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    Hi Ron:
    I have a question on your 2nd edition book page 98 of chapter4 where talking about “Add” basic image manipuation.
    Does the (O = I x 0.2) could be (O = 1+0.2) while we talking the add function?
    If not, it must be some where that I mis-understanding…



    Congratulations Jimmy! You are officially the first person to find a typo in the book. Kind of a bad one too… I knew I shouldn’t have let them do such a big print run.

    But yes, you are correct, that should be (O = 1 + 0.2) – at least we know you’re paying attention!

    And the next time I get to Taiwan I’ll have to come hand-correct your copy for you 🙂

    Okay, the gauntlet is thrown down – anybody else found mistakes? I seriously doubt that there’s only one!



    Winnie Wang

    @ronbrinkmann 27035 wrote:

    But yes, you are correct, that should be (O = 1 + 0.2) – at least we know you’re paying attention!


    Hi, great book I really took to it, read the whole thing. So I’m trying to fully grasp the basic image manipulation and am happy to have written the correction with my red pen in the book.

    However, shouldn’t it be (O= I + 0.2) ?

    This using the conventions setup on page 95:

    I= Input Image
    O= Output Image



    Jeez, I’m making typos when I’m correcting my typos! You’re totally right. And I’m not even going to try and re-write it, because I’ll probably mess it up again 🙂


    Ok Ron,

    seen as though you asked :p

    The bottom of page 94 in the term 1 reference paragraph you write.

    ‘a fixed value is added to ever pixel in an image.’

    I am pretty sure it was supposed to be ‘every’ ?

    Anyways! I did not sign up to point out spelling mistakes, I actually wanted to ask a question about chapter three so I shall post it there, hopefully you can answer it for me.




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