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 an individual matrix box or picture element?






2. What was the earliest computer device called?






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






4. What is the equation for determining gray scale bit depth?






5. When detectors acquire their information by ____ they are receiving info from a specific area.






6. Around what time did digital computerization come out for CT and US?






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






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






9. A larger matrix provides ____ pixels.






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






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






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






13. When detectors acquire their information by ____ they are receiving info from a specific area.






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






15. Noise is ____ related to contrast.






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






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






18. What does DICOM stand for?






19. Which type of information consists of collected facts?






20. A larger matrix provides ____ pixels.






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






22. 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.






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






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






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






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






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






28. What provides specific instructions for calculations and sequential steps to be followed?






29. Computer equipment is called what?






30. Each pixel is capable of representing a wide range of what?






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






32. 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?






33. Noise is measured as what?






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






35. What are the two types of information computers use?






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






37. A high S/N indicates ___ noise in the image.






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






39. Computer equipment is called what?






40. Noise is ____ related to contrast.






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






42. What is the name for an 8-bit word?






43. What can memory be transferred as?






44. What determines resolution?






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






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






47. What determines resolution?






48. What type of scanning increases resolution but can't be used in real-time dynamic studies?






49. Scanners - mouse - keyboard - input memory disk drive - and paper printers are all forms of what?






50. What is the name for a binary digit?