drn-d-38¶

Use Case and High-Level Description¶

The drn-d-38 model is a one of the Dilated Residual Networks (DRN) models for semantic segmentation task. DRN models dilate ResNet models, DRN-C version additionally removes residual connections from some of the added blocks and DRN-D version is a simplified version of DRN-C.

This model pre-trained on Cityscapes dataset for 19 object classes, listed in <omz_dir>/data/dataset_classes/cityscapes_19cl.txt file. See Cityscapes classes definition for more details.

More details provided in the paper and repository.

Specification¶

Metric	Value
Type	Semantic segmentation
GFLOPs	1768.3276
MParams	25.9939
Source framework	PyTorch*

Accuracy¶

Metric	Value
mean_iou	71.31%

Input¶

Original model¶

Image, name: input, shape: 1, 3, 1024, 2048, format: B, C, H, W, where:

B - batch size
C - number of channels
H - image height
W - image width

Expected color order: RGB. Mean values: [73.975742869, 83.660769353, 73.175805779], scale values: [46.653282963, 47.574230671, 47.041147921]

Converted Model¶

Image, name: input, shape: 1, 3, 1024, 2048, format: B, C, H, W, where:

B - batch size
C - number of channels
H - image height
W - image width

Expected color order: BGR.

Output¶

Original Model¶

Float values, which represent scores of a predicted class for each image pixel. The model was trained on Cityscapes dataset with 19 categories of objects. Name: output, shape: 1, 19, 1024, 2048 in B, N, H, W format, where:

B - batch size
N - number of classes
H - image height
W - image width

Converted Model¶

B - batch size
N - number of classes
H - image height
W - image width

Download a Model and Convert it into OpenVINO™ IR Format¶

You can download models and if necessary convert them into OpenVINO™ IR format using the Model Downloader and other automation tools as shown in the examples below.

An example of using the Model Downloader:

omz_downloader --name <model_name>

An example of using the Model Converter:

omz_converter --name <model_name>

Demo usage¶

The model can be used in the following demos provided by the Open Model Zoo to show its capabilities:

Legal Information¶

The original model is distributed under the following license:

BSD 3-Clause License

Copyright (c) 2017, Fisher Yu
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice, this
  list of conditions and the following disclaimer.

* Redistributions in binary form must reproduce the above copyright notice,
  this list of conditions and the following disclaimer in the documentation
  and/or other materials provided with the distribution.

* Neither the name of the copyright holder nor the names of its
  contributors may be used to endorse or promote products derived from
  this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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