Maurice Tutor

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  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Computer Science Posted 17 Sep 2017 My Price 9.00

size of the USB drive

Pictures on the Go

Develop and test a Python program that determines how many images can be stored on a given size USB (fl ash) drive. The size of the USB drive is to be entered by the user in gigabytes (GB). The number of images that can be stored must be calculated for GIF, JPEG, PNG, and TIFF image fi le formats. The program output should be formatted as given below.

Enter USB size (GB): 4

xxxxx images in GIF format can be stored

xxxxx images in JPEG format can be stored

xxxxx images in PNG format can be stored

xxxxx images in TIFF format can be stored

The ultimate file size of a given image depends not only on the image format used, but also on the image itself. In addition, formats such as JPEG allow the user to select the degree of compression for the image quality desired. For this program, we assume the image compression ratios given below. Also assume that all the images have a resolution of 800 x 600 pixels. Thus, for example, a 800 x 600 resolution image with 16-bit (2 bytes) color depth would have a total number of bytes of 800 x 600 x 2 = 960,000. For a compression rate of 25:1, the total number of bytes needed to store the image would be 960000/25 = 38400.Finally, assume that a GB (gigabyte) equals 1,000,000,000 bytes, as given in Figure 2.1.

width=

width=

FIGURE 2-1 Measurements of Data Size (bytes)

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Maurice Tutor
(5)
Status NEW Posted 17 Sep 2017 09:09 PM My Price 9.00

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