In a client, a photo frame for which guidelines have been set at predetermined positions based on an operator's setting operation is provided as a trimming frame TF with guidelines. While the trimming frame TF with guidelines is displayed on a processing object image in an overlapping manner, the trimming frame TF with guidelines is shifted and displayed on the processing object image based on the operator's shifting operation as well as the trimming frame TF with guidelines is enlarged or contracted and displayed so as to become a similar form based on the operator's enlarging or contracting operation. The operator can thus shift and enlarge or contract the trimming frame TF with guidelines so that the guidelines set by him/herself and a target contained in the processing object image have a desirable positional relationship.