Recognition of 4D hyperobjects involves finding bended regions of a hypersurface which specify the 4D hyperobject geometrically. A visualization method is proposed to present the observer with the regions, which are displayed in a 2D projection of the 4D hyperobject as brightness determined by differential of the hypersurface normal vector. This method can visualize both kinds of hyperobjects: ones with faces like 4D polytopes and ones without faces like a 4D hypersphere. A software that renders 4D hyperobjects in real-time using the method is released.

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