Test your basic knowledge |

Digital Image Processing

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

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






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






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






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






5. What was the earliest computer device called?






6. Extremely narrow window width requires the computer to ignore a ___ ____ of data outside the chosen range.






7. 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.






8. What are the two ways detectors acquire information?






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






10. The number of shades of gray is determined by what?






11. There is a ___ relationship between subject contrast and acquired data contrast.






12. Window width and contrast have an ____ relationship.






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






14. A low contrast image has a ___ frequency.






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






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






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






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






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






20. What 3 things were required prior to digital computer applications in medical imaging?






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






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






23. Fluoroscopic noise mostly comes from what?






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






25. What does a 0 in binary code stand for?






26. Computers operate from ____ ____ language.






27. Computerized digital images are described in terms of what






28. What permit input/output of information to or from the CPU?






29. A high contrast image has a ___ frequency.






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






31. What is the raw data to which a Fourier Transformation is applied to create the digital image?






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






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






34. Which type of information consists of operating instructions?






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






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






37. Window width and contrast have an ____ relationship.






38. What is the name for a binary digit?






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






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






41. Fluoroscopic noise mostly comes from what?






42. What are the two most common output devices?






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






44. When was ENIAC invented?






45. What is the raw data to which a Fourier Transformation is applied to create the digital image?






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






47. What is the 'heart' of every computer?






48. Increased noise = _____ image contrast.






49. When subject contrast is high - the acquired data contrast will be ____.






50. What does a 0 in binary code stand for?