ImageProcessing1-Introduction-数字图像处理-英文版

DigitalImageProcessingHuangtaoContentsWhatisdigitalimageprocessing?KeystagesindigitalimageprocessingIDcardnumberrecognitionprocessWhatisDigitalImageProcessing?Thecontinuumfromimageprocessingtocomputervisioncanbebrokenupintolow-,mid-andhigh-levelprocessesLowLevelProcessInput:Image

Output:ImageExamples:

NoiseremovalimagesharpeningMidLevelProcessInput:Image

Output:AttributesExamples:

ObjectrecognitionHighLevelProcessInput:AttributesOutput:UnderstandingExamples:SceneunderstandingautonomousnavigationKeyStagesinDigitalImageProcessing:

ImageAquisitionImageAcquisitionImageRestorationMorphologicalProcessingSegmentationObjectRecognitionImageEnhancementFeatureextractionProblemDomainColourImageProcessingImageCompressionKeyStagesinDigitalImageProcessing:

ImageEnhancementImageAcquisitionImageRestorationMorphologicalProcessingSegmentationObjectRecognitionImageEnhancementFeatureextractionProblemDomainColourImageProcessingImageCompressionKeyStagesinDigitalImageProcessing:

ImageRestorationImageAcquisitionImageRestorationMorphologicalProcessingSegmentationObjectRecognitionImageEnhancementFeatureextractionProblemDomainColourImageProcessingImageCompressionKeyStagesinDigitalImageProcessing:

MorphologicalProcessingImageAcquisitionImageRestorationMorphologicalProcessingSegmentationObjectRecognitionImageEnhancementFeatureextractionProblemDomainColourImageProcessingImageCompressionKeyStagesinDigitalImageProcessing:

SegmentationImageAcquisitionImageRestorationMorphologicalProcessingSegmentationObjectRecognitionImageEnhancementFeatureextractionProblemDomainColourImageProcessingImageCompressionKeyStagesinDigitalImageProcessing:

ObjectRecognitionImageAcquisitionImageRestorationMorphologicalProcessingSegmentationObjectRecognitionImageEnhancementFeatureextractionProblemDomainColourImageProcessingImageCompressionKeyStagesinDigitalImageProcessing:

Representation&DescriptionImageAcquisitionImageRestorationMorphologicalProcessingSegmentationObjectRecognitionImageEnhancementFeatureextractionProblemDomainColourImageProcessingImageCompressionKeyStagesinDigitalImageProcessing:

ImageCompressionImageAcquisitionImageRestorationMorphologicalProcessingSegmentationObjectRecognitionImageEnhancementFeatureextractionProblemDomainColourImageProcessingImageCompressionKeyStagesinDigitalImageProcessing:

ColourImageProcessingImageAcquisitionImageRestorationMorphologicalProcessingSegmentationObjectRecognitionImageEnhancementFeatureextractionProblemDomainColourImageProcessingImageCompressionIDcardnumberrecognitionprocess:

ImagepreprocessingGrayimageRGBimageConvertsRGBimagetograyimage:Wedon'tneedtoomuchcolorinformationIDcardnumberrecognitionprocess:

ImagepreprocessingGrayimageBinaryimageConvertsgrayimagetobinaryimage:Thebinaryimagecontrastismoreobvious,itiseasiertohighlighttheoutlineofthetargetIDcardnumberrecognitionprocess:

ImagesegmentationBinaryimagedigitalareaimageThesegmentationofdigitalarea:IDcardnumberrecognitionprocess:

Imagesegmentationdigitalareaimage0-1exchangeimage0-1exchangetomaketheimagemoreeye-catchingSubregionsegmentationInordertoeffectivelyextractcharacteristicsofeverynumberIDcardnumberrecognitionprocess:

FeaturesextractionEulernumberfeatures:EulernumberisdefinedastheNumberofobjectsintheimageminustheNumberofholesoftheseobjectsIDcardnumberrecognitionprocess:

Featuresextraction1)整体左右比:左半部和与右半部和之比。2)整体上下比:上半部和与下半部和之比。3)上部左右比:上左半部之和与上右半部和之比。4)左部上下比:左上半部和与左下半部和之比。5)上部上下比:上上半部和与上下半部和之比。Spacedistributionfeatures:整体和:整个矩阵中所有位置上的1都相加。左半部和:整个高度和长度的1/2矩阵位置上的1都相加。右半部和:整体和减去左半部和。上半部和:整个长度和上部高度为1/2的矩阵位置上的1都相加。下半部和:整体和减去上半部和。上左半部和:矩阵的1/4，靠近上面和左面位置上的1都相加。上右半部和:上半部和减去上左半部和。左上半部和:矩阵的1/4，靠近左边和上边位置上的1都相加。左下半部和:左半部和减去左上半部和。上上半部和:整个长度矩阵的上部高度为1/4的位置上的1都相加。上下半部和:上半部和减去上上半部和。IDcardnumberrecognitionprocess:

FeaturesextractionThecharacteri