Results 1 to 1 of 1

Math Help - How to get the third value, which the first and the second value already have

  1. #1
    Newbie
    Joined
    Feb 2013
    From
    China
    Posts
    1

    How to get the third value, which the first and the second value already have

    I try to get the third value from the problem below, which i have already know the left two value, the problem as below:

    Code:
    target size (in centimeter):
    width = 29.7cm
    height = 21cm
    target distance from camera:
    d(distance)= 60cm
    the occupied pixels in image by target:
    width = 323pixel
    height = 227pixel
    d = 120cm
    width = 158pixel
    height = 113pixel
    Question:
    Now
    1. how to caculate Real Size if distance and pixels are given?
    2. how to calculate distance if Real Size and pixel are given?
    3. how to calculate pixels if the Real Size and distance is given?

    Note: If distance is become greater, the size in pixel become smaller
    and if Real Size became greater, the size in pixel also became greater

    Thanks in advace!
    Last edited by bahramudinadil; February 24th 2013 at 06:42 AM.
    Follow Math Help Forum on Facebook and Google+


/mathhelpforum @mathhelpforum