Efficient data extraction method for high-temporal-and-spatial-resolution near infrared spectroscopy system

A data extraction method for a near infrared spectroscopy (NIRS) system, the method comprising:

• first operating a plurality of sources to emit lights;
• and
• second operating a plurality of detectors to detect the lights,
• wherein the sources and the detectors form a plurality of first hexagonal subsets, each of the first hexagonal subsets having one source at a center and six detectors at hexagonal vertexes, and two hexagonal vertex are shared between neighboring first hexagonal subsets.

One or more non-transitory computer-readable storage media having stored thereon a computer program that, when executed by one or more processors causes the one or more processors to perform acts that extract a data, comprising:

• first operating a plurality of sources to emit lights;
• and
• second operating a plurality of detectors to detect the lights,
• wherein the sources and the detectors form a plurality of first hexagonal subsets, each of the first hexagonal subsets having one source at a center and six detectors at hexagonal vertexes, and two hexagonal vertex are shared between neighboring first hexagonal subsets.