OCT signal processing device and recording medium

An optical coherence tomography (OCT) signal processing device configured to process OCT signals, comprising:

• an OCT device for detecting OCT signals based on reflection light of measurement light applied to a subject and reference light corresponding to the measurement light;
• and
• a central processing unit (CPU) configured to:
• acquire three or more OCT signals, each of the three or more OCT signals being temporally different from each other with respect to a same position on the subject from the OCT device;
• extract a plurality of OCT signals from the three or more OCT signals;
• select two or more sets of OCT signals from the plurality of OCT signals, the two or more sets of OCT signals having different time intervals, and calculate motion contrast for each of the selected two or more sets,
• wherein the two or more sets of OCT signals having different time intervals include a temporally separated set of extracted OCT signals which are not temporally adjacent, and
• wherein the CPU is further configured to synthesize motion contrasts calculated for each of the two or more sets.

A non-transitory computer readable recording medium storing an optical coherence tomography (OCT) signal processing program configured to be executed in an OCT signal processing device that processes OCT signals, the program being configured to be executed by a processor of the OCT signal processing device and cause the OCT signal processing device to perform:

• acquisition of three or more OCT signals, each of the three or more OCT signals being temporally different from each other with respect to a same position on a subject, from an OCT device that detects an OCT signal based on reflection light of measurement light applied to a subject and reference light corresponding to the measurement light;
• extraction of a plurality of OCT signals from the three or more OCT signals;
• selection of two or more sets of OCT signals from the plurality of OCT signals, the two or more sets of OCT signals having different time intervals and calculation of motion contrast for each of the selected two or more sets respectively,
• wherein the two or more sets of OCT signals having different time intervals include a temporally separated set of extracted OCT signals which are not temporally adjacent, and
• wherein the CPU is further configured to synthesize motion contrasts calculated for each of the two or more sets.