When applied to panoramic images, an extended subtraction method is helpful in monitoring changes around dental implants, according to a new study in Clinical Oral Implants Research (June 2, 2011).
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ABSTRACT.To detect objects that vary in brightness or spatial coordinates over time, C. Alard and R. H. Lupton in 1998 proposed an “optimal image subtraction” (OIS) method that constructs a ...
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