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Digital Signal & Image Processing: Digital Image Fundamentals
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Digital Signal & Image Processing: Digital Image Fundamentals
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25 Questions

1. What is pixel?
2. What is the first and foremost step in Image Processing?
3. Which is a colour attribute that describes a pure colour?
4. Assume that an image f(x, y) is sampled so that the result has M rows and N columns. If the values Of the coordinates at the origin are (x, y) = (0, 0), then the notation (0, 1) is used to signify :
5. The spatial coordinates of a digital image (x,y) are proportional to:
6. Images quantised with insufficient brightness levels will lead to the occurrence of ____________
7. What is the tool used in tasks such as zooming, shrinking, rotating, etc.?
8. Dynamic range of imaging system is a ratio where the upper limit is determined by
9. The digitization process i.e. the digital image has M rows and N columns, requires decisions about values for M, N, and for the number, L, of gray levels allowed for each pixel. The value M and N have to be:
10. What is the expanded form of JPEG?
11. The transition between continuous values of the image function and its digital equivalent is called ______________
12. What is the correct sequence of steps in image processing?
13. How many number of steps are involved in image processing?
14. In which step of processing, the images are subdivided successively into smaller regions?
15. A continuous image is digitized at _______ points.
16. How is sampling accomplished when a sensing array is used for image acquisition?
17. The resulting image of sampling and quantization is considered a matrix of real numbers. By what name(s) the element of this matrix array is called __________
18. What is the step that is performed before color image processing in image processing?
19. What role does the segmentation play in image processing?
20. Let Z be the set of real integers and R the set of real numbers. The sampling process may be viewed as partitioning the x-y plane into a grid, with the central coordinates of each grid being from the Cartesian product Z2, that is a set of all ordered pairs (zi, zj), with zi and zj being integers from Z. Then, f(x, y) is a digital image if (x, y) are integers from Z2 and f is a function that assigns a gray-level value (that is, a real number from the set R) to each distinct coordinate pair (x, y). What happens to the digital image if the gray levels also are integers?
21. The digitization process i.e. the digital image has M rows and N columns, requires decisions about values for M, N, and for the number, L, of max gray levels. There are no requirements on M and N, other than that M and N have to be positive integer. However, the number of gray levels typically is
22. An image whose gray-levels span a significant portion of gray scale have __________ dynamic Range while an image with dull, washed out gray look have __________ dynamic range.
23. The digitization process i.e. the digital image has M rows and N columns, requires decisions about values for M, N, and for the number, L, of max gray levels. There are no requirements on M and N, other than that M and N have to be positive integer. However, the number of gray levels typically is
24. Quantitatively, spatial resolution cannot be represented in which of the following ways
25. How does sampling gets accomplished with a sensing strip being used for image acquisition?