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 frequency response of the incoming signal called?






2. 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.






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






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






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






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






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






8. A low contrast image has a ___ frequency.






9. What determines resolution?






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






11. Window width and contrast have an ____ relationship.






12. What is the 'heart' of every computer?






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






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






15. Fluoroscopic noise mostly comes from what?






16. Computerized digital images are described in terms of what






17. 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?






18. What is the 'heart' of every computer?






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






20. Computer programs are called what?






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






22. 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.






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






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






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






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






27. What is the name for an 8-bit word?






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






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






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






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






32. Which type of information consists of operating instructions?






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






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






35. Fluoroscopic noise mostly comes from what?






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






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






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






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






40. 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?






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






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






43. What directs information to and from various parts of the computer?






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






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






46. What is the measure of the differences between the data values referred to as?






47. What are the two ways detectors acquire information?






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






49. What are devices that process information?






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