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. A high contrast image has a ___ frequency.






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






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






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






5. What determines resolution?






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






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






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






9. In medical imaging - each pixel value corresponds to a 3-D volume of tissue known as what?






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






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






12. ____ circuits permit simultaneous transmission of information while ____ circuits transmit sequentially.






13. Increased noise = _____ image contrast.






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






15. 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.






16. A low contrast image has a ___ frequency.






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






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






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






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






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






22. What modalities are array processors useful for?






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






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






25. What can memory be transferred as?






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






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






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






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






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






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






32. What is the system of conductors that connects the various components of a computer system and permits the CPU to accept inputs from any point along the conductor?






33. In what time period did mathematical theory and solid-state electronics come out?






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






35. Noise is ____ related to contrast.






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






37. What is the system of conductors that connects the various components of a computer system and permits the CPU to accept inputs from any point along the conductor?






38. In medical imaging - each pixel value corresponds to a 3-D volume of tissue known as what?






39. What are the two ways detectors acquire information?






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






41. A low contrast image has a ___ frequency.






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






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






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






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






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






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






48. A high contrast image has a ___ frequency.






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






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