METHOD AND DEVICE FOR DETECTING REMAINING SKIN AND BONE IN SLICED MEAT AND METHOD AND DEVICE FOR DETECTING PARASITE IN SLICED MEAT

摘要

PURPOSE:To securely and automatically detect a remaining skin and a remaining bone by irradiating a slice of meat with light which has an ultraviolet wavelength or blue visible wavelength range and investigating blue wavelength light emitted by the slice of meat. CONSTITUTION:The slice of meat 14 is supplied onto the mesh conveyor 12 of a detecting device 10, irradiated by a high-voltage mercury lamp 16, and photographed by a photographing device 18. Then the device 18 processes a color video signal inputted to a photographic element 24 by an AGC circuit and outputs a B-Y signal, an R-Y signal, and a Y signal to a video processor 26 through a color separating circuit. Consequently, the slice of meat 14 is irradiated with the light which has the ultraviolet or blue wavelength range, the remaining skin part reflects the visible blue wavelength component selectively and locally, and the remaining skin absorbs the ultraviolet wavelength light and emits a visible blue wavelength component. Then the processor 26 extracts only a color signal based upon the blue reflected light of the remaining skin part or blue wavelength light emitted by the remaining bone and outputs it as a continuous binary image to a monitor device, thereby detecting the remaining skin and remaining bone automatically.