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 are devices that process information?






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






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






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






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






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






7. 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?






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






9. Computer equipment is called what?






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






11. What can memory be transferred as?






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






13. What is an individual matrix box or picture element?






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






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






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






17. Computers operate from ____ ____ language.






18. 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.






19. What determines resolution?






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






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






22. Noise is ____ related to contrast.






23. 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?






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






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






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






27. A low contrast image has a ___ frequency.






28. Noise is ____ related to contrast.






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






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






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






32. Which type of information consists of operating instructions?






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






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






35. What is the process used in low-pass filtering that is accomplished by averaging adjacent pixels values?






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






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






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






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






40. What is required for collection of input information?






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






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






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






44. 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?






45. Computerized digital images are described in terms of what






46. Fluoroscopic noise mostly comes from what?






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






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






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






50. What input device do radiographers use on a normal basis?