Test your basic knowledge |

Digital Image Processing

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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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 does DICOM stand for?






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






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






4. What is the name for a binary digit?






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






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






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






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






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






10. Computers operate from ____ ____ language.






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






12. Noise is ____ related to contrast.






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






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






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






16. Computer equipment is called what?






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






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






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






20. What can memory be transferred as?






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






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






23. When was ENIAC invented?






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






25. 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?






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






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






28. 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.






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






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






31. 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?






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






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






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






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






36. Digitalization of analog information (increases / reduces) the quality and quantity of information?






37. What are the two most common output devices?






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






39. 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.






40. 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?






41. A larger matrix provides ____ pixels.






42. What is a specialized computer that functions as a peripheral and uses CPU memory to perform mathematical operations at extremely high speed?






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






44. Computer equipment is called what?






45. What was the earliest computer device called?






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






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






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






49. Increased noise = _____ image contrast.






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







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