Systems and methods for generating enhanced opthalmic images

A ophthalmic image processing method, comprising:

• generating an image stream comprising a first frame capturing a branch of veins in an eye of a patient and a second frame capturing the branch of veins in the eye, the second frame following the first frame in the image stream;
• calculating first order statistics for individual blocks of a plurality of blocks for the first frame, the individual blocks of the plurality of blocks for the first frame comprising a plurality of first frame pixels;
• interpolating first order statistics for the first frame based on the calculated first order statistics for the individual blocks of the plurality of blocks for the first frame, wherein the first order statistics for the first frame are based, at least in part, on the branch of veins;
• generating a tone mapping function for pixels of the second frame based on the interpolated first order statistics for the first frame;
• calculating tone mapping values for individual pixels of the second frame based on the tone mapping function;
• and
• generating an enhanced frame based on application of the calculated tone mapping values for individual pixels of the second frame to the pixels of the second frame.

An ophthalmic imaging device comprising:

• an image capture component configured to generate an image stream of at least a portion of an eye of a patient, the image stream comprising a first frame capturing a branch of veins in the eye and a second frame capturing the branch of veins in the eye, the second frame following the first frame in the image stream;
• and
• an image processor configured to:
• divide the first frame into a plurality of blocks, each block comprising a plurality of pixels;
• identify image enhancement parameters for the first frame based on the plurality of blocks, wherein the image enhancement parameters for the first frame are based, at least in part, on the branch of veins;
• generate an image enhancement function for the second frame based on the identified image enhancement parameters of the first frame;
• apply the image enhancement function to the second frame with the identified image enhancement parameters for the first frame;
• and
• generate an enhanced frame based on application of the image enhancement function to the second frame.