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DeNoise AI v3.7 - Improved color consistency with Low Light v4, new TensorRT models, and LOTS of important stability improvements

Brian Matiash
June 23, 2022
Time to read:
9 Minutes

DeNoise AI v3.7 at a glance

  • Improved color consistency with Low Light v4 - Improvements to how we trained Low Light v4 allows us to provide more consistent color while reducing blotchiness in the highlights and shadows.
  • Updated TensorRT models - Users of supported NVIDIA GPUs will experience performance improvements, especially when using the RAW model.
  • Important stability improvements and bug fixes - Additional camera model RAW files are now supported, including the highly requested Olympus OM1. Bug fix highlights include plugging up a memory leak when batch processing using the RAW model, improved handling of batch import into Adobe Lightroom Classic, and a new workflow that prevents crashes when applying the RAW model to Canon CR2 files.

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Release Notes

Improved color consistency with Low Light v4

When using the Low Light v3 model in DeNoise v3.6, you may have experienced blotchiness, or patterns, especially in the highlight and shadow regions of very noisy photos. This was due to the Low Light model preserving some of the color in the noise pattern of the original at a very local level, in an effort to provide more consistent color.

To alleviate that issue, we adjusted our approach and reduced that color consistency constraint (say that three times fast 😁) to work on larger regions of the image as opposed to at a very local level. This new approach allows the model to focus on improving noise reduction without worrying about color consistency... yet. That’s because we added a smaller model with the sole purpose of matching the input and output color, thereby establishing improved color consistency of the image after the model processes it.

With these updates, color blotchiness and patterns are significantly reduced, especially in the highlight and shadow regions. The improvements will also be most visible with images suffering from stronger color noise. Here are some examples that illustrate the improvements between Low Light v3 (in DeNoise AI v3.6.2) and Low Light v4 (in DeNoise AI v3.7).

Do you see the blotchiness in the clothing of both pedestrians in the foreground of the left image? | © Hillary Fox
Low Light v4 is able to remove that while preserving the textures and patterns of the clothing. | © Hillary Fox
Blotchiness is prevalent throughout all four bell peppers when using Low Light v3.
However, that is completely mitigated when using Low Light v4.

Updated TensorRT models

With the implementation of TensorRT models, users who have computers containing NVIDIA GPUs that are 30, 20, or 10 Series will experience model performance improvements. We optimized the library used for NVIDIA GPUs from DirectML to TensorRT and have included these models with the DeNoise AI installer. While users should experience performance boosts with all models, the RAW model will yield especially huge gains when using a supported NVIDIA GPU. Here are two benchmark tests comparing the NVIDIA RTX 3080 and RTX 3060 performance of the DeNoise AI RAW model using DirectML and TensorRT. As you can see, the performance gains are notable.

Important stability improvements and bug fixes

We’re constantly working to improve our support of new camera model RAW files. With DeNoise AI v3.7, we’ve added support for the Olympus OM1, as well as a number of other camera models. We’ve also improved the JPEG Quality and PNG Compression sliders, giving users more granularity for those settings when saving  those respective files. Now, the slider for both formats goes from 1 - 100 instead of 1 - 10.

While DeNoise AI v3.7 has a large number of bug fixes, here are some notable ones:

  • We fixed an issue that prevented Adobe Lightroom Classic from not being able to import all images from large batch processes.
  • We’ve improved the reliability of applying the RAW model to Canon CR2 files. Previously, this could have resulted in the app crashing.
  • Previously when batch processing a large amount of RAW files, a memory leak could cause the program to crash. This should now be resolved.
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Brian Matiash

Brian Matiash is a South Florida photo educator who serves enthusiast photographers looking to grow their landscape, travel, and wildlife skills. Learn more on his website and YouTube.