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. What does a 1 in binary code stand for?






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






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






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






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






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






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






9. What is required for collection of input information?






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






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






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






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






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






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






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






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






18. What modalities are array processors useful for?






19. What is the name for a binary digit?






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






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






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






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






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






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






26. What type of scanning increases resolution slightly by scanning all 525 lines in order?






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






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






29. Window width and contrast have an ____ relationship.






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






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






32. Noise is measured as what?






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






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






35. Which type of information consists of operating instructions?






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






37. Computers operate from ____ ____ language.






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






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






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






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






42. What are devices that process information?






43. Which type of information consists of collected facts?






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






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






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






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






48. 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?






49. What are the two ways detectors acquire information?






50. Increased noise = _____ image contrast.