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Digital Image Processing (CS/ECE 545) Introduction to ...

Digital Image Processing (CS/ECE 545) Lecture 1: Introduction to Image Processing and ImageJProf Emmanuel AguComputer Science Polytechnic Institute (WPI)What is an Image ? 2 dimensional matrix of Intensity (gray or color) valuesSet of Intensity valuesImage coordinatesare integersExample of Digital Imagesa)Natural landscapeb)Synthetically generated scenec)Poster graphicd)Computer screenshote)Black and white illustrationf)Barcodeg)Fingerprinth)X rayi)Microscope slidej)Satellite Imagek)Radar imagel)Astronomical objectImaging SystemCredits: Gonzales and WoodsExample: a cameraConverts light to imageDigital Image ? Remember: digitizationcauses a Digital Image to become an approximationof a real scene1 pixelImages taken from Gonzalez & Woods, Digital Image Processing (2002)Real imageDigital Image (an approximation)Real imageDigital Image (an approximation) Digital Image Common Image formats include: 1 values per point/pixel (B&W or Grayscale) 3 values per point/pixel (Red, Green, and Blue) 4 values per point/pixel (Red, Green, Blue, + Alpha or Opacity) We will start with gray scale images, extend to color laterGrayscaleRGBRGBAWhat is Image Processing ?

Ultrasound (not EM waves) Human Visual System: Structure Of The Human Eye ... An image is focused onto retina exciting the rods and ...

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  Image, Processing, Focused, Digital, Ultrasound, Digital image processing, Cs ece

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