1. An image processing device comprising: a control unit configured to acquire procedure data for a set of procedures of operation to be performed in a real space, the procedure data defining a correspondence between a direction for each procedure and position information designating a position at which the direction is to be displayed; and a superimposing unit configured to generate an output image by superimposing the direction for each procedure included in the set of procedures at a position in the input image determined based on an environment information representing a position of one or more physical objects present in the real space and the position information, using the procedure data acquired by the control unit, wherein the procedure data defines a further correspondence between the direction for each procedure and a condition for progressing displaying of each direction, and wherein the control unit and the superimposing unit are each implemented via at least one processor.