Fig. 1
From: Short-term changes of choroidal vascular structures after phacoemulsification surgery
Image binarization for choroid with Niblack auto local thresholding technique. a Original EDI-OCT scan image. b Manual segmentation of the choroidal area with one central scan passing through the fovea. c Conversion of the image with the Auto Local Threshold tool. d Clear segmentation of black and white areas on the choroid with Niblack autolocal threshold. e binarized image was reconverted back to RGB image. f binarized image over the original EDI-OCT scan