1.2 Multimedia Flashcards

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1
Q

Bit-map image

A

system that uses pixels to make up an image

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2
Q

Pixel

A

smallest picture element that makes up an image

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3
Q

Color depth

A

number of bits used to represent the colors in a pixel, e.g. 8 bit color depth can represent 2^8 = 256 colors

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4
Q

Bit depth

A

number of bits used to represent the smallest unit in, for example, a sound or image file - the larger the bit depth, the better the quality of the sound or color image

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5
Q

Image resolution

A

number of pixels that make up an image, for example, an image could contain 4096 × 3192 pixels (12738656 pixels in total)

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6
Q

Screen resolution

A

number of horizontal and vertical pixels that make up a screen display

if the screen resolution is smaller than the image resolution, the whole image cannot be shown on the screen, or the original image will become lower quality

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7
Q

Resolution

A

number of pixels per column and per row on a monitor or television screen

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8
Q

Pixel density

A

number of pixels per square centimetre

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9
Q

Vector graphics

A

images that use 2D points to describe lines and curves and their properties that are grouped to form geometric shapes

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10
Q

Sampling resolution

A

number of bits used to represent sound amplitude (also known as bit depth)

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11
Q

Sampling rate

A

number of sound samples taken per second

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12
Q

Frame rate

A

number of video frames that make up a video per second

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