SCAR project started as a pilot project in University of Washington's School of Nursing, to test the integration of nursing education/training with mobile AR technology. After five months of R&D and hands on participation design with instructors, this is the final high fidelity prototype.
After a couple of mobile AR demo sessions, we decided on the subject of wound management. I've given a scenario with an actual patient case to start researching the content material and get myself familiar with the core concept of wound management. Based on some secondary research and hours of primary shadowing and participation design, the general structure of SCAR app starts to take shape.
The mission statement for the design was to "Create an augmented reality platform for students to practice identification venous ulcers and visualize their pathophysiology."
The actual building of the prototype was the real challenge in this project. A big bulk of the work was to make an accurate model of the degenerated foot using real images from various sources. The 3D model should be extremely detailed to be able to show accurate detail in a zoomed-in view while being low poly enough to not tax the device (Cell phone) too much. I used a combination of 3D Studio Max and Mudbox to create the base poly model and sculpt/paint it to extract shader materials for later.
After modeling and texturing I create a rig system to be able to animate the parts for future use. Animations for the foot model consisted of four loop movements in four directions. This would help with usability where the user would be able to move the foot in any direction for a better view of the wound.
The UI for the app, however being in prototype level, follows the principles of iconography, color, typography and information hierarchy. I used Photoshop (mostly) to create the UI graphics and Unity UI engine for wireframing and intractability.
The final version of the SCAR prototype (Version 4) is available for Android 8.0 (and above) phones. This version includes one case scenario of a lower extremity wound with assessment and venous perfusion viewing modes. Plus a doppler sonar device to listen to the blood flow and determining the blood pressure for a more accurate diagnosis. Additionally, this version does have a test your knowledge part so students can guess correct answers based on the material provided in other sections of the app.