An image synthesizing apparatus according to the present invention comprises coefficient setting means for setting a blending coefficient α(0≦α≦1) at a specified value when a value of a specific picture element component included in picture element components A of a first image is a predetermined...http://www.google.com.hk/patents/US7373016?utm_source=gb-gplus-share專利 US7373016 - Image synthesizing apparatus and image synthesizing method
