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






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






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






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






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






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






7. What are the two most common output devices?






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






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






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






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






12. What can memory be transferred as?






13. Window width and contrast have an ____ relationship.






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






15. What is required for collection of input information?






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






17. Computer programs are called what?






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






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






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






21. What determines resolution?






22. 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.






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. When was ENIAC invented?






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






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






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






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






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






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






31. Which type of information consists of operating instructions?






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






33. Which type of information consists of collected facts?






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






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






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






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






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






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






40. What is the raw data to which a Fourier Transformation is applied to create the digital image?






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






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






43. Computers operate from ____ ____ language.






44. Computer memory is often rated in terms of total ____ memory.






45. Commercial units scan only 262.5 lines out of 525 in each pass thus producing ____ for diagnostic imaging.






46. Noise is measured as what?






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






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






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






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