Optimizing Automotive Augmented Reality Applications

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community.arm.com, Feb. 25, 2020 – 

AR (augmented reality) applications require better system performance than traditional applications. The human eye can easily perceive a choppy and slow representation of the physical world because we are used to it. However, even small errors in an AR application's rendering or frame rate can cause poor user experience.

Clear and consistent application performance is especially key in the automotive space. Vehicles are increasingly incorporating augmented reality into the core user experience for example by rendering navigation information directly in the driver's field of vision. In this scenario, a distracting lag or an unclear visualization, could result in a catastrophic accident.

This blog detailed our AR application use case and development methodology, specifically focusing on how to optimize the performance to give the best user experience.

The current state of affairs

Software, no matter how well written, is ultimately dependent on the hardware it is run on. Currently AR applications do not have a dedicated ECU (electronic control units) for augmented reality, so they usually run within existing ECUs in the vehicle. This limits performance, so the AR applications must be isolated from other applications running on the same hardware. The video content of the AR application should be displayed with stable frame rate to avoid user motion sickness and display clarity.

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