Intra-oral scanning device with illumination frames interspersed with image frames

Apparatus, comprising:

• one or more light sources;
• a processor;
• computer memory holding computer program instructions executed by the processor to:
• control the one or more light sources to project first pattern data, and second data, the first pattern data projected within a first series of frames, the second data projected within a second series of frames, the second series of frames interleaved between frames in the first series of frames as a single composite set of frames;
• to receive first reflection data reflected from an object from the first pattern data;
• to receive second reflection data reflected from the object from the second data;
• to process the first reflection data to generate first information representing a 3D model of the object;
• to process the second reflection data to generate second information representing a live video preview of the object;
• and
• to enable rendering, as a single composite set of display frames, of the 3D model of the object juxtaposed against the live video preview.

An article associated a light source and comprising a non-transitory machine readable medium that stores a program, the program being executed by a machine:

• to control the one or more light sources to project first pattern data, and second data, the first pattern data projected within a first series of frames, the second data projected within a second series of frames, the second series of frames interleaved between frames in the first series of frames as a single composite set of frames;
• to receive first reflection data reflected from an object from the first pattern data;
• to receive second reflection data reflected from the object from the second data;
• to process the first reflection data to generate first information representing a 3D model of the object;
• to process the second reflection data to generate second information representing a live video preview of the object;
• and
• to render, as a single composite set of display frames, the 3D model of the object juxtaposed against the live video preview.