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. What is required for collection of input information?






2. Noise is measured as what?






3. What is high-pass filtering also called?






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






5. 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?






6. Which type of information consists of collected facts?






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






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






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






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






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






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






13. Computer equipment is called what?






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






15. Because electrical currents are understood as being either on or off - the binary system consists of information recorded as either a _ for off or a _ for on.






16. Noise is ____ related to contrast.






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






18. Which type of information consists of operating instructions?






19. Computerized digital images are described in terms of what






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






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






22. What is the name for a binary digit?






23. Noise is measured as what?






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






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






26. The _____ the matrix size - the better the resolution.






27. Noise is ____ related to contrast.






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






29. What is required for collection of input information?






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






31. What is the random background information that does not contribute to the image quality?






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






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






34. What are the two ways detectors acquire information?






35. 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.






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






37. Computer programs are called what?






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






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






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






41. Increased noise = _____ image contrast.






42. What determines resolution?






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






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






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






46. What does DICOM stand for?






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






48. What is high-pass filtering also called?






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






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