Accurate drawing without position displacement is performed irrespective of different aspect ratios on the transmission side of drawing information and on the reception side. In a drawing apparatus 50, a normalized coordinate transformation section 62 transforms normalized coordinates (x3, y3) transmitted via a network into rear coordinates (x2, y3) in accordance with an inverse function g1−1 of a function g1 for normalizing an aspect ratio of an image displayed on a display, and a rear coordinate transformation section 63 transforms the rear coordinates (x2, y2) into front coordinates (x1, y1) in accordance with an inverse function f1−1 of a function f1 corresponding to the aspect ratio of the image. A drawing section 67 draws an image on the screen of the display in accordance with the front coordinates (x1, y1). The invention is applicable, for example, to an application sharing drawing information.