pyusbus Readme

Objective

The objective for this lib is be able to get images from USB probes easily, under python, in a user-friendly API, getting images in 3 lines of code.

import pyusbus as usbProbe
probe = usbProbe.UP20() 
frames = probe.getImages(n=10) # should give you a loop of 10 frames

It covers today four probes, including a mechanical one (interson), one convex, one linear bw, one linear doppler.

Not all features are identified / found back, as a work in progress, feel free to contribute or drop me a line if you want to explore a model.

Result

First series on a vein phantom, second on my forearm. Still some work around image compression / dynamic range adjustments.

Covered probes

So far, we do cover four probes.

probe = usbProbe.Interson() 
probe = usbProbe.CONV() 
probe = usbProbe.UP20() 
probe = usbProbe.DOPPLER() 

Interson probe

BMV Convex

Linear HP20L

BMV Doppler linear

Installation

You can use the build.sh and install.sh scripts to prepare your module. Hopefully soon to come under pip.

General setup

Need to work on the documentation here.

Ubuntu adjustements

sudo usermod -a -G   $USER
sudo usermod -a -G dialout $USER
sudo echo "SUBSYSTEM==\"usb\", ATTR{idVendor}==\"04B4\", ATTR{idProduct}==\"8613\", MODE=\"666\"">/etc/udev/rules.d/99-healson.rules 
sudo echo "SUBSYSTEM==\"usb\", ATTR{idVendor}==\"04B4\", ATTR{idProduct}==\"0x00f1\", MODE=\"666\"">/etc/udev/rules.d/99-bmv.rules 
sudo echo "SUBSYSTEM==\"usb\", ATTR{idVendor}==\"1921\", ATTR{idProduct}==\"0001\", MODE=\"666\"">/etc/udev/rules.d/99-interson.rules 
sudo echo "SUBSYSTEM==\"usb\", ATTR{idVendor}==\"1921\", ATTR{idProduct}==\"f001\", MODE=\"666\"">/etc/udev/rules.d/99-interson-ok.rules 
sudo echo "SUBSYSTEM==\"usb\", ATTR{idVendor}==\"04B4\", ATTR{idProduct}==\"1003\", MODE=\"666\"">/etc/udev/rules.d/99-doppler.rules 
sudo udevadm control --reload-rules

For further debug, and to support wireshark checks on usbmon:

sudo modprobe usbmon
sudo setfacl -m u:$USER:r /dev/usbmon*

Note:

Contents

• the experiments folder contains .. experiments.

  • Initial Jupyter notebook
  • Init Convex

• the pyusbus folder contains the python API.

Changelog

• v0.1.1:

  • Bug on doppler acquisitions, empty frames broke acquisitons
  • Adding tkinter tests for doppler

• v0.1.0:

  • Adding the Doppler BMV probe. B-Mode and Doppler modes seem to work.
  • Issues with /etc/udev/rules.d for this probe.. Actually was simple, another rule overrided this device descriptor.
  • Adding steering doppler data packets.

• v0.0.3:

  • Adding the interson probe. Loads of work remaining: so far getting images, but would be good to have some control over the actual width of the images (variable as of the motor speed). Some pointers on interson's with Kitware, but unsure if that applies to this probe.
  • Interson: need to be able to read values with control read.

• v0.0.2:

  • Solved an issue with incomplete images with UP20
  • Adding a streamlit interface - to be improved.
  • (hopefully) solved a bug with base64.decode leading to incorrect padding.

• v0.0.1: Inital release

  • Initial config. Works for UP20 probe, yielding enveloppe.
  • Also added a Convex probe, which yields RF signals.
  • Adding Convex pictures of a phantom
  • saveImage added to UP20 with correct distance (mm) markers

Todo

• High priority
  • Explore content of arrays for both UP20 and Convex. Support from users welcome ;)
  • Add correct ratios for images
• Medium
  • Improve documentation
  • Better get the APIs different options
  • Get to know the Convex configuration packets
  • Explore acquisitions timings (packets/lines/frames per sec)
• Low
  • Add the module under pip

License

    pyusbus is a python API to access usb ultrasound probes
    Copyright (C) 2021 Luc Jonveaux

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.