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. Computerized digital images are described in terms of what






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






3. Noise is measured as what?






4. What is high-pass filtering also called?






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






6. Increased noise = _____ image contrast.






7. Window width and contrast have an ____ relationship.






8. 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.






9. What is required for collection of input information?






10. Which type of information consists of collected facts?






11. Which type of information consists of collected facts?






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






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






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






15. What changes the pixel value by addition or subtraction and controls image density?






16. Increased noise = _____ image contrast.






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






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






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






20. Fluoroscopic noise mostly comes from what?






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






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






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






24. What are the two most common output devices?






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






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






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






28. 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?






29. Extremely wide window width requires the computer to ignore ___ contrast differences in order to display the entire range of data.






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






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






32. A low contrast image has a ___ frequency.






33. What does DICOM stand for?






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






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






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






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






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






39. Medical imaging is often achieved from information that has been processed by what?






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






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






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






43. If the window level increases - density will _____.






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






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






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






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






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






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






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