Patent ID: 6181384
Filing Date: 2001-01-30
Classification: G06T,H04N

Abstract:
An image converting apparatus for converting an input image represented by an input video signal into an output video signal representing an image with a metallic luster, comprising:means for supplying designated parameters representing the metallic luster and corresponding to the input image;a pre-modifying circuit supplied with a luminous signal component of the input video signal for adjusting the amplitude of the luminous signal component;a color correction circuit supplied with the amplitude adjusted luminous signal component and the designated parameters for generating color corrected signals representative of a metallic luster, the color correction circuit including a look-up table with which calculations are performed;mixing circuits for mixing the color corrected signals output from the color correction circuit with the input video signal according to a mix ratio to produce the output video signal representing an image with a metallic luster; andwherein the mixing circuits produce primary color output signals representing the input image with a metallic luster according to the formulae:R.sub.OUT =(r-R.sub.0)K+R.sub.0,G.sub.OUT =(g-G.sub.0)K+G.sub.0,B.sub.OUT =(b-B.sub.0)K+B.sub.0,where R.sub.OUT, G.sub.OUT, B.sub.OUT are the primary color output signals representing the input image with a metallic luster,r, g, b are the color corrected signals output from the color correction circuit,R.sub.0, G.sub.0, B.sub.0 are primary color signals of the input video signal, andK is a mix ratio.