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






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






3. Computer equipment is called what?






4. A high contrast image has a ___ frequency.






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






6. What is the name for a binary digit?






7. What is high-pass filtering also called?






8. A high S/N indicates ___ noise in the image.






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






10. What is high-pass filtering also called?






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






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






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






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






15. Resolution is controlled by what?






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






17. Noise is ____ related to contrast.






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






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






20. What is the process used in low-pass filtering that is accomplished by averaging adjacent pixels values?






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






22. Computer programs are called what?






23. Computerized digital images are described in terms of what






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






25. 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?






26. A larger matrix provides ____ pixels.






27. 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?






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






29. 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.






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






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






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






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






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






35. Which type of information consists of collected facts?






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






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






38. 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.






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






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






41. Increased noise = _____ image contrast.






42. 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?






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






44. Fluoroscopic noise mostly comes from what?






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






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






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






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






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






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