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 the 3 classifications of digitized image filters?






2. What type of scanning increases resolution but can't be used in real-time dynamic studies?






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






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






5. What are the two ways detectors acquire information?






6. Computer programs are called what?






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






8. What are the two most common output devices?






9. A larger matrix provides ____ pixels.






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






11. What is high-pass filtering also called?






12. 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.






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






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






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






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






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






18. A high contrast image has a ___ frequency.






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






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






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






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






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






24. Which type of information consists of operating instructions?






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






26. 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.






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






28. Fluoroscopic noise mostly comes from what?






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






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






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






32. Which type of information consists of collected facts?






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






34. Noise is measured as what?






35. Resolution is controlled by what?






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






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






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






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






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






41. Which memory replaces new information with the old; can change?






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






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






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






45. Computers operate from ____ ____ language.






46. What determines resolution?






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






48. What is high-pass filtering also called?






49. A low contrast image has a ___ frequency.






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