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. Which computers handle data composed of definite quantities of current?






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






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






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






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






6. Commercial systems often have a S/N of ____ but the HR systems used in digital fluoro have a S/N between ________.






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






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






9. What was the earliest computer device called?






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






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






12. What are devices that process information?






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






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






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






16. What is high-pass filtering also called?






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






18. Changes in window width are sometimes called gray scale ____ or ____.






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






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






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






22. Commercial units scan only 262.5 lines out of 525 in each pass thus producing ____ for diagnostic imaging.






23. What are devices such as keyboard - touch screen monitors - and voice-activation that you put into or connect to a computer?






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






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






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






27. Computers operate from ____ ____ language.






28. 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?






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






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






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






32. 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?






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






34. Window width and contrast have an ____ relationship.






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






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






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






38. 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.






39. A high contrast image has a ___ frequency.






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






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






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






43. What are the two most common output devices?






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






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






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






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






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






49. What is the name for a binary digit?






50. A low contrast image has a ___ frequency.