Transcription of IMAGE PROCESSING TECHNIQUES
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Part 1: IMAGE PROCESSING 1 IMAGE PROCESSING TECHNIQUESThis part deals with the formation, acquisition and PROCESSING of images. Its contents can bebest represented as a diagram where the evolution of the considered information (images)and the processes involved are Level ImageImage Acquisitionelectron-solid interactiondetection of elastically & in-elastically scattered electronsImage EnhancementImage SegmentationBinary ImageDataImage Measurementanalog-to-digital 1: IMAGE PROCESSING Basics of IMAGE formationSince only the images obtained by a scanning electron microscope (SEM) and a transmissionelectron microscope (TEM) were used in this work and since both TECHNIQUES are well-established, only a brief introduction is given on the principles and instrumentation of SEMand TEM aiming
b) scintillator-photomultiplier combination which is used for recording secondary electrons. The secondary electrons are detected by a scintillator-photomultiplier combination which is known as the Everhart-Thornley detector. Its construction is shown in Fig. 1.1.2b which is taken form [1.1.2]. The secondary electrons are collected by a grid.
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