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MidtermReview2004 - Review Questions 1 Describe the...

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Review Questions 1. Describe the relationship between physical, mathematical and computational representations of images and the way they interact in the research and development of processing systems. 2. What is “signal space”? When we say that f and g are elements of signal space, what properties must they have? How can we treat images as elements of signal space? 3. Images can be represented in computers as arrays. Locations in arrays are determined by array coordinates ( A [ x, y, z, . . . ]) and array indexes ( A [ p ]). How does one translate between them? What information do you need to do the translation, and how do you use it? 4. Describe two approaches for the representation of color images. How does the choice affect the ability to represent color information? What are the strengths and weaknesses of each approach? 5. Given an index color image (a) Give the algorithm steps to construct a true-color image. (b) Give the algorithm steps to construct the intensity (gray scale) image. (c) How does the gray scale image differ from the array values? 6. Given a true-color image (a) Give the algorithm steps to construct an index color image. (b) Give the algorithm steps to construct the intensity image.
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