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






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






3. What is the name for a binary digit?






4. What are the two ways detectors acquire information?






5. Noise is ____ related to contrast.






6. Computer programs are called what?






7. Which type of information consists of collected facts?






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






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






10. Resolution is controlled by what?






11. Which type of information consists of operating instructions?






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






13. What is the name for a binary digit?






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






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






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






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






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






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






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






21. Electrical connections between the CPU and the other components rung along a system of series or parallel conductors called what?






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






23. Computer equipment is called what?






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






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






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






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






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






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






30. What directs information to and from various parts of the computer?






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






32. What is the 'read-only' memory that contains basic operating instructions that are almost never changing?






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






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






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






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






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






38. When was ENIAC invented?






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






40. Fluoroscopic noise mostly comes from what?






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






42. A low contrast image has a ___ frequency.






43. Which type of information consists of operating instructions?






44. Extremely narrow window width requires the computer to ignore a ___ ____ of data outside the chosen range.






45. What are devices that process information?






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






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






48. What does DICOM stand for?






49. What is required for collection of input information?






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