Wearable multimedia device and cloud computing platform with laser projection system

A body-worn apparatus comprising:

• a camera;
• a depth sensor;
• a laser projection system;
• one or more processors;
• memory storing instructions that when executed by the one or more processors, cause the one or more processors to perform operations comprising:
• capturing, using the camera, a first set of digital images;
• identifying a real-world object in the first set of digital images;
• capturing, using the depth sensor, first depth data;
• identifying, in the first set of digital images and the first depth data, a first gesture of a user wearing the apparatus,
• wherein identifying the real-world object and the first gesture includes:
• processing the first set of digital images through an object detection framework that uses a complex polygon to identify a hotspot region in the first set of images, wherein the hotspot region is smaller than the entire image and captures the first gesture and the real-world object while excluding all other objects in the first set of images;
• sending, to a cloud computing platform, the hotspot region;
• receiving, from the cloud computing platform, information related to the real-world object;
• and
• projecting, with the laser projection system, at least some of the information on a surface.