Endoscope system

An endoscope system comprising:

• a first endoscope including a first image pickup section capable of picking up an image of a subject;
• a first illuminating section capable of emitting a first illuminating light for illuminating the subject, the image of which is picked up by the first image pickup section;
• a second endoscope including a second image pickup section capable of picking up an image of the subject illuminated by the first illuminating light from a direction different from that of the first image pickup section;
• a second illuminating section capable of emitting a second illuminating light for illuminating the subject, the image of which is picked up by the second image pickup section;
• a video signal processing section for the second endoscope for generating a video signal for the second endoscope based on a signal picked up by the second image pickup section;
• a display section for the second endoscope for displaying an image of the subject obtained based on the video signal processing section for the second endoscope;
• an emphasis instructing section for instructing an emphasis on an image obtained by the first illuminating light;
• and
• a video signal generation control section for performing, on the video signal processing section for the second endoscope, control to generate the video signal by performing a processing to superimpose images of the subject for two fields which are temporally successive, and further performing a calculating to obtain a difference between the image of the subject subjected to the processing and an image of the subject for one field obtained at a timing when light not having a light intensity large enough to transmit the light through the body cavity wall is emitted after the processing, based on a cycle of pulse emission in the first illuminating light.