MIDTERM EXAMINATION

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ICST230: Multimedia Systems

MIDTERM EXAMINATION Instructions:  Use only black or blue pen.  Write your answer on the answer sheet given.  Wrong spelling is wrong.  Avoid erasures. Erasures will invalidate your answer. GOODLUCK!!! I. Identification. Write your answer on the answer sheet given.

1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18.

_____________. _____________. _____________. _____________. _____________. The early camera that first became a phenomenon in 1558. A visual representation of something you see in real life. Digital images are called ____. ______are composed of mathematical formulas that represent images. _______ are called bitmapped graphics. ___________ is a technique to minimize the jagged edges of a bitmapped image for smoother appearance. Specifying which font to be substitution is called ________. __________ resolution often associated with an image’s degree of detail or quality. __________ describe the number of bits used to represent the color of a single pixel. In bitonal image, binary 1 represents ___________ color. A color depth of 16 bits produces __________ number of colors. Thresholding is an example of ____________ image processing operation. _______________ means mapping a rectangular selection to an arbitrary four-sided polygon which is an example of geometric transformation. 19. ____________ is an image file format that is considered as a lossy compression technique that supports a maximum of 16.7 million colors. 20. ____________ is an image file format that can have transparent portion and can use all color depths. II. Multiple Choice. Write the letter that corresponds to your answer. 21. In Photography, SLR means: a. Sensor Lens Reflex b. Single Lens Reflex c. Shutter Lens Reflect d. Sensor Light Reflex

22. Imaginary lines are drawn dividing the image into thirds both horizontally and vertically. It is one of the most popular rules in photography. a. Rule of Lines b. Rule of Thirds c. Rule of Shapes d. Golden Mean 23. ________is a measurement of a digital camera's imaging sensor's sensitivity. a. Shutter speed b. Aperture c. ISO d. Exposure 24. A measurement term describing how long a camera allows light to pass through as a photograph is taken. a. Shutter speed b. Aperture c. ISO d. Exposure 25. ___________ contains several shades of gray. a. Colour image b. Bitonal image c. Grayscale image d. Binary image 26. In Photoshop, to create a selection with a uniform shape, hold ____________ key. a. CTRL b. ALT c. SHIFT d. TAB 27. In Photoshop, __________ tool selects areas of the same color within a tolerance of a particular color. a. Magnetic Lasso b. Lasso c. Magic Wand d. Polygonal Lasso 28. In Photoshop, to move and duplicate selected image/area, use the _______________ tool with the _____ key held down to make a duplicate a. MOVE, CTRL b. MOVE, ALT c. MARQUEE, CTRL d. MARQUEE, ALT 29. In Photoshop, to deselect a selection, press _____________ key. a. CTRL D b. D c. SHIFT D d. ALT D 30. In Photoshop, ________________ tool makes freehand selections with straight line sides. a. Magnetic Lasso b. Lasso c. Magic Wand d. Polygonal Lasso 31. The recording of light rays is called _____ a. Carnography b. Autography c. Lightnography d. Photography 32. In Photoshop, _______ allows you to manipulate layers. a. Swatches palette b. History palette c. Layers palette

d. Actions palette 33. In Photoshop, you can use the _________ tool to trim, scale, and straighten an image. a. Marquee b. Clone c. Move d. Crop 34. In Photoshop, you can use the ________ to increase the saturation in a specific area of an image. a. Sponge tool b. Dodge tool c. Unsharp Mask filter d. Clone stamp tool 35. ___________ graphics are suitable for creating logos, fonts and line drawings. a. Image b. Raster c. Vector d. Picture 36. All of the following are advantages of vector graphics EXCEPT: a. Can have different textures on the drawings b. Maintain quality as the size of the graphics is increased c. Easy to edit the drawings as each object is independent of the other d. Small file size 37. ___________ is used to capture texture a. Shutter speed b. Aperture c. ISO d. Exposure 38. ________ is the graphic representation or the shape of characters. a. Font b. Style c. Typeface d. Text 39. The image is an example of __________.

a. shapes b. texture c. lines d. color

40. The image is an example of the use of ________

a. Rule of Thirds b. Golden Mean c. Golden Spiral d. Use of Lines III. True or False. Write T if the statement is correct, otherwise write F. 41. A photography may be described as underexposed when it has a loss of highlight detail, that is, when the bright parts of an image are effectively all white. 42. The higher ISO speed means higher sensitivity to light. 43. Fast shutter means lesser volume of light. 44. Rotating an image is an example of geometric transformation image processing operation. 45. If you're taking a picture of something moving and want to freeze the motion in a broad daylight, you'll need a slower shutter speed. 46. Truevision Targa is a graphic file format. 47. Selecting an area of an image in Adobe Photoshop is an example of editing image processing operation. 48. In Photoshop, a selected tool remains active until you select a different tool. 49. Color correction is an example of compositing. 50. GIF is a graphic file format that supports up to 24-bit color depth.