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. In what time period did microchip technology come out?






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






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






4. What is accomplished by transforming the image into frequencies and making mathematical alteration to reproduce the image?






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






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






7. Medical imaging is often achieved from information that has been processed by what?






8. What can memory be transferred as?






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






10. Computerized digital images are described in terms of what






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






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






13. Computers operate from ____ ____ language.






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






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






16. The human visual range is ___ or fewer shades of gray.






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






18. 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?






19. What are devices that process information?






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






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






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






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






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






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






26. What was the earliest computer device called?






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






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






29. What are the two ways detectors acquire information?






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






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






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






33. Computer programs are called what?






34. What is the information stored as magnetic variations referred to as?






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






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






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






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






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






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






41. When was ENIAC invented?






42. Resolution is controlled by what?






43. Computerized digital images are described in terms of what






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






45. Computers operate from ____ ____ language.






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






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






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






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






50. A low contrast image has a ___ frequency.