color of (0,0,0,0) was previously set to both the indexes (254 and 255) in the output PNGs and now only 255 will have this value. This change ensures the round-trip from single band to RGBA to Paletted PNG is consistent.

v2.1.0 - 2024-12-13

Changed

  • Input GeoTIFF RGB[A] images are no longer palettized when converted to a PNG. The new resulting output browse images are now 3 or 4 band PNG retaining the color information of the input image.[#39]
  • Changed pre-commit configuration to remove black-jupyter dependency [#38]
  • Updates service image's python to 3.12 [#38]
  • Simplifies test scripts to run with pytest and pytest plugins [#38]

Removed

  • Removes test_code_format.py in favor of ruff pre-commit configuration [#38]

v2.0.2 - 2024-10-15

Fixed

DAS-2259

  • Corrects bug with RGBA input tifs.

v2.0.1 - 2024-10-06

Changed

  • Updates service image to be built on AMD64.
  • Updates internal libraries

v2.0.0 - 2024-07-19

DAS-2180 - Adds pip installable library.

This release is a refactor that extracts browse image generation logic from the harmony service code. There are no user visible changes to the existing functionality. The new library, hybig-py, provides the create_browse function to generate browse images, see the README.md for details.

v1.2.2 - 2024-06-18

Changed

Removes internal dependency on conda.

v1.2.1 - 2024-06-10

Changed

Updated internal library dependencies.

v1.2.0 - 2024-05-28

Added

Adds functionality to retrieve 'visual' asset for multi-file granules. Harmony creates this type of asset when the UMM-G is correctly configured with a "BROWSE IMAGE SOURCE" subtype.

v1.1.0 - 2024-04-30

Changed

Changes the computation for an output image's default scale extent. Previously we considered ICD preferred ScaleExtents as covering the entire globe or pole. This change now takes just the input image bounds and converts them to the target crs and uses that transformed boundry as the default region to make a scale extent from.

Upgraded harmony-service-lib to v1.0.26

v1.0.2 - 2024-04-05

This version of HyBIG correctly handles missing/bad input data marked by _FillValue or NoData. Anytime a bad value occurs in the input raster, the output png image will set to transparent.

v1.0.1 - 2024-04-05

This version of HyBIG updates the repository to use black code formatting throughout. There should be no functional change to the service.

v1.0.0 - 2024-01-22

This version of the Harmony Browse Image Generator (HyBIG) contains all functionality previously released internally to EOSDIS as sds/harmony-browse-image-generator:0.0.11.

Additional contents to the repository include updated documentation and files outlined by the NASA open-source guidelines.

For more information on internal releases prior to NASA open-source approval, see legacy-CHANGELOG.md.