Google's New Neural Network for Fast Rendering on Mobile Phones

This new NeRF is based on textured polygons and can efficiently synthesize images with standard rendering pipelines on a wide range of devices.

A team of scientists from Google Research has presented MobileNeRF, a new neural network based on textured polygons that can efficiently synthesize images with standard rendering pipelines. According to the team, their NeRF is represented as a set of polygons with textures representing binary opacities and feature vectors.

This approach enables the network to be rendered with the traditional polygon rasterization pipeline, providing massive pixel-level parallelism and achieving interactive frame rates on a wide range of computing platforms, including mobile phones.

"We represent the scene as a triangle mesh textured by deep features," commented the team on the network's rendering pipeline. "We first rasterize the mesh to a deferred rendering buffer. For each visible fragment, we execute a neural deferred shader that converts the feature and view direction to the corresponding output pixel color."

To train the network, the team initializes the mesh as a regular grid and uses MLPs to represent the features and opacity for any point on the mesh. In a later training stage, binary alpha values are enforced with super-sampling on features for anti-aliasing. Then, they extract the triangle mesh and bake the features and opacity into texture images.

You can learn more and try out the MobileNeRF here.

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Google's New Neural Network for Fast Rendering on Mobile Phones

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