![]() Bottom is the final "focus stacked" image.įocus stacking (also known as focal plane merging and z-stacking or focus blending) is a digital image processing technique which combines multiple images taken at different focus distances to give a resulting image with a greater depth of field (DOF) than any of the individual source images. Top right are the three masks used to obtain the contributions of their respective images to the final "focus stacked" image (black is no contribution, white is full contribution). Top left are the three source images captured at three different focus distances. This example is of a diatom microfossil in diatomaceous earth. Focus stacking (for extended depth of field) in bright field light microscopy.
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