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时间:2023-11-01 17:43:43 下载该word文档
1.Image(图像):(1)①Picture,Photograph(图片)②Visualdata(可视数据)③Usuallytwo-orthree-dimensional(常为二维或三维);(2)书本概念:animagemaybedefinedasatwo-dimensionalfunctionf(x,y,whenxandyarespatial(plane)coordinates,andtheamplitudeoffatanypairofcoordinates(x,yiscalledtheintensityorgrayleveloftheimageatthatpoint(一幅图像可以定义为一个二维函数f(x,y)x和y均为空间(平面)坐标,在任何一对空间坐标中的幅值f称为图像在该点的强度和灰度。2.digitalimage(数字图像):(1)①Animagewhichis“discretized,”i.e.,definedonadiscretegrid(ex.scanner(一个被离散化的图像,即在一个离散的网格(例如,扫描仪上定义);②>>>>Two-dimensionalcollectionoflightintensityvalues(orgrayvalues(二维光强度值(或灰度值的集合)③Matrix,two-dimensionalfunction(矩阵,二维函数)(2)书本概念:Whenx,y,andtheintensityvaluesoffareallfinite,discretequantities(当x,y和灰度值f均为有限离散数值时,称为数字图像)。3.digitalimageprocessing(数字图像处理):processdigitalimagebymeansofadigitalcomputer(借助于数字计算机来处理数字图像)。4.pixel(像素):denotetheelementsofadigitalimage(描述数字图像元素)。5.exampleoffieldthatusedigitalimageprocessing(使用数字图像处理领域的实例)见课本P29。6.fundamentalstepsindigitalimageprocessing(数字图像处理的基本步骤):①ImageAcquisition(图像获取)②imageenhancementandrestoration(图像增强与恢复)③imagesegmentation(图像分割)④featureselection(特征选择;此过程又称为description(描述))⑤ImageRepresentation(图像表示)⑥imageinterpretation(图像解释;此过程也可称为imagerecognition(图像识别))。7.structureofthehumaneye(人眼结构)(成像原理)见P58。8.Thecolorsthathumansperceiveinanobjectaredeterminedbythenatureofthelightreflectedfromtheobject(人体感受一个物体的颜色有物体反射光的性质决定)。9.monochromatic(orachromatic)light(单色光或无色光):lightthatisvoidof
color(没有颜色的光);theonlyattributeofitisitsintensityoramount(它唯一的属性就是强度或大小)。10.graylevel(灰度级):denotemonochromaticintensity(表示单色光的强度)。11.grayscale(灰度级/灰阶):therangeofmeasuredvaluesofmonochromaticlightfromblacktowhite(从黑到白的单色光的度量值范围)。12.chromatic(color)light(彩色光):spanstheelectromagneticenergyspectrumfromapproximately0.43to0.79μm