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






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






3. What are devices that process information?






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






5. Computers operate from ____ ____ language.






6. What can memory be transferred as?






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






8. What is the name for a binary digit?






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






10. If window width increases - image contrast will ____.






11. What are the 3 classifications of digitized image filters?






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






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






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






15. 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.






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






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






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






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






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






21. A high contrast image has a ___ frequency.






22. 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?






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






24. What are the two most common output devices?






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






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






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






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






29. Modalities differ in bit depth that is available depending on the capabilities of what?






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






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






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






33. Noise is measured as what?






34. Which type of information consists of collected facts?






35. What does DICOM stand for?






36. Increased noise = _____ image contrast.






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






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






39. 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.






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






41. What is the frequency response of the incoming signal called?






42. What is the digital standard for imaging that is designed to ensure that all equipment fro all manufacturers who choose to adhere to the standard are speaking the same computer language?






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






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






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






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






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






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






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






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