A chroma adjusting method for use in an automatic white balance adjusting method to control the gains of red and blue signals in accordance with signals obtained by photographing an object. In the chroma adjusting method, the chroma information that corresponds to the ratio of high-chroma colors in the...http://www.google.com/patents/US5010393?utm_source=gb-gplus-sharePatent US5010393 - Method and apparatus for adjusting chroma