1. An image generating apparatus, comprising: a single real camera which captures camera image data projected onto a single real imaging plane and ranging from a close view to a distant view; and an image processing controller which sets a single virtual camera at a position higher than the single real camera, which sets, on an optical axis of the single real camera, a virtual stereoscopic projection plane, as a virtual projection plane from the single virtual camera, formed in a stereoscopic screen including a close view screen set on ground and a distant view screen being connected to a side of the close view screen far from the single real camera and set to have a predetermined upward tilt angle, an optical axis of the single virtual camera being disposed to be directed to the virtual stereoscopic projection plane, which sets a virtual stereoscopic imaging plane, as a virtual imaging plane of the single virtual camera, including a close view imaging plane parallel to the close view screen and a distant view imaging plane connected to a side of the close view imaging plane near from the single real camera and set to have a predetermined downward tilt angle, which performs a coordinate transformation between a position of each picture element of the single camera image data captured by the single real camera and a position of each picture element on the virtual imaging plane of the single virtual camera through the virtual stereoscopic projection plane, which transfers the each picture element of the camera image data onto the virtual stereoscopic imaging plane of the single virtual camera according to the coordinate transformation, and which generates, from the single camera image data captured by the single real camera, monitor image data for obtaining a monitor image, the monitor image being as an image to be projected on the virtual stereoscopic imaging plane when the virtual stereoscopic projection plane is viewed from the single virtual camera; and a monitor which displays a synthesis image in which a downward image of the close view and a perspective image of an intermediate view to the distant view projected by the monitor image data generated from the single camera image data captured by the single real camera by the image processing controller are seamlessly connected to be synthesized to have continuity in the synthesis image.