1. An image processor, comprising: object image generating means for generating an object image of an object that is associated with a predetermined event, image combining means for superimposing said object image on top of a mirrored video image feature that includes an image of an operator as a portion thereof to generate a combined imageto provide production of the combined image on a predetermined display device, and detection means for detecting a position of a predetermined portion of the operator and a size of the predetermined portion in the image of said operator included in said mirrored video image feature to select an area of the predetermined portion based on the position of the predetermined portion detected; said image combining means being adapted to combine said object image and said mirrored video image feature in such a manner that said object image is displayed in a position suitable to the area of said predetermined portion of said operator selected by said detection means and a size of the object image is suitable to the size of said predetermined portion.