Three-dimensional object localization using a lookup table

An electronic system for analyzing a field of view, comprising:

• one or more processors;
• and
• memory storing one or more programs for execution by the one or more processors, the one or more programs comprising instructions for:
• identifying a plurality of device characteristics of an imaging device that includes one or more signal emitters and one or more signal detectors;
• illuminating the field of view by signals from the one or more signal emitters according to a modulation signal generated by the imaging device;
• at each of the signal detectors, obtaining a response signal from the field of view;
• sampling the response signals to form a response vector;
• obtaining a lookup table corresponding to the modulation signal and the device characteristics, wherein the field of view is partitioned into a 3-dimensional plurality of voxels, and the lookup table includes information that specifies, for each voxel, expected signals received by the signal detectors when the voxel is filled and the signal emitters illuminate the field of view according to the modulation signal;
• and
• comparing the response vector to the lookup table to determine which voxels are filled.

A non-transitory computer readable storage medium storing one or more programs configured for execution by one or more processors of an electronic system, the one or more programs comprising instructions for:

• identifying a plurality of device characteristics of an imaging device that includes one or more signal emitters and one or more signal detectors;
• illuminating the field of view by signals from the one or more signal emitters according to a modulation signal generated by the imaging device;
• at each of the signal detectors, obtaining a response signal from the field of view;
• sampling the response signals to form a response vector;
• obtaining a lookup table corresponding to the modulation signal and the device characteristics, wherein the field of view is partitioned into a 3-dimensional plurality of voxels, and the lookup table includes information that specifies, for each voxel, expected signals received by the signal detectors when the voxel is filled and the signal emitters illuminate the field of view according to the modulation signal;
• and
• comparing the response vector to the lookup table to determine which voxels are filled.