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  1. #1
    Track13 is offline Member
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    Default Need help w/ question based on Copying Pixels

    A Picture has H rows of Pixels, W columns of Pixels, and W is an even number, like W is 2N. Here, N is the whole number that is exactly 1/2 of W. How many pixels are copied when the Picture is mirrored along the vertical line through its middle?

    I know the equation is (Width * Height) / 2
    I wrote a program to keep count of all the pixels.
    I tested different pictures to see if I would get the same answer but, I didn't.
    Clearly each picture has different number of pixels.
    Am I on the right track with the question?

  2. #2
    JosAH's Avatar
    JosAH is offline Moderator
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    Default Re: Need help w/ question based on Copying Pixels

    All the pixels in the image are copied; try it with a minimal image: 1 row by 2 columns; both pixels are swapped.

    kind regards,

    Jos
    cenosillicaphobia: the fear for an empty beer glass

  3. #3
    Track13 is offline Member
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    Default Re: Need help w/ question based on Copying Pixels

    So I should add another loop to through the columns again?

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    JosAH's Avatar
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    Default Re: Need help w/ question based on Copying Pixels

    Quote Originally Posted by Track13 View Post
    So I should add another loop to through the columns again?
    Why?

    kind regards,

    Jos
    cenosillicaphobia: the fear for an empty beer glass

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