index.md

Overview of OpenVINO™ Toolkit Pre-Trained Models

OpenVINO™ toolkit provides a set of pre-trained models that you can use for learning and demo purposes or for developing deep learning software. Most recent version is available in the repo on Github.

The models can be downloaded via Model Downloader (<OPENVINO_INSTALL_DIR>/deployment_tools/open_model_zoo/tools/downloader). They can also be downloaded manually from 01.org.

Object Detection Models

Several detection models can be used to detect a set of the most popular objects - for example, faces, people, vehicles. Most of the networks are SSD-based and provide reasonable accuracy/performance trade-offs. Networks that detect the same types of objects (for example, face-detection-adas-0001 and face-detection-retail-0004) provide a choice for higher accuracy/wider applicability at the cost of slower performance, so you can expect a "bigger" network to detect objects of the same type better.

Model Name	Complexity (GFLOPs)	Size (Mp)	Face	Person	Vehicle	Bike	License plate
face-detection-adas-0001	2.835	1.053	X
face-detection-adas-binary-0001	0.819	1.053	X
face-detection-retail-0004	1.067	0.588	X
face-detection-retail-0005	0.982	1.021	X
person-detection-retail-0002	12.427	3.244		X
person-detection-retail-0013	2.300	0.723		X
person-detection-action-recognition-0005	7.140	1.951		X
person-detection-action-recognition-0006	8.225	2.001		X
person-detection-action-recognition-teacher-0002	7.140	1.951		X
person-detection-raisinghand-recognition-0001	7.138	1.951		X
pedestrian-detection-adas-0002	2.836	1.165		X
pedestrian-detection-adas-binary-0001	0.945	1.165		X
pedestrian-and-vehicle-detector-adas-0001	3.974	1.650		X	X
vehicle-detection-adas-0002	2.798	1.079			X
vehicle-detection-adas-binary-0001	0.942	1.079			X
person-vehicle-bike-detection-crossroad-0078	3.964	1.178		X	X	X
person-vehicle-bike-detection-crossroad-1016	3.560	2.887		X	X	X
vehicle-license-plate-detection-barrier-0106	0.349	0.634			X		X

Object Recognition Models

Object recognition models are used for classification, regression, and character recognition. Use these networks after a respective detector (for example, Age/Gender recognition after Face Detection).

Model Name	Complexity (GFLOPs)	Size (Mp)
age-gender-recognition-retail-0013	0.094	2.138
head-pose-estimation-adas-0001	0.105	1.911
license-plate-recognition-barrier-0001	0.328	1.218
vehicle-attributes-recognition-barrier-0039	0.126	0.626
emotions-recognition-retail-0003	0.126	2.483
landmarks-regression-retail-0009	0.021	0.191
facial-landmarks-35-adas-0002	0.042	4.595
person-attributes-recognition-crossroad-0230	0.174	0.735
gaze-estimation-adas-0002	0.139	1.882

Reidentification Models

Precise tracking of objects in a video is a common application of Computer Vision (for example, for people counting). It is often complicated by a set of events that can be described as a "relatively long absence of an object". For example, it can be caused by occlusion or out-of-frame movement. In such cases, it is better to recognize the object as "seen before" regardless of its current position in an image or the amount of time passed since last known position.

The following networks can be used in such scenarios. They take an image of a person and evaluate an embedding - a vector in high-dimensional space that represents an appearance of this person. This vector can be used for further evaluation: images that correspond to the same person will have embedding vectors that are "close" by L2 metric (Euclidean distance).

There are multiple models that provide various trade-offs between performance and accuracy (expect a bigger model to perform better).

Model Name	Complexity (GFLOPs)	Size (Mp)	Pairwise accuracy
person-reidentification-retail-0031	0.028	0.280	92.11%
person-reidentification-retail-0079	0.124	0.820	92.93%
person-reidentification-retail-0076	0.594	0.820	93.35%
face-reidentification-retail-0095	0.588	1.107	99.33%

Semantic Segmentation Models

Semantic segmentation is an extension of object detection problem. Instead of returning bounding boxes, semantic segmentation models return a "painted" version of the input image, where the "color" of each pixel represents a certain class. These networks are much bigger than respective object detection networks, but they provide a better (pixel-level) localization of objects and they can detect areas with complex shape (for example, free space on the road).

Model Name	Complexity (GFLOPs)	Size (Mp)
road-segmentation-adas-0001	4.770	0.184
semantic-segmentation-adas-0001	58.572	6.686

Instance Segmentation Models

Instance segmentation is an extension of object detection and semantic segmentation problems. Instead of predicting a bounding box around each object instance instance segmentation model outputs pixel-wise masks for all instances.

Model Name	Complexity (GFLOPs)	Size (Mp)
instance-segmentation-security-0050	46.602	30.448
instance-segmentation-security-0083	365.626	143.444
instance-segmentation-security-0010	899.568	174.568

Human Pose Estimation Models

Human pose estimation task is to predict a pose: body skeleton, which consists of keypoints and connections between them, for every person in an input image or video. Keypoints are body joints, i.e. ears, eyes, nose, shoulders, knees, etc. There are two major groups of such metods: top-down and bottom-up. The first detects persons in a given frame, crops or rescales detections, then runs pose estimation network for every detection. These methods are very accurate. The second finds all keypoints in a given frame, then groups them by person instances, thus faster than previous, because network runs once.

Model Name	Complexity (GFLOPs)	Size (Mp)
human-pose-estimation-0001	15.435	4.099

Image Processing

Deep Learning models find their application in various image processing tasks to increase the quality of the output.

Model Name	Complexity (GFLOPs)	Size (Mp)
single-image-super-resolution-1032	11.654	0.030
single-image-super-resolution-1033	16.062	0.030
text-image-super-resolution-0001	1.379	0.003

Text Detection

Deep Learning models for text detection in various applications.

Model Name	Complexity (GFLOPs)	Size (Mp)
text-detection-0003	51.256	6.747
text-detection-0004	23.305	4.328

Text Recognition

Deep Learning models for text recognition in various applications.

Model Name	Complexity (GFLOPs)	Size (Mp)
text-recognition-0012	1.485	5.568
handwritten-score-recognition-0003	0.792	5.555

Action Recognition Models

Action Recognition models predict action that is being performed on a short video clip (tensor formed by stacking sampled frames from input video). Some models (for example driver-action-recognition-adas-0002 may use precomputed high-level spatial or spatio-temporal) features (embeddings) from individual clip fragments and then aggregate them in a temporal model to predict a vector with classification scores. Models that compute embeddings are called encoder, while models that predict an actual labels are called decoder.

Model Name	Complexity (GFLOPs)	Size (Mp)
driver-action-recognition-adas-0002-encoder	0.676	2.863
driver-action-recognition-adas-0002-decoder	0.147	4.205
action-recognition-0001-encoder	7.340	21.276
action-recognition-0001-decoder	0.147	4.405

Image Retrieval

Deep Learning models for image retrieval (ranking 'gallery' images according to their similarity to some 'probe' image).

Model Name	Complexity (GFLOPs)	Size (Mp)
image-retrieval-0001	0.613	2.535

Compressed models

Deep Learning compressed models

Model Name	Complexity (GFLOPs)	Size (Mp)
resnet50-binary-0001	1.002	7.446
resnet-50-int8-tf-0001	6.996	25.530
resnet-50-int8-sparse-v1-tf-0001	6.996	25.530
resnet-50-int8-sparse-v2-tf-0001	6.996	25.530
inceptionv3-int8-tf-0001	11.469	23.819
inceptionv3-int8-sparse-v1-tf-0001	11.469	23.819
inceptionv3-int8-sparse-v2-tf-0001	11.469	23.819
mobilenetv2-int8-tf-0001	0.615	3.489
mobilenetv2-int8-sparse-v1-tf-0001	0.615	3.489
mobilenetv2-int8-sparse-v2-tf-0001	0.615	3.489

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