{"id":2063,"date":"2025-09-16T16:20:06","date_gmt":"2025-09-16T13:20:06","guid":{"rendered":"https:\/\/sites.uef.fi\/openar\/?page_id=2063"},"modified":"2025-09-16T16:20:07","modified_gmt":"2025-09-16T13:20:07","slug":"openar21","status":"publish","type":"page","link":"https:\/\/sites.uef.fi\/openar\/openar21\/","title":{"rendered":"OpenAR 2.1"},"content":{"rendered":"\n
\"\"
OpenAR 2.1 \u201cthermal glasses\u201d built on the previously announced OpenAR 2.0 platform<\/em>.<\/figcaption><\/figure>\n\n\n\n

Built upon the OpenAR 2.0<\/a> platform, OpenAR 2.1 aka \u201cthermal glasses\u201d enhance the user\u2019s vision by detecting infrared radiation. Live video feed of heat sources in front of the thermal camera is reflected onto the user\u2019s eyes, effectively broadening the electromagnetic spectrum visible to humans.<\/p>\n\n\n\n

\"\"
OpenAR 2.1 closely resembles its predecessor<\/em>.<\/figcaption><\/figure>\n\n\n\n

New and upgraded 3D models, a more powerful CPU, a thermal camera, and a fresh new paint job. OpenAR 2.1 is a prime example of how small changes to electronics, and the 3D models can change the functionality of the OpenAR platform. Previously, we only had a demo-program that showcased the augmented reality effect. Now we have actual functionality! You can use the 2.1-glasses to find heat sources around you as a fun experiment.<\/p>\n\n\n\n

\"\"
Thermal camera image of a hand captured with a phone camera. The user experience is much more immersive!<\/em><\/figcaption><\/figure>\n\n\n\n

OpenAR 2.1 has the same optics and overall design as the 2.0 version. Changes were made mainly to the electronics to run the thermal camera live feed. New 3D models were also made and printed to fit these new electronics onto the optical and headband setup. The cool thing (no pun intended) about the thermal camera C++ program (written with VS code) we provide, is that you can easily change the minimum and maximum temperature that is drawn onto to the LCD display. In the thermal image above, you can see how the sunlight coming through the windows warms the air in the room. Changing the minimum value by a few degrees would clean up the image.<\/p>\n\n\n\n

\"\"
The same optical setup as in OpenAR 2.0 with the added thermal camera.<\/em><\/figcaption><\/figure>\n\n\n\n

How it works<\/h2>\n\n\n\n

The optics are the same as in OpenAR 2.0. We simply added the thermal camera on top of the optical setup and programmed an ESP32 FeatherS3 development board to show the live feed on the LCD display.<\/p>\n\n\n\n

\"\"
A top-down look at the optical path light takes from the display to the user\u2019s eyes<\/em>.<\/figcaption><\/figure>\n\n\n\n