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 __ _____ disk will store over 10000000 bytes of information.






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






3. A larger matrix provides ____ pixels.






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






5. What are the two ways detectors acquire information?






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






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






8. What are devices that process information?






9. 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?






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






11. What is the process used in low-pass filtering that is accomplished by averaging adjacent pixels values?






12. What is a specialized computer that functions as a peripheral and uses CPU memory to perform mathematical operations at extremely high speed?






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






14. Noise is ____ related to contrast.






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






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






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






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






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






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






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






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






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






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






25. Resolution is controlled by what?






26. A larger matrix provides ____ pixels.






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






28. Fluoroscopic noise mostly comes from what?






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






30. 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?






31. Which type of information consists of operating instructions?






32. 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?






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






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






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






36. Which type of filter amplifies or deletes all but low frequencies - appears to reduce contrast - and is often used to remove high frequency nose.






37. 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.






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






39. 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?






40. Which type of information consists of collected facts?






41. What was the earliest computer device called?






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






43. Which memory replaces new information with the old; can change?






44. Which memory replaces new information with the old; can change?






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






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






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






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






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






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