title: A near-infrared (NIR) technique for imaging food materials.
abstract: The results of imaging experiments in food materials are presented, using near-infrared wavelengths. The technique uses a modulated source and a lock-in amplifier detection circuit to give a high sensitivity to changes in through-transmission signal levels. This is shown to lead to a set of images, whereby the internal content of various foods can be imaged. Examples are presented of the detection of foreign bodies, both metallic and nonmetallic, to illustrate the imaging performance.
authors.affiliation: Univ. of Warwick, Coventry, U.K.
authors.forename: P
authors.initials: P
authors.lastname: Pallav
authors.forename: G G
authors.initials: GG
authors.lastname: Diamond
authors.forename: D A
authors.initials: DA
authors.lastname: Hutchins
authors.forename: R J
authors.initials: RJ
authors.lastname: Green
authors.forename: T H
authors.initials: TH
authors.lastname: Gan
mesh_terms: D003257:Consumer Product Safety; D005504:Food Analysis / Q000295:instrumentation* / Q000379:methods*; D005506:Food Contamination / Q000032:analysis*; D005513:Food Inspection / Q000295:instrumentation / Q000379:methods; D006801:Humans; D019265:Spectroscopy, Near-Infrared / Q000379:methods*