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The study of three-dimensional measurement from an endoscopic images with stereo matching method

In these days, an endoscope is applied to therapy as well as a diagnosis. Especially, the early gastric cancer can be treated by ether endoscopic mucosa resection (EMR) or endoscopic submucosal dissection (ESD). So a pathological information of a depth direction of mucosal tissue is important. For a precise endoscopic diagnosis of a depth direction of mucosal tissue is used by ultrasound endoscope. And optical coherence tomography (OCT) and confocal endoscope will be used in the future. However the development of an image sensor is very fast, it could measure the depths of mucosa with a conventional endoscope to some extent. We studied that a probability of three dimensional measurement with a conventional endoscope.