标签: adjustments

:Manydevicesthatrequireauserinterfacetoadjusttemperature,backlightintensity,andsupplyvoltagearesubjectedtoinadvertentadjustmentstotheirsettings.Usingadigitalpotentiometerinthesedevicesenablesdesignerstoimplementasimplehardware-basedtechniquetoavoidtheseinadvertentadjustments.……

Imagesareadescriptionofhowaparametervariesoverasurface.Forexample,standardvisualimagesresultfromlightintensityvariationsacrossatwo-dimensionalplane.However,lightisnottheonlyparameterusedinscientificimaging.Forexample,animagecanbeformedofthetemperatureofanintegratedcircuit,bloodvelocityinapatient'sartery,x-rayemissionfromadistantgalaxy,groundmotionduringanearthquake,etc.Theseexoticimagesareusuallyconvertedintoconventionalpictures(i.e.,lightimages),sothattheycanbeevaluatedbythehumaneye.Thisfirstchapteronimageprocessingdescribeshowdigitalimagesareformedandpresentedtohumanobservers.CHAPTERImageFormation&Display23Imagesareadescriptionofhowaparametervariesoverasurface.Forexample,standardvisualimagesresultfromlightintensityvariationsacrossatwo-dimensionalplane.However,lightisnottheonlyparameterusedinscientificimaging.Forexample,animagecanbeformedofthetemperatureofanintegratedcircuit,bloodvelocityinapatient'sartery,x-rayemissionfromadistantgalaxy,groundmotionduringanearthquake,etc.Theseexoticimagesareusuallyconvertedintoconventionalpictures(i.e.,lightimages),sothattheycanbeevaluatedbythehumaneye.Thisfirstchapteronimageprocessingdescribeshowdigitalimagesareformedandpresentedtohumanobservers.DigitalImageStructure……