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MultilevelCropAndResize

Table Of Contents

Description

The MultilevelCropAndResize plugin performs the ROIAlign operation on the output feature maps from FPN (Feature Pyramid Network). It is used for MaskRCNN inference in Transfer Learning Toolkit.

Structure

This plugin supports the NCHW format. It takes multiple inputs: roi, feature_maps from FPN.

roi is the ROI candidates from the MultilevelProposeROI plugin. Its shape is [N, rois, 4] where N is the batch_size, rois is the number of ROI candidates and 4 is the number of coordinates.

feature_maps are the output of FPN. In TLT MaskRCNN, the model we provide contains 5 feature maps from FPN's different stages.

This plugin generate one output tensor of shape [N, rois, C, pooled_size, pooled_size] where C is the channel of mutiple feature maps from FPN and pooled_size is the height(and width) of the feature area after ROIAlign.

Parameters

This plugin has the plugin creator class MultilevelCropAndResizePluginCreator and the plugin class MultilevelCropAndResize.

The following parameters were used to create MultilevelCropAndResize instance:

Type Parameter Description
int pooled_size The spatial size of a feature area after ROIAlgin will be [pooled_size, pooled_size]

Additional resources

License

For terms and conditions for use, reproduction, and distribution, see the TensorRT Software License Agreement documentation.

Changelog

June 2020 This is the first release of this README.md file.

Known issues

There are no known issues in this plugin.