Multipath signal removal in time-of-flight camera apparatus

A computer system for facilitating removal of multipath signal interference from light data, comprising:

• one or more processors;
• and
• one or more computer-readable media having stored thereon executable instructions that when executed by the one or more processors configure the computer system to perform at least the following:
• illuminate, with an illumination unit, a target with a light source, wherein the illumination unit is configured to project a high spatial-frequency pattern onto the target in such a way as to redistribute spectral energy to higher frequencies;
• acquire, with a sensor unit, reflected light data reflected from the target, wherein the reflected light data comprises:
• an array of spatial domain information received from light reflected by the target, and
• time-of-flight data for light that illuminated the target;
• generate multipath-compensated light data by processing, with the one or more processors, the reflected light data, wherein the processing applies a high-pass filter within the spatial domain to the reflected light data;
• and
• determine, with the one or more processors and based upon the multipath-compensated light data, one or more distances that extend between the sensor unit and one or more portions of the target.

A method, implemented at a computer system that includes one or more processors, for facilitating removal of multipath signal interference from light data, the method comprising:

• illuminating, with an illumination unit, a target with a light source, wherein the illumination unit is configured to project a high spatial-frequency pattern onto the target in such a way as to redistribute spectral energy to higher frequencies;
• acquiring, with a sensor unit, reflected light data reflected from the target, wherein the reflected light data comprises an array of spatial domain information received from light reflected by the target;
• and
• processing, with the one or more processors, the reflected light data, wherein the processing applies a high-pass filter within the spatial domain to the reflected light data.