October 2015
Beginner
551 pages
17h 46m
English
Content preview from A Computational Introduction to Digital Image Processing, 2nd Edition
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16 A Computational Introduction to Digital Image Processing, Second Edition
A grayscale image of the same size requires:
512 ×512 × 1 = 262,144 bytes
= 262.14 Kb
≈ 0.262 Mb.
If we now turn our attention to color images, each pixel is associated with 3 bytes of color
information. A 512 × 512 image thu s requires
521 ×512 × 3 = 786,432 bytes
= 786.43 Kb
≈ 0.786 Mb.
Many images are of course larger than this; satellite images may be of the order of several
thousand pixels in each direction.
1.10 Image Perception
Much of image processing is concerned with making an image appear “better” to human
beings. We should therefore be aware of the limitations of the
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