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 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?






2. Computers operate from ____ ____ language.






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






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






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






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






7. What does DICOM stand for?






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






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






10. A larger matrix provides ____ pixels.






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






12. When was ENIAC invented?






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






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






15. 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.






16. DICOM imaging now includes compatibility via a database system that includes linage of the patient images with the patient's EMR. This database system is called what?






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






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






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






20. What are devices that process information?






21. Computers operate from ____ ____ language.






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






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






24. 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.






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






26. What does DICOM stand for?






27. Which type of information consists of operating instructions?






28. Which type of filter amplifies or deletes all but low frequencies - appears to reduce contrast - and is often used to remove high frequency nose.






29. Resolution is controlled by what?






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






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






32. What determines resolution?






33. Window width and contrast have an ____ relationship.






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






35. What is required for collection of input information?






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






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






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






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






40. A low contrast image has a ___ frequency.






41. When was ENIAC invented?






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






43. What is high-pass filtering also called?






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






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






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






47. What determines resolution?






48. Resolution is controlled by what?






49. Noise is measured as what?






50. Computer programs are called what?