Test your basic knowledge |

Digital Image Processing

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. What was the earliest computer device called?






2. ____ circuits permit simultaneous transmission of information while ____ circuits transmit sequentially.






3. When detectors acquire their information through ____ they are receiving all the info at once.






4. A low contrast image has a ___ frequency.






5. Computers operate from ____ ____ language.






6. What is high-pass filtering also called?






7. Computerized digital images are described in terms of what






8. What type of memory storage device is inexpensive and the data is stored serially (difficult to access)?






9. What was the earliest computer device called?






10. What is critical to how fast the computer system can function?






11. Digitalization of analog information (increases / reduces) the quality and quantity of information?






12. Computers operate from ____ ____ language.






13. Which type of information consists of operating instructions?






14. Noise is ____ related to contrast.






15. Commercial systems often have a S/N of ____ but the HR systems used in digital fluoro have a S/N between ________.






16. A high contrast image has a ___ frequency.






17. What does a 1 in binary code stand for?






18. The ____ is the heart of the computer while the ___ is the vessels.






19. What are the two ways detectors acquire information?






20. If the window level increases - density will _____.






21. In what time period did microchip technology come out?






22. Extremely wide window width requires the computer to ignore ___ contrast differences in order to display the entire range of data.






23. What does a 1 in binary code stand for?






24. When power is turned off - (ROM / RAM) is erased and (ROM / RAM) is maintained






25. Computer memory is often rated in terms of total ____ memory.






26. What is the 'noisiest' component of a digital system?






27. Which computers handle data composed of continuously varying electrical currents?






28. What changes the pixel value by multiplication or division and controls image contrast?






29. Window width and contrast have an ____ relationship.






30. Each box of an image matrix will display a ____ ____ which can be transformed into a visual brightness or density level.






31. A __ _____ disk will store over 10000000 bytes of information.






32. The computer either ____ or ____ selected frequencies during the filtering process.






33. What is a specialized computer that functions as a peripheral and uses CPU memory to perform mathematical operations at extremely high speed?






34. The _____ the matrix size - the better the resolution.






35. In medical imaging - each pixel value corresponds to a 3-D volume of tissue known as what?






36. All medical imaging is achieved with which type of computers?






37. Computer equipment is called what?






38. Increased noise = _____ image contrast.






39. The quality of the data acquired from the IR is measured by what three data characteristics?






40. Which type of information consists of collected facts?






41. What is a square series of boxes that gives form to the image?






42. Density and contrast of the digital image are controlled by varying the ____ ____ of each pixel.






43. What are the two ways detectors acquire information?






44. Changes in window width are sometimes called gray scale ____ or ____.






45. What is the name of the 'modern electronic computer'?






46. What type of scanning increases resolution slightly by scanning all 525 lines in order?






47. The quality of the data acquired from the IR is measured by what three data characteristics?






48. Which type of filter amplifies or deletes all but a selected range or band of frequencies and is useful in the elimination of characteristic emission peaks?






49. What directs information to and from various parts of the computer?






50. What is an image that has been converted into numerical values for transmission or processing?







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