of actual samples to be viewed, and an image of the field of view is recorded.
The image thus acquired is the background image. It represents the intensity
variations that occur without a specimen in the light path, leaving only those
due to any inhomogeneity in illumination source, system optics, or camera.
It can then be used to correct all subsequently recorded images. When the
background image is subtracted from a given image, areas that are similar to
the background will be replaced with values close to the mean background
intensity. The process, called background subtraction, is applied to even out the
background intensity variations in a microscope image. It should be noted that,
if the camera is logarithmic with a gamma of 1.0, then the background ...