Masashi Hirota
Olympus Corporation
31 Papers
363 Citations
Masashi Hirota is an academic researcher from Olympus Corporation. The author has contributed to research in topics: Image processing & Pixel. The author has an hindex of 7, co-authored 31 publications.
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Papers
Patent
Image processing apparatus, image processing method, and computer-readable recording medium
Makoto Kitamura,Yamato Kanda,Takehiro Matsuda,Takashi Kono,Masashi Hirota +4 more
- 23 Aug 2011
TL;DR: In this article, an apparatus includes a calculating unit that calculates gradient strength of respective pixel values based on an intraluminal image, an extracting unit that extracts a closed region from the image, and a detecting unit that detects an abnormal portion of the closed region.
91
Patent
Image processing apparatus and method
Takashi Kono,Yamato Kanda,Makoto Kitamura,Takehiro Matsuda,Masashi Hirota +4 more
- 23 Nov 2011
TL;DR: In this article, a closed region creating unit was proposed to detect an abnormal part from the inside of the closed region, where the gradient strength is equal to or higher than a predetermined value.
74
Patent
Image processing apparatus, image processing method, and computer-readable recording device
Takashi Kono,Yamato Kanda,Makoto Kitamura,Masashi Hirota +3 more
- 28 May 2014
TL;DR: In this article, a residue candidate distribution determination unit is configured to determine, from among the color feature data, color feature distributions on a side comparatively strong in redness to be a mucosa distribution, and a residue distribution determination mechanism is configured for determining residue candidate distributions with reference to the residue distribution.
61
Patent
Image processing device, image processing method, and computer-readable recording device
Yamato Kanda,Makoto Kitamura,Takehiro Matsuda,Takashi Kono,Masashi Hirota +4 more
- 30 Aug 2012
TL;DR: In this paper, an image processing device includes: a feature data calculator configured to calculate the feature data of each pixel in an image; an approximate shape calculator, which calculates a shape approximating a profile of a distribution area in which the feature space is distributed in a feature space having the feature dataset as an element; and an abnormal area detector configured to detect an abnormal region in the image based on the approximate shape and the profile of the distribution area.
34
Patent
Image processor, image processing method, and image processing program
Takashi Kono,Yamato Kanda,Makoto Kitamura,Masashi Hirota +3 more
- 10 Dec 2012
TL;DR: In this paper, an image processing apparatus or the like, which is able to accurately distinguish a residue region from an intraluminal image, is provided, which includes a residue candidate distribution determination unit 120 that determines color feature data distributed on a side comparatively strong in redness to be a mucosa distribution, from among a distribution of colour feature data of each pixel in the intralUMinal image.
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