加算
減算
乗算
除算
maxWidthHeight:
:
linearGamma:
inverse :
ratio1:
:
ratio2:
:
ratio:
:
shift X:
:
shift Y:
:
grad slant X:
:
grad slant Y:
:
grad intercept X:
:
grad intercept Y:
:
src1Canvas
src2Canvas
dstCanvas
Drop image files(png,jpg,gif) into red & green box