Patents by Inventor Shunichi Tamai

Shunichi Tamai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8131050
    Abstract: The continuous image capturing of a subject is performed with small doses of radiation. A plurality of auxiliary images obtained by the continuous image capturing is stored. On the basis of the stored auxiliary images, the periodicity of motion of the subject is detected. A pseudo image is generated from the auxiliary images exhibiting the detected periodicity. The generated pseudo image is analyzed. On the basis of the analysis result, an image capturing parameter used for the main image capturing of a still image of the subject is calculated. Using the calculated image capturing parameter, the main image capturing of the still image of the subject is performed.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: March 6, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shunichi Tamai, Takashi Yoshida
  • Publication number: 20090123051
    Abstract: The continuous image capturing of a subject is performed with small doses of radiation. A plurality of auxiliary images obtained by the continuous image capturing is stored. On the basis of the stored auxiliary images, the periodicity of motion of the subject is detected. A pseudo image is generated from the auxiliary images exhibiting the detected periodicity. The generated pseudo image is analyzed. On the basis of the analysis result, an image capturing parameter used for the main image capturing of a still image of the subject is calculated. Using the calculated image capturing parameter, the main image capturing of the still image of the subject is performed.
    Type: Application
    Filed: November 12, 2008
    Publication date: May 14, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shunichi Tamai, Takashi Yoshida
  • Patent number: 6400364
    Abstract: A three-dimensional image processing apparatus in which a three-dimensionally shaped model, a viewpoint (a camera) and a screen are set in a virtual the apparatus detects a two-dimensional position of a viewpoint of an operator and moves the screen according to the detected viewpoint position to map the three-dimensional shape of the model over the screen as viewed from the detected viewpoint position.
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: June 4, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirokazu Akisada, Shunichi Tamai
  • Patent number: 6130672
    Abstract: In a viewpoint detector instructions for a virtual 3-dimensional space are processed by an image processor. A virtual 3-dimensional spatial image is displayed in a field of view, and a viewpoint position of an operator in the field of view is detected. The 3-dimensional spatial image is displayed, and an image process for changing the image in accordance with the detected viewpoint position and an observation time is executed.
    Type: Grant
    Filed: April 22, 1997
    Date of Patent: October 10, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shoichi Yamazaki, Shunichi Tamai, Hirokazu Akisada
  • Patent number: 5949556
    Abstract: An image processing apparatus converts color image data into hue, saturation and luminosity data. When a specific color portion and a range are designated in the hue data, processing for reducing tones is executed based on the designated data. Thereafter, a reverse-conversion into color image data is performed, thereby making it possible to output a high-quality image of an illustration. Further, a histogram of designated hue data is generated, processing for reducing tones is executed based on the histogram, and the data is subsequently reverse-converted into color image data. This makes it possible to output a higher quality image of an illustration.
    Type: Grant
    Filed: October 6, 1994
    Date of Patent: September 7, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shunichi Tamai
  • Patent number: 4953227
    Abstract: As image processing method suitable for creative image generation in which the image data of an original image are divided into plural areas each consisting of plural pixels, the shape of these areas is modified according to the image data of the original image, and the pixel data in each area are processed in accordance with a representative value of the image data.
    Type: Grant
    Filed: January 28, 1987
    Date of Patent: August 28, 1990
    Assignee: Canon Kabushiki Kaisha
    Inventors: Makoto Katsuma, Hiroyuki Kimura, Kazunori Urushihara, Susumu Matsumura, Hiroshi Ohmura, Shunichi Tamai, Hideki Tanaka