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






2. What does a 0 in binary code stand for?






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






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






5. 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.






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






7. When was ENIAC invented?






8. A larger matrix provides ____ pixels.






9. Computer equipment is called what?






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






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






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






13. Noise is ____ related to contrast.






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






15. What can memory be transferred as?






16. A low contrast image has a ___ frequency.






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






18. Computerized digital images are described in terms of what






19. 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?






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






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






22. 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?






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






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






25. When was ENIAC invented?






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






27. What type of scanning increases resolution but can't be used in real-time dynamic studies?






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






29. Which type of filter amplifies or deletes all but a selected range or band of frequencies and is useful in the elimination of characteristic emission peaks?






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






31. 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?






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






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






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






35. What is high-pass filtering also called?






36. What is required for collection of input information?






37. What determines resolution?






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






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






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






41. What is an image that has been converted into numerical values for transmission or processing?






42. A high contrast image has a ___ frequency.






43. 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?






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






45. A __ _____ disk will store over 10000000 bytes of information.






46. Window width and contrast have an ____ relationship.






47. What does DICOM stand for?






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






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






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







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