Lua + Image

I usually works with images, and have to write many code even only for a simple testing. Now I try to implement toolkits with Lua, hope that I can do more things by the help of script. With the script below:

function Main()

    local img0 = Urd.CImage32F();
    local img1 = Urd.CImage32F();

    img0:Load("D:/img/NTU/106009.JPG", Urd.ChannelL);


    CImageProcessor.GaussianSmooth(img1, img0, 7, 7, 2.0, 2.0);
    CImageProcessor.OperateImgNImg(img1, img0, img1, Urd.OperatorSub);
    CImageProcessor.OperateImgNScalar(img1, img1, 10.0, Urd.OperatorMul);

    img1:Save("D:/img/ttt.jpg", Urd.ChannelL);

end

I got this result :


They are "C like" since I implement them in C with the same function and class name. Hope this will become useful in a few days.