Introduction to Digital Image and Video Processing Quantized Images The other part of image digitization is quantization. The values that a (single-valued) image takes are usually intensities, since they are a
1.4 DIGITIZATION OF IMAGES The environment around us exists, at any reasonable scale of observation, in a space/time continuum. Likewise, the signals and images that are abundantly available in the environment (before being sensed) are naturally analog. By analog we mean two things: that the si...
The processes that form the continuous physical image , which contains the various shades of luminous intensity of the corresponding points of the scene, are described through the process of digitization , we arrive at a discrete digital image . This digitalization process takes place in two phases...
6. What are the two processes of image digitization?How do they affect the quality of digitized images? Sampling is to transform the continuous image into discrete points in space. The higher the sampling frequency is, the more real the restored image will be. Quantization is to convert the ...
Todays lecture Frequency spectrum of an image Explain the sampling of the 2 dimension image The second stage of the digitization process. In the first sampling and in the second quantization of each of the samples. Optimum mean square error or Lloyd-max quantizer. Designing of an optimum quanti...
Chapter Three: Image Digitization and Display 3.1. Introduction 3.2. Digitizing Images 3.2.1. Resolution 3.2.2. Sampling 3.2.3. Interpolation 3.2.4. Aliasing 3.2.5. Noise 3.2.6. Shading 3.2.7. Photometry 3.2.8. Geometric Distortion 3.3. Overall System Design 3.3.1. Cumulative Resolution 3.3....
Sampling & Quantization • Computer processing: image f(x,y) must be digitized both spatially and in amplitude • Digitization in spatial coordinates: sampling • Digitization in amplitude: quantization 11 • Image: [f(i,j)] NxM • What should be the values of N, M and the numb...
Sensing,Sampling,Quantization A2Ddigitalimageisformedbyasensorwhichmapsaregiontoamatrix Digitizationofthespatialcoordinates(x,y)inanimagefunctionf(x,y)iscalledSampling Digitizationoftheamplitudeofanimagefunctionf(x,y)iscalledQuantization GrayLevelandColorImages ...
and convolution 2.1.3 The Fourier transform 2.1.4 Images as a stochastic process 2.1.5 Images as linear systems 2.2 Image digitization 2.2.1 Sampling 2.2.2 Quantization 2.2.3 Color images 2.3 Digital image properties 2.3.1 Metric and topological properties of digital images 2.3.2 Histograms 2.3...
Local computer 44 may perform the digitization process 22 illustrated in FIG. 4a. The sequence of images are forwarded to compression file server 46, which may be a high-performance workstation or other similarly powerful computer. In the exemplary system of FIG. 5a, compression file server 46...