ImageProcessing1-Introduction-數(shù)字圖像處理-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)整體左右比:左半部和與右半部和之比。2)整體上下比:上半部和與下半部和之比。3)上部左右比:上左半部之和與上右半部和之比。4)左部上下比:左上半部和與左下半部和之比。5)上部上下比:上上半部和與上下半部和之比。Spacedistributionfeatures:整體和:整個(gè)矩陣中所有位置上的1都相加。左半部和:整個(gè)高度和長(zhǎng)度的1/2矩陣位置上的1都相加。右半部和:整體和減去左半部和。上半部和:整個(gè)長(zhǎng)度和上部高度為1/2的矩陣位置上的1都相加。下半部和:整體和減去上半部和。上左半部和:矩陣的1/4，靠近上面和左面位置上的1都相加。上右半部和:上半部和減去上左半部和。左上半部和:矩陣的1/4，靠近左邊和上邊位置上的1都相加。左下半部和:左半部和減去左上半部和。上上半部和:整個(gè)長(zhǎng)度矩陣的上部高度為1/4的位置上的1都相加。上下半部和:上半部和減去上上半部和。IDcardnumberrecognitionprocess:

FeaturesextractionThecharacteri