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Thread: A picture question

  1. #1 A picture question 
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    Question:

    A 1.2TB file server is used to save high quality photographic images. The average image size is 3696 X 2776 pixels with 24-bit resolution. Calculate the number of images this server could support without compression.

    could someone explain the calculations on what to do for this question, as I'm not sure how to do it thanks


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  3. #2 Re: A picture question 
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    Quote Originally Posted by shenmue232
    Question:

    A 1.2TB file server is used to save high quality photographic images. The average image size is 3696 X 2776 pixels with 24-bit resolution. Calculate the number of images this server could support without compression.

    could someone explain the calculations on what to do for this question, as I'm not sure how to do it thanks

    To calculate an image size: horizontal pixels × vertical pixels × bit depth

    So 3696 x 2776 x 24 = 246242304 bits

    Divide this by 8 for bytes, then 1024 for KB, then 1024 for MB and 1024 again for TB. This gives 0.0286 TB

    So the server size divided by average file size = 1.2TB / 0.0286TB

    = 41 images (roughly)


    Hmm, that seems a bit low.. I think that's how you work it out but I could be wrong


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  4. #3  
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    yeah i think that it may be more than 41 images i worked out that each image would be 29.35 mega Bytes, the bit i cant work out is dividing the size of the image by 1.2TB
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  5. #4  
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    Divide this by 8 for bytes, then 1024 for KB, then 1024 for MB and 1024 again for TB. This gives 0.0286 TB
    Shouldn't there be a giga in there somewhere?
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  6. #5  
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    yeah there should be:

    3696 X 2776 X 24 /1024 for KB /1024 for MB/1024 for GB /1024 for TB =


    0.000223956070840358734130859375
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  7. #6  
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    Oh yeah, that's why it was so low!
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  8. #7  
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    so how do we do the next part dividing the image size by 1.2TB
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  9. #8  
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    1.2 TB= 1,319,413,950,000 Bytes

    Each image is (3696 x 2776 x 24) / 8 = 30,780,288 Bytes
    1,319,413,950,000 / 30,780,288 = 42865.5492 images
    Is that right?
    Fixin' shit that ain't broke.
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  10. #9  
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    Image is 3696 * 2776 * 24
    Divide by 8
    That's 30MB.
    1.2TB is 1.2 * 1024 * 1024 MB = 1258291.2MB
    1258291.2/30 = 41943 pictures.
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  11. #10 lolz... :lol: :lol: 
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    well i guess it was your assignment... and you got confused..
    do it your self i think .. :P :P
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  12. #11  
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    was a question from a practice exam paper
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