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 larger matrix provides ____ pixels.






2. A low contrast image has a ___ frequency.






3. What are devices that process information?






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






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






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






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






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






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






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






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






12. What 3 things were required prior to digital computer applications in medical imaging?






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






14. Which computers handle data composed of continuously varying electrical currents?






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






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






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






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






19. Resolution is controlled by what?






20. When power is turned off - (ROM / RAM) is erased and (ROM / RAM) is maintained






21. 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.






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






23. 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?






24. 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?






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






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






27. 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?






28. Noise is measured as what?






29. Which type of information consists of collected facts?






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






31. 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?






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






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






34. Increased noise = _____ image contrast.






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






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






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






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






39. Computer equipment is called what?






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






41. What are the two ways detectors acquire information?






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






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






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






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






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






47. What is the name of the 'modern electronic computer'?






48. Resolution is controlled by what?






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






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