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  1. #1
    Registered User
    Join Date
    Apr 2007
    Posts
    2

    Comparing pixel color and getRGB's returned array

    I'm beginning to work with with the graphics class and at the moment I'm trying to devise how to find a black vertical line in an image (it's the full height of the image). Since I don't see any methods for outright checking a specific pixel's color, I'm working under the assumption that I need to extract the RGB from an image, then compare the red within a certain threshold to decide I have black. However, since getRGB returns a one dimensional array do I need to use modulus or such to determine where each new row in my image is within the array?

    edit: sorry, changed the title since the old one didn't make much sense
    Last edited by nurru; 2007-05-06 at 20:15.

  2. #2
    Super Contributor
    Join Date
    Mar 2003
    Location
    Israel
    Posts
    2,280

    Re: Comparing pixel color and get___Component()

    You need integer division by the width of the image to get the y coordinate and modulus by the width to get the x coordinate.

    shmoove

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