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Abstract

A computer-implemented method and system for equalizing the brightness, contrast and color of two or more images (206, 208) of an eye fundus (106). Because left and right images (206, 208) are taken from different camera (104) positions, or because two images (206, 208) have been taken at different times, the resulting images (206, 208) have different brightness, contrast and color. Groups (306, 308) are formed from the pixels making up the images (206, 208). The groups can be straight lines oriented perpendicularly to the direction of camera (104) motion. The intensity of each pixel in a group is measured, and the group's mean and variance are then calculated. The intensity of the groups are then adjusted in order that a group (306) from the left image (206) will have the same mean intensity and variance as the corresponding group (308) from the right image (208). The measurements and adjustments can be made for each of the red, green and blue intensities of each pixel.

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First Claim