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. Computer equipment is called what?






2. Increased noise = _____ image contrast.






3. Which type of information consists of operating instructions?






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






5. Density and contrast of the digital image are controlled by varying the ____ ____ of each pixel.






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






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






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






9. When was ENIAC invented?






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






11. What is accomplished by transforming the image into frequencies and making mathematical alteration to reproduce the image?






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






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






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






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






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






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






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






19. 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?






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






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






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






23. 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.






24. What are the two most common output devices?






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






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






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






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






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






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






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






32. What is the raw data to which a Fourier Transformation is applied to create the digital image?






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






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






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






36. What permit input/output of information to or from the CPU?






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






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






39. What type of memory storage device is inexpensive and the data is stored serially (difficult to access)?






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






41. What was the earliest computer device called?






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






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






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






45. What is the 'random-access' memory that usually functions as temporary storage for programming and operating instructions during use and is constantly changed/?






46. Resolution is controlled by what?






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






48. What permit input/output of information to or from the CPU?






49. 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.






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







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


Let me suggest you:

Browse all subjects

Browse all tests

Most popular tests



Major Subjects

Tests & Exams


AP
CLEP
DSST
GRE
SAT
GMAT

Browse all subjects

Browse all tests

Most popular tests