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 required for collection of input information?






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






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






4. What is the measure of the differences between the data values referred to as?






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






6. Digital detectors are capable of producing ______ shades of gray.






7. What is the system of conductors that connects the various components of a computer system and permits the CPU to accept inputs from any point along the conductor?






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






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






10. 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.






11. 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?






12. Noise is measured as what?






13. Computers operate from ____ ____ language.






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






15. Digital detectors are capable of producing ______ shades of gray.






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






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






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






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






20. A high contrast image has a ___ frequency.






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






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






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






24. Noise is ____ related to contrast.






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






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






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






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






29. 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?






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






31. Computer equipment is called what?






32. What is high-pass filtering also called?






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






34. Window width and contrast have an ____ relationship.






35. A high contrast image has a ___ frequency.






36. What was the earliest computer device called?






37. Computers operate from ____ ____ language.






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






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






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






41. What is the measure of the differences between the data values referred to as?






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






43. Increased noise = _____ image contrast.






44. 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.






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






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






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






48. Which type of information consists of operating instructions?






49. Which type of information consists of collected facts?






50. Computerized digital images are described in terms of what