What's new in Inference Engine 2.2

Inference Engine is the new name for the Sentis package.

This is a summary of the changes from Sentis 2.1 to Inference Engine 2.2.

For information on how to upgrade, refer to the Upgrade Guide.

Added

  • Dynamic input shape dimensions support at import time for better model optimization.
  • Custom input and output names for models created with the functional API.
  • The model stores the shapes and data types of intermediate and output tensors and displays them in the Model Asset Inspector.
  • New Mish operator.
  • Improved shape inference for model optimization.

Updated

  • ScatterElements and ScatterND operators now support min and max reduction modes.
  • DepthToSpace and SpaceToDepth now support integer tensors.
  • TopK supports integer tensors.
  • Functional.OneHot now allows negative indices.
  • RoiAlign now supports the coordinate_transformation_mode parameter.
  • Reduction operators return correct results when reducing a tensor along an axis of length 0.
  • Reshape operator can now infer unknown dimensions even when reshaping a length 0 tensor like in PyTorch.
  • Improved documentation for Model Asset Inspector.

Removed

  • Obsolete Unity Editor menu items.
  • Slow CPU support for 4-dimensional and higher Convolution layers.

Fixed

  • Out-of-bounds errors for certain operators on GPUCompute backend.
  • The TextureConverter methods now correctly performs sRGB to RGB conversions.
  • Incorrect graph optimizations for certain models.
  • Issues with negative padding values in pooling and convolutions.
  • Accurate handling of large and small integer values in the GPUPixel backend.
  • Proper destruction of allocated render textures in the GPUPixel backend.
  • LeakyRelu now supports alpha greater than 1 on all platforms.
  • Fixed Async behaviour for CPU tensor data.