数字图像的形式 维函数或矩阵f(xy pixel row x, y, f(x, y) are discrete and finite mage size=max(xⅩ max(y)-e.g.640×480 Pixel intensity value f(x,y) ∈0,2557 column 26数字图像的形式 • 二维函数或矩阵f(x,y) • x, y, f(x,y) are discrete and finite • Image size = max(x) x max(y) -- e.g. 640x480 • Pixel intensity value f(x,y) ∈ [0, 255] 26