“… - Pre‐processing methods : Ones that correct the intensity loss with modified optics as the images are being captured (Atkins & De Paula, 1994; Chen et al , 1995; Becker, 1996; Song et al , 1996). More recently, a method, which manipulates the photomultiplier gain, was introduced to counter the high intensity losses in the deep layers of the specimen by Ĉapek et al (2006).
- Post‐processing methods : These methods compensate the images after they are captured (Rigaut & Vassy, 1991; Oostveldt et al , 1998; Ortiz et al , 1999; Kervrann et al , 2004; Ĉapek et al , 2005). Intensity decay function (IDF)–based methods model intensity loss in the images as a parametric decay function of depth or time.
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