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 two most common output devices?






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






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






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






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






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






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






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






9. What modalities are array processors useful for?






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






13. Computer equipment is called what?






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






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






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






17. What is the 'heart' of every computer?






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






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






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






21. 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?






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






23. What is required for collection of input information?






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






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






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






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






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






29. 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?






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






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






32. What determines resolution?






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






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






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






36. What is high-pass filtering also called?






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






38. Which type of filter amplifies or deletes all but the high frequencies - appears to increase contrast - and is useful in vascular imaging or digital mammo.






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






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






41. What can memory be transferred as?






42. What are the two types of information computers use?






43. Which type of information consists of collected facts?






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






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






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






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






48. When detectors acquire their information by ____ they are receiving info from a specific area.






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






50. 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?