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 the two most common output devices?






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






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






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 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?






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






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






8. What can memory be transferred as?






9. Around what time did digital computerization come out for CT and US?






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






11. What is required for collection of input information?






12. When power is turned off - (ROM / RAM) is erased and (ROM / RAM) is maintained






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






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






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






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






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






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






19. Which type of information consists of collected facts?






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






21. The human visual range is ___ or fewer shades of gray.






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






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






24. 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.






25. Increased noise = _____ image contrast.






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






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






28. Which type of information consists of operating instructions?






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






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






31. Who or What is responsible for density changes on a digital image? On a manual image






32. What are the two most common output devices?






33. What are the two ways detectors acquire information?






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






35. What modalities are array processors useful for?






36. ____ circuits permit simultaneous transmission of information while ____ circuits transmit sequentially.






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






38. Which type of information consists of operating instructions?






39. Computers operate from ____ ____ language.






40. What is the random background information that does not contribute to the image quality?






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






42. 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.






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






44. Each pixel is capable of representing a wide range of what?






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






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






47. What 3 things were required prior to digital computer applications in medical imaging?






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






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






50. When power is turned off - (ROM / RAM) is erased and (ROM / RAM) is maintained