Applications of the Color Conversion System Using the LUT and Interpolation to the Real-Time Color Recognition

This paper presents applications of the c o l o r conversion system using the LUT(Look U p Table) and interpolation to the real-time color recognition. This system can discriminate between target area and non-target area by using c o l o r information in real-time(30 frames/sec). The flesh tint extraction have been performed by this system as example showing its ability. I . Introduction In the field of image processing, there a r e many k i n d s of method t o recognize a o b j e c t such as edge detection, c l a s t e r i n g in specified space and so on.' In case of using color information to recognize a o b j e c t , these processes are corresponding with converting a color signal into the color which signs the specified segment. We have developed t h e "color conversion system" for color correction. adjustment and so7" . It can deal w i t h full celor irnage(24bit) in NTSC video rate(30 frame/sec). In this paper, this system i s applied t o t h e flesh tint extractian. 2. Color conversion system using the LUT and interpolation The color conversion system using a LUT and interpolation is illustrated in F i g . 1 . The LUT stores only 7 2 9 { 9 X g X 9 ) output: data at coarse lattice points corresponding to an input RGB color space, uniformly. The interpolated output signal Oi between lattice points is calculated by interpolating with neighbors in sub-divided space, ". " "