Method and apparatus for the transmission of colour pictures by the facsimile technique

Abstract

Abstract In this method the colour original is scanned trichromatically via colour filters by means of an opto-electrical scanner and chrominance signal values R, G and B are obtained. From the chrominance signals R, G, B, a luminance signal is formed by means of the formula Y = a1R+a2G+a3B and two colour difference signals R-Y and B-Y are formed, the colour difference signals R-Y and B-Y are compressed and the compressed colour difference signals R-Y, B-Y and the luminance signal are transmitted multiplexed in time in such a manner that the colour difference signals are transmitted within the dead time of the scanner. At the receiving location, the colour image is recorded again after decompression and multiplexing. <IMAGE>

Inventors

• 👤 Gerd Dr. Brand
• 👤 Hubert Dr. Niemeier

Bibliographic Details