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 the information stored as magnetic variations referred to as?






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






3. What determines resolution?






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






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






6. Computer equipment is called what?






7. What is the measure of the differences between the data values referred to as?






8. What changes the pixel value by addition or subtraction and controls image density?






9. Which type of information consists of operating instructions?






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






11. 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?






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






13. Which type of information consists of collected facts?






14. What type of memory storage devices are required for large amounts of data?






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






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






17. Computerized digital images are described in terms of what






18. What can memory be transferred as?






19. A larger matrix provides ____ pixels.






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






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






22. What are the two ways detectors acquire information?






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






24. What are the two most common output devices?






25. Window width and contrast have an ____ relationship.






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






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






28. What are the two ways detectors acquire information?






29. What does DICOM stand for?






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






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






32. 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?






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






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






35. What type of memory storage devices are required for large amounts of data?






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






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






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






39. What input device do radiographers use on a normal basis?






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






41. What is the name for a binary digit?






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






43. When detectors acquire their information through ____ they are receiving all the info at once.






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






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






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






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






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






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






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