IMAGE PROCESSING TECHNIQUES

← Back to document page

Part 1: IMAGE PROCESSING 1IMAGE 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 to show what kind of information is expressed through the imagesobtained by these IMAGE is the optical representation of an object illuminated by a radiation source.

After the spectrometer they move outside the optical axis and are caught by the spectrometer slit. Only the unscattered electrons (electrons which suffered no energy loss) reach the final image plane and such imaging is called zero-loss electron spectroscopic imaging (ZLESI). Zero-loss filtering not only increases the contrast, also a better ...

  Imaging, Spectrometer