Abstract: A mill including large-diameter work rolls which are directly driven is disposed in an upstream stage of a hot strip finish rolling mill train, and mills including small-diameter work rolls which are driven by back-up rolls or intermediate rolls are disposed in middle and downstream stages of the hot strip finish rolling mill train, so that a strip can be rolled with strong draft and at a low speed, whereby a small-scale production of hot strips on the order of million tons annual yield can be achieved with a compact structure of equipment.

Abstract: A real-time endoscopic image processing system for removing a net pattern from an image has an image processing section (1000) which includes a first controlling circuit (400) for receiving a video signal (S2) from one of a video signal S1 output from a television camera (14) and a VTR, or the like. A horizontal sample-hold circuit (500) generates a horizontal peak sample-hold signal (S5) by continuously sampling and holding the peak value of a sinusoidal video signal voltage from the video signal output (S2) which corresponds to the bright and dark portions of an image. A second controlling circuit (600) delays the horizontal peak sample-hold signal (S5) and compares a delay signal (S5D) with the horizontal peak sample-hold signal (S5) to detect the peak value of the original voltage which varies in a sinusoidal form with respect to the vertical scanning direction, and outputting a vertical peak sampling controlling signal (S6).