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 high contrast image has a ___ frequency.






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






3. What is an individual matrix box or picture element?






4. 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?






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






6. What are the two ways detectors acquire information?






7. In medical imaging - each pixel value corresponds to a 3-D volume of tissue known as what?






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






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






10. 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?






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






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






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






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






15. A larger matrix provides ____ pixels.






16. What is critical to how fast the computer system can function?






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






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






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






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






21. What is an individual matrix box or picture element?






22. When was ENIAC invented?






23. A low contrast image has a ___ frequency.






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






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






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






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






28. Computerized digital images are described in terms of what






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






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






31. What is the name for a binary digit?






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






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






34. Computers operate from ____ ____ language.






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






36. 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?






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






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






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






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






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






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






43. What is critical to how fast the computer system can function?






44. Noise is measured as what?






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






46. Computers operate from ____ ____ language.






47. It is important that the radiographer understand anatomy from different perspectives due to the methods of digital processing and image information? What are the 3 perspectives?






48. What are devices that process information?






49. Computer programs are called what?






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







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Can you answer 50 questions in 15 minutes?


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