Bitmap/Raster Graphics: Color Depth & Resolution

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Questions and Answers

Which characteristic defines bitmap or raster graphics?

  • Automatic adjustment to different color spaces.
  • A rectangular grid of pixels where each pixel's color is defined by bits. (correct)
  • Resolution independence for scaling without loss of quality.
  • Mathematical descriptions of shapes and paths.

A graphic designer is working on a project where the final image needs to be scaled significantly without losing quality. Which type of graphic format would be LEAST suitable?

  • SVG
  • AI
  • JPG (correct)
  • EPS

Which of the following file formats is commonly used for bitmap or raster graphics?

  • PNG
  • AI
  • SVG
  • EPS

A photographer wants to save a high-resolution photograph with a relatively small file size for online display. Which of the following file formats would be the MOST appropriate choice?

<p>JPG (B)</p>
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Which software is primarily designed for painting and manipulating raster graphics?

<p>MS Paint (A)</p>
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An artist needs to create a detailed digital painting with complex brushwork and subtle color variations. Which software would be the MOST suitable for this task?

<p>GIMP (D)</p>
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What are the primary factors that determine the visual quality of a raster image?

<p>Color depth and resolution (C)</p>
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If a digital artist wants to increase the detail and clarity of their existing raster image, which adjustments would MOST directly contribute to this goal?

<p>Increasing the resolution and color depth (B)</p>
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What does 'color depth' primarily define in the context of raster graphics?

<p>The range of colors available for each pixel (B)</p>
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A designer is preparing an image for print and needs the MOST accurate color representation possible. Which color depth would be the MOST suitable?

<p>24-bit color (C)</p>
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In the context of digital imaging, what does 'resolution' refer to?

<p>The number of pixels in an image (C)</p>
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A photographer is printing a large-format image and notices that the print appears blurry and pixelated. Which adjustment should the photographer make to improve the print quality?

<p>Increase the image resolution (A)</p>
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What would be the MOST likely outcome of significantly increasing the resolution of a small raster image?

<p>The image will appear pixelated. (A)</p>
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If a pixel in a raster graphic has RGB values of R=93%, G=93%, and B=93%, what color would that pixel be closest to?

<p>Gray (B)</p>
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In a specific raster image, a certain pixel has RGB values of R=218, G=150, and B=149. Which color is MOST prominent in this pixel?

<p>Red (C)</p>
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What is the decimal equivalent of the binary number 10010110?

<p>150 (A)</p>
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Convert the decimal number 218 to its binary representation.

<p><code>11011010</code> (D)</p>
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If the binary representation of the Green component in an RGB pixel is 10010110, and the binary representation of the Blue component is 10010101, what is the difference between the decimal values of the Green and Blue components?

<p>1 (A)</p>
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Which of the following scenarios would MOST benefit from using vector graphics instead of raster graphics?

<p>Creating a company logo that needs to be scaled to various sizes without losing quality. (C)</p>
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A web developer needs to choose the appropriate image format for a website logo that requires a transparent background. Which of the following raster image formats would BEST support transparency?

<p>GIF (B)</p>
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Flashcards

Bitmap/Raster Graphics

A rectangular grid of pixels, with each pixel's color specified by a number of bits.

Common Bitmap File Formats

JPG, BMP, PNG, GIF.

Painting Software

Common painting software includes MS Paint, Adobe Photoshop, and GIMP.

Factors Determining Image Quality

Color Depth and Resolution.

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Color Depth

The number of bits used to indicate the color of a single pixel, determining the range of colors.

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Study Notes

  • Bitmap/Raster Graphics are a rectangular grid of pixels
  • Each pixel's color is specified by a number of bits
  • Common file formats for bitmap/raster graphics include JPG, BMP, PNG, and GIF
  • Painting software that can be used for bitmap/raster graphics: MS Paint, Adobe Photoshop, GIMP
  • Factors determining image quality of bitmap/raster graphics include color depth and resolution

Color values for a pixel

  • R 93%, G 93%, B 93%
  • R 90%, G 90%, B 0%
  • RGB(218, 150, 149)
  • R = 11011010
  • G = 10010110
  • B = 10010101

Color Depth

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