library_name: pytorch
license: apache-2.0
pipeline_tag: keypoint-detection
tags:
- android
Posenet-Mobilenet: Optimized for Mobile Deployment
Perform accurate human pose estimation
Posenet performs pose estimation on human images.
This model is an implementation of Posenet-Mobilenet found here.
This repository provides scripts to run Posenet-Mobilenet on Qualcomm® devices. More details on model performance across various devices, can be found here.
Model Details
- Model Type: Pose estimation
- Model Stats:
- Model checkpoint: mobilenet_v1_101
- Input resolution: 513x257
- Number of parameters: 3.31M
- Model size: 12.7 MB
| Model | Device | Chipset | Target Runtime | Inference Time (ms) | Peak Memory Range (MB) | Precision | Primary Compute Unit | Target Model |
|---|---|---|---|---|---|---|---|---|
| Posenet-Mobilenet | Samsung Galaxy S23 | Snapdragon® 8 Gen 2 | TFLITE | 1.391 ms | 0 - 177 MB | FP16 | NPU | Posenet-Mobilenet.tflite |
| Posenet-Mobilenet | Samsung Galaxy S23 | Snapdragon® 8 Gen 2 | QNN | 1.468 ms | 0 - 65 MB | FP16 | NPU | Posenet-Mobilenet.so |
| Posenet-Mobilenet | Samsung Galaxy S23 | Snapdragon® 8 Gen 2 | ONNX | 1.901 ms | 0 - 126 MB | FP16 | NPU | Posenet-Mobilenet.onnx |
| Posenet-Mobilenet | Samsung Galaxy S24 | Snapdragon® 8 Gen 3 | TFLITE | 0.961 ms | 0 - 21 MB | FP16 | NPU | Posenet-Mobilenet.tflite |
| Posenet-Mobilenet | Samsung Galaxy S24 | Snapdragon® 8 Gen 3 | QNN | 1.019 ms | 2 - 21 MB | FP16 | NPU | Posenet-Mobilenet.so |
| Posenet-Mobilenet | Samsung Galaxy S24 | Snapdragon® 8 Gen 3 | ONNX | 1.332 ms | 0 - 48 MB | FP16 | NPU | Posenet-Mobilenet.onnx |
| Posenet-Mobilenet | Snapdragon 8 Elite QRD | Snapdragon® 8 Elite | TFLITE | 1.008 ms | 0 - 13 MB | FP16 | NPU | Posenet-Mobilenet.tflite |
| Posenet-Mobilenet | Snapdragon 8 Elite QRD | Snapdragon® 8 Elite | QNN | 1.012 ms | 0 - 16 MB | FP16 | NPU | Use Export Script |
| Posenet-Mobilenet | Snapdragon 8 Elite QRD | Snapdragon® 8 Elite | ONNX | 1.067 ms | 0 - 24 MB | FP16 | NPU | Posenet-Mobilenet.onnx |
| Posenet-Mobilenet | QCS8550 (Proxy) | QCS8550 Proxy | TFLITE | 1.382 ms | 0 - 22 MB | FP16 | NPU | Posenet-Mobilenet.tflite |
| Posenet-Mobilenet | QCS8550 (Proxy) | QCS8550 Proxy | QNN | 1.399 ms | 2 - 3 MB | FP16 | NPU | Use Export Script |
| Posenet-Mobilenet | SA7255P ADP | SA7255P | TFLITE | 53.844 ms | 0 - 15 MB | FP16 | NPU | Posenet-Mobilenet.tflite |
| Posenet-Mobilenet | SA7255P ADP | SA7255P | QNN | 54.075 ms | 2 - 11 MB | FP16 | NPU | Use Export Script |
| Posenet-Mobilenet | SA8255 (Proxy) | SA8255P Proxy | TFLITE | 1.384 ms | 0 - 22 MB | FP16 | NPU | Posenet-Mobilenet.tflite |
| Posenet-Mobilenet | SA8255 (Proxy) | SA8255P Proxy | QNN | 1.411 ms | 0 - 1 MB | FP16 | NPU | Use Export Script |
| Posenet-Mobilenet | SA8295P ADP | SA8295P | TFLITE | 2.796 ms | 0 - 13 MB | FP16 | NPU | Posenet-Mobilenet.tflite |
| Posenet-Mobilenet | SA8295P ADP | SA8295P | QNN | 2.935 ms | 0 - 6 MB | FP16 | NPU | Use Export Script |
| Posenet-Mobilenet | SA8650 (Proxy) | SA8650P Proxy | TFLITE | 1.383 ms | 0 - 198 MB | FP16 | NPU | Posenet-Mobilenet.tflite |
| Posenet-Mobilenet | SA8650 (Proxy) | SA8650P Proxy | QNN | 1.406 ms | 0 - 1 MB | FP16 | NPU | Use Export Script |
| Posenet-Mobilenet | SA8775P ADP | SA8775P | TFLITE | 2.843 ms | 0 - 18 MB | FP16 | NPU | Posenet-Mobilenet.tflite |
| Posenet-Mobilenet | SA8775P ADP | SA8775P | QNN | 3.049 ms | 2 - 7 MB | FP16 | NPU | Use Export Script |
| Posenet-Mobilenet | QCS8450 (Proxy) | QCS8450 Proxy | TFLITE | 2.199 ms | 0 - 22 MB | FP16 | NPU | Posenet-Mobilenet.tflite |
| Posenet-Mobilenet | QCS8450 (Proxy) | QCS8450 Proxy | QNN | 2.282 ms | 2 - 25 MB | FP16 | NPU | Use Export Script |
| Posenet-Mobilenet | Snapdragon X Elite CRD | Snapdragon® X Elite | QNN | 1.583 ms | 2 - 2 MB | FP16 | NPU | Use Export Script |
| Posenet-Mobilenet | Snapdragon X Elite CRD | Snapdragon® X Elite | ONNX | 2.236 ms | 7 - 7 MB | FP16 | NPU | Posenet-Mobilenet.onnx |
Installation
This model can be installed as a Python package via pip.
pip install qai-hub-models
Configure Qualcomm® AI Hub to run this model on a cloud-hosted device
Sign-in to Qualcomm® AI Hub with your
Qualcomm® ID. Once signed in navigate to Account -> Settings -> API Token.
With this API token, you can configure your client to run models on the cloud hosted devices.
qai-hub configure --api_token API_TOKEN
Navigate to docs for more information.
Demo off target
The package contains a simple end-to-end demo that downloads pre-trained weights and runs this model on a sample input.
python -m qai_hub_models.models.posenet_mobilenet.demo
The above demo runs a reference implementation of pre-processing, model inference, and post processing.
NOTE: If you want running in a Jupyter Notebook or Google Colab like environment, please add the following to your cell (instead of the above).
%run -m qai_hub_models.models.posenet_mobilenet.demo
Run model on a cloud-hosted device
In addition to the demo, you can also run the model on a cloud-hosted Qualcomm® device. This script does the following:
- Performance check on-device on a cloud-hosted device
- Downloads compiled assets that can be deployed on-device for Android.
- Accuracy check between PyTorch and on-device outputs.
python -m qai_hub_models.models.posenet_mobilenet.export
Profiling Results
------------------------------------------------------------
Posenet-Mobilenet
Device : Samsung Galaxy S23 (13)
Runtime : TFLITE
Estimated inference time (ms) : 1.4
Estimated peak memory usage (MB): [0, 177]
Total # Ops : 41
Compute Unit(s) : NPU (41 ops)
How does this work?
This export script leverages Qualcomm® AI Hub to optimize, validate, and deploy this model on-device. Lets go through each step below in detail:
Step 1: Compile model for on-device deployment
To compile a PyTorch model for on-device deployment, we first trace the model
in memory using the jit.trace and then call the submit_compile_job API.
import torch
import qai_hub as hub
from qai_hub_models.models.posenet_mobilenet import Model
# Load the model
torch_model = Model.from_pretrained()
# Device
device = hub.Device("Samsung Galaxy S23")
# Trace model
input_shape = torch_model.get_input_spec()
sample_inputs = torch_model.sample_inputs()
pt_model = torch.jit.trace(torch_model, [torch.tensor(data[0]) for _, data in sample_inputs.items()])
# Compile model on a specific device
compile_job = hub.submit_compile_job(
model=pt_model,
device=device,
input_specs=torch_model.get_input_spec(),
)
# Get target model to run on-device
target_model = compile_job.get_target_model()
Step 2: Performance profiling on cloud-hosted device
After compiling models from step 1. Models can be profiled model on-device using the
target_model. Note that this scripts runs the model on a device automatically
provisioned in the cloud. Once the job is submitted, you can navigate to a
provided job URL to view a variety of on-device performance metrics.
profile_job = hub.submit_profile_job(
model=target_model,
device=device,
)
Step 3: Verify on-device accuracy
To verify the accuracy of the model on-device, you can run on-device inference on sample input data on the same cloud hosted device.
input_data = torch_model.sample_inputs()
inference_job = hub.submit_inference_job(
model=target_model,
device=device,
inputs=input_data,
)
on_device_output = inference_job.download_output_data()
With the output of the model, you can compute like PSNR, relative errors or spot check the output with expected output.
Note: This on-device profiling and inference requires access to Qualcomm® AI Hub. Sign up for access.
Run demo on a cloud-hosted device
You can also run the demo on-device.
python -m qai_hub_models.models.posenet_mobilenet.demo --on-device
NOTE: If you want running in a Jupyter Notebook or Google Colab like environment, please add the following to your cell (instead of the above).
%run -m qai_hub_models.models.posenet_mobilenet.demo -- --on-device
Deploying compiled model to Android
The models can be deployed using multiple runtimes:
TensorFlow Lite (
.tfliteexport): This tutorial provides a guide to deploy the .tflite model in an Android application.QNN (
.soexport ): This sample app provides instructions on how to use the.soshared library in an Android application.
View on Qualcomm® AI Hub
Get more details on Posenet-Mobilenet's performance across various devices here. Explore all available models on Qualcomm® AI Hub
License
- The license for the original implementation of Posenet-Mobilenet can be found here.
- The license for the compiled assets for on-device deployment can be found here
References
- PersonLab: Person Pose Estimation and Instance Segmentation with a Bottom-Up, Part-Based, Geometric Embedding Model
- Source Model Implementation
Community
- Join our AI Hub Slack community to collaborate, post questions and learn more about on-device AI.
- For questions or feedback please reach out to us.