Method, device and system for optical property measurement based on spatial frequency domain imaging

A system for optical property measurement based on spatial frequency domain imaging, comprising:

• a light source, configured to emit light;
• an optical modulation device, configured to obtain a first target sinusoidal light pattern with a specified spatial frequency by modulating first light emitted by the light source in a spatial frequency domain, and to irradiate the first target sinusoidal light pattern to a surface of a sample to be detected, the number of coded bits of the first target sinusoidal light pattern is smaller than a preset number of bits, wherein the preset number of bits is greater than or equal to 2 bits, and the number of coded bits of the first target sinusoidal light pattern is 1 bit;
• an imaging detection device, configured to collect light intensity distribution data of second light, the second light is formed after the first target sinusoidal light pattern is reflected by the sample to be detected;
• a control device, respectively connected with the optical modulation device and the imaging detection device, configured to control the operation of the optical modulation device and the imaging detection device, and to determine one or more optical property parameters of the sample to be detected according to the light intensity distribution data of the second light.