Patents by Inventor Kunihiko Kanai

Kunihiko Kanai 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: 10116880
    Abstract: An image stitching method for use in an image processing apparatus is provided. The method includes the steps of: receiving a first video file and a second video file from an image capturing unit, wherein the first video file includes at least one first image and a first audio track, and the second video file includes at least one second image and a second audio track; calculating delay time between a first acoustic feature of the first audio track and a second acoustic feature of the second audio track to synchronize the first image and the second image; converting the first image and the second image into a first adjusted image and a second adjusted image; and performing an image stitching process on the first adjusted image and the second adjusted image to generate a stitched image.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: October 30, 2018
    Assignees: SINTAI OPTICAL (SHENZHEN) CO., LTD., ASIA OPTICAL CO., INC.
    Inventors: Kunihiko Kanai, Takayuki Sasaki, Hiroaki Furuya, Takenori Akimoto, Gakuji Horigome
  • Publication number: 20170230587
    Abstract: An image stitching method for use in an image processing apparatus is provided. The method includes the steps of: receiving a first video file and a second video file from an image capturing unit, wherein the first video file includes at least one first image and a first audio track, and the second video file includes at least one second image and a second audio track; calculating delay time between a first acoustic feature of the first audio track and a second acoustic feature of the second audio track to synchronize the first image and the second image; converting the first image and the second image into a first adjusted image and a second adjusted image; and performing an image stitching process on the first adjusted image and the second adjusted image to generate a stitched image.
    Type: Application
    Filed: January 30, 2017
    Publication date: August 10, 2017
    Inventors: Kunihiko Kanai, Takayuki Sasaki, Hiroaki Furuya, Takenori Akimoto, Gakuji Horigome
  • Patent number: 9366945
    Abstract: An embodiment of the invention provides a float capable of mounting a camera device including an antenna to enable underwater photography with less limitation to the arrangement of the antenna. The float includes a recess 3 acting as a first camera device mounting section at a side to be immersed in water. The first camera device mounting section is provided for mounting a first camera device 101. The float has buoyancy to provide a protruding section 5 protruding upwardly from water's surface A when the float is floating on the water's surface A in a state of mounting the first camera device 101 in the recess 3. The float, including the protruding section 5, between the protruding section 5 and an antenna 104 equipped on the first camera device 101 mounted in the recess 3 is composed of a material capable of transmitting a radio wave.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: June 14, 2016
    Assignees: SINTAI OPTICAL (SHENZHEN) CO., LTD., ASIA OPTICAL CO., INC.
    Inventors: Kunihiko Kanai, Kentaro Hara
  • Publication number: 20160028997
    Abstract: An information-processing device is provided which includes a control unit, a viewing angle change processing unit, an unfold method change processing unit, a memory unit, and a re-video data generation processing unit. The control unit displays an omnidirectional image data by an unfold image, which is unfolded with one of at least two unfold methods. The viewing angle change processing unit changes the viewing-angle position of the unfold image. The unfold method change processing unit changes the unfold method of the unfold image. The memory unit stores the viewing-angle position information changed by the viewing-angle position-changing operation, the unfold-method information changed by the unfold-method changing operation, and either the video time information or information relating to a video time which has been changed. The re-video data generation processing unit generates the re-video data from the omnidirectional data based on the information stored in the memory unit.
    Type: Application
    Filed: July 24, 2015
    Publication date: January 28, 2016
    Inventors: Kunihiko Kanai, Kazunori Gomi, Hiroshi Masuda
  • Publication number: 20160026071
    Abstract: An embodiment of the invention provides a float capable of mounting a camera device including an antenna to enable underwater photography with less limitation to the arrangement of the antenna. The float includes a recess 3 acting as a first camera device mounting section at a side to be immersed in water. The first camera device mounting section is provided for mounting a first camera device 101. The float has buoyancy to provide a protruding section 5 protruding upwardly from water's surface A when the float is floating on the water's surface A in a state of mounting the first camera device 101 in the recess 3. The float, including the protruding section 5, between the protruding section 5 and an antenna 104 equipped on the first camera device 101 mounted in the recess 3 is composed of a material capable of transmitting a radio wave.
    Type: Application
    Filed: July 22, 2015
    Publication date: January 28, 2016
    Inventors: Kunihiko Kanai, Kentaro Hara
  • Publication number: 20160028957
    Abstract: An imaging device including an image mode determining unit, a reading method setting unit, and a control unit is provided. The image mode determining unit determines an image mode among a plurality of image modes corresponding to the position or angle of the imaging device. The reading range setting unit sets the reading range for the image sensor to correspond with the image mode determined by the image mode determining unit. The control unit temporarily stores pixel data in a frame buffer based on the output picture signal in association with the output of a picture signal which is obtained by optic-electrical conversion from the image sensor according to the reading range based on the setting of the reading range setting unit.
    Type: Application
    Filed: July 24, 2015
    Publication date: January 28, 2016
    Inventor: Kunihiko Kanai
  • Patent number: 7817910
    Abstract: An imaging apparatus includes an image sensor; a strobe unit; a preliminary. illumination controller which instructs the strobe unit to preliminarily illuminate for a predetermined period before main illumination; a reading controller which divides the image sensor into a plurality of regions, controls an exposure period for each region, corresponding to the preliminary illumination, and reads an image signal from each of the regions; and an imaging exposure setting unit which sets an appropriate amount of strobe light to be fired during imaging according to the image signals read from the regions; wherein the reading controller controls the exposure period for each region so that an overlapping period with the preliminary illumination period of the strobe unit is different from each other.
    Type: Grant
    Filed: March 14, 2007
    Date of Patent: October 19, 2010
    Assignee: Eastman Kodak Company
    Inventors: Hiroshi Miyazawa, Kunihiko Kanai, Hideo Nakamura
  • Patent number: 7734165
    Abstract: When focus adjustment operation is performed, a first measured distance acquired by utilization of TTL-AF and a second measured value acquired by utilization of a distance between the eyes have been computed in advance. The degree of reliability of the first measured distance is compared the degree of reliability of the second measured distance in accordance with a result of a determination as to whether or not a face is detected, a result of a determination as to whether or not an ambient brightness value Br is equal to or less than a reference value, a result of a determination as to whether or not a focal length “f” is equal to or less than a reference value, and a result of a determination as to whether or not a second measured distance De is less than a first measured distance Dt.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: June 8, 2010
    Assignee: Eastman Kodak Company
    Inventors: Naoki Mizutani, Kunihiko Kanai, Yuji Shibata, Masao Harada
  • Patent number: 7653299
    Abstract: An image of appropriate exposure is obtained in a short period of time. A controller and timing generator performs photometric measurement by use of an image signal acquired from a CCD, and determines appropriate light exposure. The CCD is divided into a plurality of regions: for example, an odd-number line region and an even-number line region. Timing at which accumulated electric charges are read from the respective regions is changed, thereby changing the light exposure of an image signal read from each of the regions. When the amount of light fired during the main flash is adjusted by means of causing a strobe to fire preliminary light, read timing is changed in such a way that an electric charge accumulation period of the odd-number line regions comes to an arbitrary point in time during the course of firing of preliminary light.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: January 26, 2010
    Assignee: Eastman Kodak Company
    Inventors: Hiroshi Miyazawa, Kunihiko Kanai, Hideo Nakamura
  • Patent number: 7583308
    Abstract: The present invention provides a digital camera which has a plurality of image capturing optical systems and quickly performs automatic focusing. A digital camera includes a first image capturing optical system formed from a lens 2 and a first image sensor, and a second image capturing optical system formed from a lens 3 and a second image sensor. An image processor detects a phase difference between an image of a single subject formed on the first image sensor and an image of the same formed on the second image sensor, in order to perform phase-difference AF. Since the lenses 2, 3 have different focal lengths, the image processor executes correlation operation after having performed conversion processing for causing a scaling factor of the image formed by the first image sensor to coincide with that of the image formed by the second image sensor, to thus detect a phase difference.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: September 1, 2009
    Assignee: Eastman Kodak Company
    Inventors: Kunihiko Kanai, Hidenori Shiraki
  • Publication number: 20090167931
    Abstract: An imaging device is provided to perform focus control by detecting a facial part of a person, or to prevent focus shift to a background other than a human subject even when no facial part is detected, and to ensure that a subject desired by a user is photographed. A timer is started by a half-pressing operation of a release button. When a facial part of a person is detected, photographing is performed by focusing on the facial part. When no facial part is detected, the lengths of a time period T2 elapsed since the half-pressing operation of the release button and a threshold time period T3 are compared, and focus methods are switched according to the comparison result. For example, when the release button is full-pressed in one pressing operation, multi-AF is performed to focus on the human subject.
    Type: Application
    Filed: April 28, 2008
    Publication date: July 2, 2009
    Inventors: Kunihiko Kanai, Naoki Mizutani
  • Patent number: 7480450
    Abstract: Coordinated image capturing is appropriately performed even if an error occurs in the synchronization between cameras that are connected via a network. Camera A for image capturing and camera B for providing strobe light are connected via a radio network, and camera A sets a point at which to start exposure for image capturing Tx and a point at which to start strobe emission Tf such that Tx is earlier than Tf, the time difference Id between Tx and Tf becomes larger than a synchronization error Ie between a synchronous clock of camera A and a synchronous clock of camera B, and the sum (Id+If+Ie) of the time difference Id, the strobe emission period If and the synchronization error Ie becomes smaller than exposure period Ix. Then, camera A outputs a strobe emission command with Tf designated and an exposure command with Tx designated, and controls the exposure control mechanism to start exposure at Tx in response to the exposure command.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: January 20, 2009
    Assignee: Eastman Kodak Company
    Inventors: Masao Kobayashi, Shuji Asami, Kunihiko Kanai
  • Publication number: 20080239136
    Abstract: A device detects focal length using image data and an optical system is driven. Image data are acquired while changing focal length to lens. For each image data, high frequency contrast component evaluated values VH, and low frequency contrast component evaluated values VL, are acquired. If there is no moire, an image focal length D1 is determined using a peak value of the high frequency component evaluated values VH. If there is moire, in a range of high frequency component evaluated values adopting values less than or equal to a reference evaluated value VL2 calculated based on low frequency component evaluated values and photographing conditions, image capture focal lengths Da and Db are determined.
    Type: Application
    Filed: April 26, 2005
    Publication date: October 2, 2008
    Inventors: Kunihiko Kanai, Minoru Yajima
  • Publication number: 20080192139
    Abstract: An image capture method, calculating a first focal length from acquired image data, and detecting whether or not there is -moiré in the image of the first focal length and carrying out image capture with the first focal length set as an image capture focal length when there is no moiré in the image data of the first focal length, calculating a specified range from acquired image data when there is moiré in the image data of the first focal length, and carrying out respective image captures with a plurality of focal lengths within this specified range set as image capture focal length.
    Type: Application
    Filed: June 29, 2005
    Publication date: August 14, 2008
    Inventors: Kunihiko Kanai, Minoru Yajima
  • Publication number: 20080050108
    Abstract: The accuracy of focus adjustment operation is enhanced further. When focus adjustment operation is performed, a first measured distance acquired by utilization of TTL-AF and a second measured value acquired by utilization of a distance between the eyes have been computed in advance. The degree of reliability of the first measured distance is compared the degree of reliability of the second measured distance in accordance with a result of a determination as to whether or not a face is detected (S10), a result of a determination as to whether or not an ambient brightness value Br is equal to or less than a reference value (S12), a result of a determination as to whether or not a focal length “f” is equal to or less than a reference value (S16), and a result of a determination as to whether or not a second measured distance De is less than a first measured distance Dt (S18). Focus adjustment operation is performed in accordance with a measured distance determined to be more reliable.
    Type: Application
    Filed: March 22, 2007
    Publication date: February 28, 2008
    Inventors: Naoki Mizutani, Kunihiko Kanai, Yuji Shibata, Masao Harada
  • Publication number: 20070253695
    Abstract: An image of appropriate exposure is obtained in a short period of time. A controller and timing generator performs photometric measurement by use of an image signal acquired from a CCD, and determines appropriate imaging exposure. The CCD is divided into a plurality of regions: for example, an odd-number line region and an even-number line region. Timing at which accumulated electric charges are read from the respective regions is changed, thereby changing the imaging exposure of an image signal read from each of the regions. When the amount of light fired during the main flash is adjusted by means of causing a strobe to fire preliminary light, read timing is changed in such a way that an electric charge accumulation period of the odd-number line regions comes to an arbitrary point in time during the course of firing of preliminary light.
    Type: Application
    Filed: March 14, 2007
    Publication date: November 1, 2007
    Inventors: Hiroshi Miyazawa, Kunihiko Kanai, Hideo Nakamura
  • Publication number: 20070253694
    Abstract: An image of appropriate exposure is obtained in a short period of time. A controller and timing generator performs photometric measurement by use of an image signal acquired from a CCD, and determines appropriate light exposure. The CCD is divided into a plurality of regions: for example, an odd-number line region and an even-number line region. Timing at which accumulated electric charges are read from the respective regions is changed, thereby changing the light exposure of an image signal read from each of the regions. When the amount of light fired during the main flash is adjusted by means of causing a strobe to fire preliminary light, read timing is changed in such a way that an electric charge accumulation period of the odd-number line regions comes to an arbitrary point in time during the course of firing of preliminary light.
    Type: Application
    Filed: September 26, 2006
    Publication date: November 1, 2007
    Inventors: Hiroshi Miyazawa, Kunihiko Kanai, Hideo Nakamura
  • Publication number: 20070096024
    Abstract: A digital camera automatically determines a scene for image capturing. A temperature sensor detects the temperature of a field, and a temperature-based information characteristic extraction circuit classifies the temperature into any of “high temperature,” “body temperature,” and “low temperature” categories. A scene determination circuit determines a scene by combination of temperature characteristics with movements, a hue, saturation, luminance, and the like, of an image detected by an image characteristic extraction circuit. For instance, when a lower portion of the screen has a low color temperature and a low saturation level, the scene is determined to be snow scene. According to the determined scene, a CPU controls exposure, shutter speed, the quantity of strobe light, and the like.
    Type: Application
    Filed: August 16, 2006
    Publication date: May 3, 2007
    Inventors: Hiroaki Furuya, Kunihiko Kanai
  • Publication number: 20070035628
    Abstract: An appropriate angle of view for image capturing of an object is set and an image is captured. A digital camera comprises a first image-capturing optical system having a lens and a first image sensor, and a second image-capturing optical system having a lens and a second image sensor. A distance to an object is measured by use of an image of the first image-capturing optical system having a relatively wide angle of view. When the object is detected to fall within an angle of view at a position of distance X, an angle of view of the second image-capturing optical system is automatically controlled to the appropriate angle of view and an image is captured. When a face portion of an object falls within the angle of view of the first image-capturing optical system, an appropriate angle of view corresponding to the face portion is set and the angle of view of the second image-capturing optical system is automatically controlled.
    Type: Application
    Filed: March 1, 2006
    Publication date: February 15, 2007
    Inventor: Kunihiko Kanai
  • Publication number: 20070024738
    Abstract: The present invention provides a digital camera which has a plurality of image capturing optical systems and quickly performs automatic focusing. A digital camera includes a first image capturing optical system formed from a lens 2 and a first image sensor, and a second image capturing optical system formed from a lens 3 and a second image sensor. An image processor detects a phase difference between an image of a single subject formed on the first image sensor and an image of the same formed on the second image sensor, in order to perform phase-difference AF. Since the lenses 2, 3 have different focal lengths, the image processor executes correlation operation after having performed conversion processing for causing a scaling factor of the image formed by the first image sensor to coincide with that of the image formed by the second image sensor, to thus detect a phase difference.
    Type: Application
    Filed: February 23, 2006
    Publication date: February 1, 2007
    Inventors: Kunihiko Kanai, Hidenori Shiraki