电子科发女学光电科学与工程学院 SCHOOL OF OPTOELECTRONIC SCIENCE AND ENGINEERING OF UESTC What is spatial domain The space where all pixels form an image In spatial domain we can represent an image by f(x,y),where x and y are coordinates along x and y axis with respect to an origin. There is duality between Spatial and Frequency Domains. Images in the spatial Using the Fourier domain are pictures in the transform,the word x,y plane where the word "distance"is lost but the "distance"is meaningful. word“frequency' becomes alive.What is spatial domain ? The space where all pixels form an image . In spatial domain we can represent an image by f(x,y), where x and y are coordinates along x and y axis with respect to an origin. There is duality between Spatial and Frequency Domains. Images in the spatial domain are pictures in the x,y plane where the word “distance” is meaningful. Using the Fourier transform, the word “distance” is lost but the word “frequency” becomes alive