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






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






3. A larger matrix provides ____ pixels.






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






5. 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?






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






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






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






9. Computers operate from ____ ____ language.






10. 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.






11. When was ENIAC invented?






12. Noise is ____ related to contrast.






13. Fluoroscopic noise mostly comes from what?






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






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






16. What is the name for a binary digit?






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






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






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






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






21. A low contrast image has a ___ frequency.






22. What determines resolution?






23. What is the name for an 8-bit word?






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






25. What are devices that process information?






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






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






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






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






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






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






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






33. Computer programs are called what?






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






35. What modalities are array processors useful for?






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






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






38. Which type of information consists of operating instructions?






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 is the 'heart' of every computer?






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






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






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






44. All medical imaging is achieved with which type of computers?






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






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






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






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






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






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