1. A video processing apparatus comprising: an image capturing apparatus and a processing apparatus connected to the image capturing apparatus, wherein the image capturing apparatus comprises: an image obtaining unit that obtains a frame image; a frame image transmitting unit that transmits the frame image to the processing apparatus; a transformation parameter setting unit that sets transformation parameters received from the processing apparatus in the image capturing apparatus; an image transforming unit that applies an image transformation to the frame image using the transformation parameters thus set; and a transformed frame image transmitting unit that transmits a transformed frame image to the processing apparatus, and the processing apparatus comprises: a transformation parameter calculating unit that calculates the transformation parameters for the image transformation, using the frame image received from the image capturing apparatus; and a transformation parameter transmitting unit that transmits the transformation parameters to the image capturing apparatus.