Real-time processing for full-range FD-OCT with zero-filling interpolation using multiple GPUｓ

Real-time processing for full-range FD-OCT with zero-filling interpolation using multiple GPUｓ

Processing times

A: full range with zero-filling interpolation

B: half range with zero-filling interpolation

C: full range with simple linear interpolation

D: half range with simple linear interpolation

(a)full range OCT image

(b)standard OCT image

Imaging range : 5.0 × 6.78 mm2

We demonstrated full-range, real-time, 2048 axial × 1024 lateral pixel SD-OCT images using a zero-filling technique with a low-cost GPU. With a 15.73-ms data-transfer time for the low-cost frame grabber and a GPU processing time of 14.75 ms, the total time was shorter than the frame interval time of 36.70 ms using a 27.9-kHz line scan CCD camera.