Seal evaluation systems and methods for respiratory protection devices
A fit detection system for a respiratory protection device is presented that includes an infrared camera that captures an image sequence of a user wearing the respiratory protection device. The system also includes a temperature change detector that analyzes images in the image sequence and detects a temperature change profile of the respiratory protection device. The system also includes a communication component that communicates a fit indication based on the detected temperature change profile.
1 . A fit detection system for a respiratory protection device, the system comprising:
an infrared camera that captures an image sequence of a user wearing the respiratory protection device;
a temperature change detector that analyzes images in the image sequence and detects a temperature change profile of the respiratory protection device; and
a communication component that communicates a fit indication based on the detected temperature change profile.
2 . The system of claim 1 , and further comprising:
a segmenter that analyzes the image sequence and generates segments for each image in the image sequence.
3 . The system of claim 2 , wherein, based on the segmented images, a 3D mesh generator generates a 3D mesh of the respiratory protection device.
4 . The system of claim 3 , wherein, based on the 3D mesh generator, a seal between the respiratory protection device and a face of the user is evaluated.
5 . The system of claim 1 , and further comprising an image identifier that identifies an inhale image, indicative of an inhale, and an exhale image, indicative of an exhale.
6 . The system of claim 1 , wherein the IR camera automatically captures the image sequence upon detecting the user in a field of view of the camera.
7 . The system of claim 1 , wherein the feature extractor detects a movement of the respiratory protection device in the image sequence.
8 . The system of claim 1 , wherein the communication component communicates the fit indication to a graphical user interface generator, and wherein the graphical user interface generator generates a graphical user interface that displays a fit indication.
9 . A method for checking a fit of a respiratory protection device, the method comprising:
capturing a sequence of infrared images of a wearer of the respiratory protection device;
isolating the respiratory protection device portion of the captured images;
detecting a temperature change profile of the respiratory protection device over time, from the captured images; and
based on the temperature change profile, determining a seal quality of the respiratory protection device.
10 . The method of claim 9 , and further comprising:
communicating the seal quality, using a communication component.
11 . The method of claim 9 , wherein isolating the respiratory protection device comprises:
segmenting a portion of the captured images containing the respiratory protection device; and
identifying a leak in a seal of the respiratory protection device based on the segmentation.
12 . The method of claim 11 , and further comprising:
generating a 3D mesh of the respiratory protection device; and
identifying a leak in a seal of the respiratory protection device based on the 3D mesh.
13 . The method of claim 11 , and further comprising overlaying a generated 3D mesh of the respiratory device with the segmented images of the respiratory protection device.
14 . The method of claim 9 , wherein detecting a temperature change profile further comprises:
identifying an inhale image in the sequence of infrared images;
identifying an exhale image in the sequence of infrared images; and
comparing a temperature difference in a pixel between the inhale image and the exhale image.
15 . The method of claim 9 , wherein the seal quality comprises a leak location and wherein the leak location is communicated to a graphical user interface generator which provides an indication of the leak location on a graphical user interface.
16 . The method of claim 9 , and further comprising the wearer activating an application on a computing device and, based on the activation, automatically completing the steps of capturing, isolating, detecting and determining.
17 . The method of claim 9 , wherein communicating comprises providing an alert that the seal quality is below a threshold.
18 . The method of claim 9 , wherein determining the seal quality comprises:
receiving an ambient temperature indication and;
wherein determining the seal quality comprises analyzing a database of temperature change profile data matching the ambient temperature indication.
19 . The method of claim 9 , wherein determining the seal quality comprises:
identifying a manufacturer and model of the RPD and;
wherein determining the seal quality comprises analyzing a database of temperature change profile data matching the identified RPD manufacturer and model.
20 . A touch free safety monitoring system comprising:
an IR camera with a field of view configured to, when an individual is detected within the field of view, capture a sequence of IR images of a face of the individual;
a temperature profile generator that, based on the images, generates a temperature profile of a respiratory protection device on the face of the individual;
a seal evaluator that, based on the temperature profile, evaluates a quality of a seal between the respiratory protection device and the face of the individual; and
a communication module that communicates the seal quality.