A9.com, Inc.

Chun Kai Wang

Arnab S Dhua

Himanshu Arora

Divyansh Agarwal

Cary Wang

Approaches described and suggested herein relate to generating three-dimensional representations of objects to be used to render virtual reality and augmented reality effects on personal devices such as smartphones and personal computers, for example. An initial surface mesh of an object is obtained. A plurality of silhouette masks of the object taken from a plurality of viewpoints is also obtained. A plurality of depth maps are generated from the initial surface mesh. Specifically, the plurality of depth maps are taken from the same plurality of viewpoints from which the silhouette images are taken. A volume including the object is discretized into a plurality of voxels. Each voxel is then determined to be either inside the object or outside of the object based on the silhouette masks and the depth data. A final mesh is then generated from the voxels that are determined to be inside the object.

Depth hull for rendering three-dimensional models

A handheld device of compact size combining a mini electric vacuum/blower, a pencil sharpener, a rubbery eraser, and a storage unit. The inventive device has one or more containers that house a motor and rotary fan for the vacuum/blower, a battery that powers the vacuum/blower, a pencil sharpener, a rubbery eraser, and a storage unit. The vacuum is used to clean the crumbs from the rubbery eraser or other small objects on a surface, and the vacuum easily converts to a blower that will generate air steam. The storage unit can house certain sized school supplies such as crayons, pens, pencils, or other small items. The inventive of the device is compact enough so that it can be operated single handedly and it can be carried in pockets or small bags.

Compact tool combining vacuum/blower, pencil sharpener, rubbery eraser, and storage space

Approaches described and suggested herein relate to generating an enhanced point cloud representation of an objection and generating a surface mesh from the enhanced point cloud. The surface mesh can be used to render three-dimensional representations of objects on personal devices such as smartphones and personal computers, for example. Generating an enhanced point cloud of an object includes capturing a plurality of images of the object from a plurality of viewpoints about the object, generating an initial point cloud representation of the object from the plurality of images, generating a preliminary surface mesh from the point cloud using a Delauney-based meshing algorithm, and sampling points from the preliminary surface mesh. The sampled points are then added to the point cloud to form the enhanced point cloud. A final surface mesh can then be generated from the enhanced point cloud using a Poisson-based meshing algorithm.

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Mountain View, CA, United States of America

Chun Kai Wang