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 is critical to how fast the computer system can function?






2. What determines resolution?






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






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






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






6. Fluoroscopic noise mostly comes from what?






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






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






9. 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?






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






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






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






13. A larger matrix provides ____ pixels.






14. Resolution is controlled by what?






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






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






17. What can memory be transferred as?






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






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






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






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






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






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






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






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. 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.






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






28. DICOM imaging now includes compatibility via a database system that includes linage of the patient images with the patient's EMR. This database system is called what?






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






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






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






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






33. What are devices that process information?






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






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






36. 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.






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






38. Which type of information consists of collected facts?






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. Window width and contrast have an ____ relationship.






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






42. What is required for collection of input information?






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






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






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






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






47. Increased noise = _____ image contrast.






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






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






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