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. Electrical connections between the CPU and the other components rung along a system of series or parallel conductors called what?






2. What are the 3 classifications of digitized image filters?






3. Increased noise = _____ image contrast.






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






5. Computer equipment is called what?






6. What is the primary limitation with the resolution on digital images?






7. Modalities differ in bit depth that is available depending on the capabilities of what?






8. Computer programs are called what?






9. What modalities are array processors useful for?






10. What is the frequency response of the incoming signal called?






11. What type of memory storage devices are required for large amounts of data?






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






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






14. The human visual range is ___ or fewer shades of gray.






15. Computer programs are called what?






16. Which memory can only be extracted without alteration; cannot change?






17. Which type of information consists of operating instructions?






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






19. In what time period did mathematical theory and solid-state electronics come out?






20. Which type of filter amplifies or deletes all but the high frequencies - appears to increase contrast - and is useful in vascular imaging or digital mammo.






21. What is the 'read-only' memory that contains basic operating instructions that are almost never changing?






22. What is the random background information that does not contribute to the image quality?






23. It is important that the radiographer understand anatomy from different perspectives due to the methods of digital processing and image information? What are the 3 perspectives?






24. What are devices that process information?






25. What are the two most common output devices?






26. Which memory replaces new information with the old; can change?






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






28. What is the frequency response of the incoming signal called?






29. What is the mathematical algorithm used to create all medical images?






30. Who or What is responsible for density changes on a digital image? On a manual image






31. What is the 'random-access' memory that usually functions as temporary storage for programming and operating instructions during use and is constantly changed/?






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






33. Noise is measured as what?






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






35. What are devices that process information?






36. What is the information stored as magnetic variations referred to as?






37. Binary systems operate with a ___-symbol language.






38. In what time period did mathematical theory and solid-state electronics come out?






39. Computerized digital images are described in terms of what






40. Which memory replaces new information with the old; can change?






41. Because the range of stored densities is so much wider than the visual range - any digital image is only a small part of the total data obtained - each image is a _____ on the total range of data.






42. Because electrical currents are understood as being either on or off - the binary system consists of information recorded as either a _ for off or a _ for on.






43. Which type of filter amplifies or deletes all but low frequencies - appears to reduce contrast - and is often used to remove high frequency nose.






44. What are the two most common output devices?






45. Window width and contrast have an ____ relationship.






46. What is required for collection of input information?






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






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






49. What is the information stored as magnetic variations referred to as?






50. Medical imaging is often achieved from information that has been processed by what?







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