Automatic Change Of Focal Length Patents (Class 396/77)
  • Patent number: 10182225
    Abstract: Images captured by a camera system can be processed to detect precipitation in one or more of the images, and to generate a reconstructed image(s) without the precipitation, or with a reduced amount of the precipitation. Detection of precipitation can be based on a difference between a first feature in a first image and a second feature in a second image that corresponds to the first feature, where the first and second images were captured by different cameras at different times. A determination as to whether precipitation is present in the first image and the second image can be based at least in part on a disparity between the first feature and the second feature.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: January 15, 2019
    Assignee: Amazon Technologies, Inc.
    Inventors: Chengwu Cui, Barry James O'Brien, Joshua John Watson
  • Patent number: 9883097
    Abstract: A method is described that includes identifying a set of features of an object, the features being tracked in an image captured by a camera. The method also includes creating a field of vectors for the reference points. The vectors indicate magnitude and direction of change in position of the reference points across more than one frame of the image. The method further includes identifying existence of out of plane movement of the object's features from same radial orientation of the vectors. The method further includes determining an amount of closer/farther movement of the object's features to/from the camera from change in distances between a plurality of the reference points. The method further includes adjusting a position of camera's lens in view of the amount of closer/farther movement of the object's features to keep the camera focused on the object.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: January 30, 2018
    Assignee: Google Inc.
    Inventors: Vlad C. Cardei, Andrey Yatsunenko, Edward Chang
  • Patent number: 9426366
    Abstract: A digital photographing apparatus having low power consumption includes a lens unit, an encoder sensor configured to detect a rotational state of the lens unit, a power supply controller configured to control power supply such that an operation of turning on the encoder sensor to generate a detection signal and an operation of turning off the encoder sensor are repeatedly performed, and a determiner configured to determine the rotational state of the lens unit from the detection signal.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: August 23, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Myung-won Park, Dong-eui Shin, Seung-han Lee, Ki-oh Jung
  • Patent number: 9106821
    Abstract: Approaches are described which enable a user of a computing device (e.g., mobile phone, tablet computer) to capture a first image using the front-facing camera and then use that first image to guide the capturing of a second image (e.g., a higher quality image) using the rear-facing camera of the device. When the user turns the device around, the first image is used as a model template to guide the user in moving and/or rotating the device to align the rear-facing camera for capturing the second image.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: August 11, 2015
    Assignee: AMAZON TECHNOLOGIES, INC.
    Inventors: Leo Benedict Baldwin, Philip Scott McClendon
  • Patent number: 9007512
    Abstract: A focusing method includes operations (a) through (d). In (a), a maximum focus value generated during a searching is set as a first maximum focus value. In (b), the focus lens moves to a first position that is the position of the first maximum focus value. In (c), a focus value generated when the focus lens moves to the first position is set as a second maximum focus value. In (d), if it is determined that a difference value between the first maximum focus value and the second maximum focus value is greater than a first set allowance value, a position of a focus value, whose difference value from the first maximum focus value is less than a second set allowance value, is searched for within a second range that has the first position as its center and is narrower than the first range.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: April 14, 2015
    Assignee: Samsung Techwin Co., Ltd.
    Inventor: Young-Taek Hong
  • Patent number: 8890995
    Abstract: An image pickup device includes an image pickup element; a lens optical system including a focus lens; a driving section for driving one of the image pickup element and the focus lens so as to change a distance between the image pickup element and the focus lens; a displacement control section configured to output an instruction to the driving section to control displacement of the image pickup element or the focus lens which is driven, based on a prescribed displacement pattern; and a synchronization section configured to control the displacement control section based on timing for exposing the image pickup element.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: November 18, 2014
    Assignee: Panasonic Corporation
    Inventors: Takeshi Shimamoto, Takashi Kawamura, Yusuke Monobe
  • Patent number: 8717691
    Abstract: A lens barrel includes a lens group including a fixed lens including one or more lenses and an adjustment lens including one or more lenses, and a lens frame to hold the lens group, including an adjustment lens frame to hold the adjustment lens and an aligning mechanism to hold the adjustment lens frame movably in a direction orthogonal to an optical axis of the lens group relative to the lens frame.
    Type: Grant
    Filed: September 12, 2011
    Date of Patent: May 6, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Daisuke Terahara, Takehide Ohno
  • Patent number: 8670657
    Abstract: The ranging apparatus of the present invention measures the distance to an object to be imaged by an imaging apparatus using the principle of triangulation ranging, and has a measurement unit in which a maximum distance that can be ranged to an object is not less than ½ of a maximum value of the hyper focal length of the imaging apparatus.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: March 11, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masakazu Kodaira
  • Patent number: 8581963
    Abstract: A method and system for hiding objectionable frames during autofocusing are disclosed. A personal electronic device such as a cameral telephone can have two cameras that have overlapping fields of view. One camera can provide imaging. The other camera can facilitate autofocusing in a manner wherein images produced thereby are not viewed by a user. Because the autofocus frames are hidden, the user is not distracted or annoying thereby.
    Type: Grant
    Filed: October 15, 2012
    Date of Patent: November 12, 2013
    Assignee: DigitalOptics Corporation MEMS
    Inventors: Richard Tsai, Xiaolei Liu
  • Patent number: 8582964
    Abstract: An imaging device moves a zoom lens, so as to change the magnification of an image of a subject, and obtains a near limit position of a focusing lens to the subject at a zoom lens position. When a target position of the focusing lens, which is required to keep the image in focus after the zoom lens is moved, is located on a near side, i.e., on an imaging plane side, of a threshold position determined based on the obtained near limit position, focus control is performed to move the focusing lens and thereby focus. When the target position of the focusing lens is not located on the near side but is located on a subject side of the threshold position, on the other hand, focus control is performed to move the zoom lens to a wider position and subsequently move the focusing lens to focus the image.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: November 12, 2013
    Assignee: Elmo Company, Limited
    Inventors: Masaaki Toguchi, Tetsuya Horike
  • Patent number: 8565589
    Abstract: A zoom tracking controller includes a lens position acquiring unit that acquires the positions of a first zoom lens and a first focus lens, a cam curve storage unit that stores at least one reference cam curve, a normalizing unit that normalizes the acquired first zoom lens position and first focus lens position to a zoom lens position and a focus lens position on one of at least one reference cam curve according to a first cam curve and the reference cam curve, a focused lens position determining unit that determines second zoom lens and second focus lens positions on a second cam curve from the normalized zoom lens and focus lens positions according to the second cam curve and reference cam curve, and a lens controller that respectively moves the second zoom lens and second focus lens to the determined second zoom lens position and second focus lens position.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: October 22, 2013
    Assignee: Sony Corporation
    Inventor: Sakae Okazaki
  • Patent number: 8532477
    Abstract: A lens control device which is capable of controlling lens positions such that an in-focus state of an object image can be maintained even when a variable power lens is positioned outside a normal zoom range from a wide-angle end to a telephoto end. A flash memory stores a positional relationship between the variable power lens and a focus lens, on an object distance-by-object distance basis. A system controller controls the movement of the focus lens by calculating the in-focus position of the focus lens with respect to the position of the variable power lens based on the positional relationship stored in the flash memory when the variable power lens is moved to a position outside the normal zoom range defined in the positional relationship stored in the flash memory.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: September 10, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yusuke Kazami
  • Patent number: 8526805
    Abstract: A lens apparatus includes a zoom, a focus, a zoom position control signal generator, a focus position control signal generator, a first calculator for calculating a present angle of field from zoom and focus positions, a second calculator for calculating a second angle of field based on a zoom control signal and a focus position, a third calculator for calculating a third angle of field based on zoom and focus position control signals, used when the second calculation unit calculates, a base angle-of-field determinater for determining a sum of the present angle of field and a value obtained by subtracting the third angle of field from the second angle of field, as a base angle of field, and a zoom position control determinater for determining a zoom position to a position of the zoom lens corresponding to the base angle of field to which the zoom lens is driven.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: September 3, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Katsuhiko Nagata
  • Patent number: 8526804
    Abstract: An image pickup apparatus detects a subject based on an image signal output from an image sensing unit and acquires a size of the detected subject. The image pickup apparatus performs an automatic zooming operation such that a zoom lens is driven so as to increase or decrease the size of the subject so that the size of the subject becomes equal to a reference size of the subject. In a case where the difference between the size of the subject and the reference size has increased beyond a predetermined threshold value and the position of the zoom lens has reached a wide angle end or a telephoto end, the image pickup apparatus resets the reference size to be equal to the current size of the subject.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: September 3, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yosuke Morimoto
  • Patent number: 8525870
    Abstract: A remote communication apparatus for receiving the image of a remote user captured by an imaging device to show the image to another user includes a zoom controller for controlling a zoom ratio defining the angle of view of the imaging device, and an estimator for estimating a distance between the imaging device and the remote user on the basis of the zoom ratio of the imaging device.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: September 3, 2013
    Assignee: Oki Electric Industry Co., Ltd.
    Inventor: Masayuki Tokumitsu
  • Patent number: 8493430
    Abstract: A remote communication apparatus for receiving the image of a remote user captured by an imaging device to show the image to another user includes a zoom controller for controlling a zoom ratio defining the angle of view of the imaging device, and an estimator for estimating a distance between the imaging device and the remote user on the basis of the zoom ratio of the imaging device.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: July 23, 2013
    Assignee: Oki Electric Industry Co., Ltd.
    Inventor: Masayuki Tokumitsu
  • Patent number: 8422878
    Abstract: An imaging apparatus and an auto focusing method are provided. A plurality of focus signal values are calculated for a plurality of frequency bands of a captured image signal. An amount of defocus of a focus lens is calculated based on focus signal values calculated for two positions. A position of the focus lens is controlled depending on the calculated amount of defocus. Thereby, the imaging apparatus can detect a focus at higher speed.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: April 16, 2013
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Kyong-Tae Park, Jeong-Won Lee, Kyoung-Hwan Moon
  • Publication number: 20130089312
    Abstract: A camera module includes a base board, a holder, a conductive circuit, a camera lens and an electric-controlled light permissible element. A light sensing element is disposed on the base board, and a control signal is issued from the base board. The holder is connected to the base board and arranged on the light sensing element. The conductive circuit is arranged on the holder and electrically connected to the base board for receiving the control signal. The conductive circuit does not extend out of a surface of the holder. The camera lens has a lens and arranged with respect to the light sensing element. The electric-controlled light permissible element is electrically connected to the conductive circuit and arranged with respect to the light sensing element. The electric-controlled light permissible element changes its surface according to the control signal, thereby adjusting a focal length of the camera lens.
    Type: Application
    Filed: March 3, 2012
    Publication date: April 11, 2013
    Applicant: LARGAN PRECISION CO., LTD.
    Inventor: Chen-Yi HUANG
  • Patent number: 8363108
    Abstract: An autofocus system includes: an image pickup unit; an autofocus unit performing focus adjustment such that a subject in a AF area is to be in focus in the photographing image; a tracking unit moving the AF area to follow the movement of the subject in the range of the photographing image; a reference pattern registering unit registering the subject image in focus as a reference pattern; and a matched image detecting unit detecting a subject which is most closely matched with the reference pattern in the photographing image. When the amount of movement of the detected subject in a screen is less than a given value, the reference pattern is updated with the image of the subject, and an AF frame is updated to follow the moved subject. When the amount of movement is equal to or more than the given value, a tracking operation stops.
    Type: Grant
    Filed: December 9, 2009
    Date of Patent: January 29, 2013
    Assignee: FUJINON Corporation
    Inventor: Kunio Yata
  • Patent number: 8346073
    Abstract: According to an aspect of the present invention, once the mode setting device sets the person photographing mode, and the face zooming instruction device instructs zooming to the face of the person, the detection device detects the size of the face of the person captured by the image pickup device. The zooming device is then controlled so as to capture the face of the person in a certain size based on the detection result. Subsequently, the photographer instructs zooming in the telephoto direction or the wide direction using the zooming instruction device as necessary to thereby allow fine adjustment of the composition. This enables to easily and quickly photograph an image in a user's desired composition.
    Type: Grant
    Filed: April 7, 2010
    Date of Patent: January 1, 2013
    Assignee: FUJIFILM Corporation
    Inventor: Syuji Nose
  • Publication number: 20120243856
    Abstract: An interchangeable lens attachable to a camera body includes a first operable member, a second operable member, an operation member for receiving user's operation for the first operable member or the second operable member, an obtaining unit configured to obtain, from the camera body, selection information for selecting the operable member to be assigned to the operation member, and a controller configured to make the operation member function as a member for operating either one of the first operable member and the second operable member based on the selection information.
    Type: Application
    Filed: March 21, 2012
    Publication date: September 27, 2012
    Applicant: PANASONIC CORPORATION
    Inventor: KOJI SHIBUNO
  • Patent number: 8254771
    Abstract: According to an aspect of the present invention, once the mode setting device sets the person photographing mode, and the face zooming instruction device instructs zooming to the face of the person, the detection device detects the size of the face of the person captured by the image pickup device. The zooming device is then controlled so as to capture the face of the person in a certain size based on the detection result. Subsequently, the photographer instructs zooming in the telephoto direction or the wide direction using the zooming instruction device as necessary to thereby allow fine adjustment of the composition. This enables to easily and quickly photograph an image in a user's desired composition.
    Type: Grant
    Filed: April 7, 2010
    Date of Patent: August 28, 2012
    Assignee: Fujifilm Corporation
    Inventor: Syuji Nose
  • Publication number: 20120170921
    Abstract: A zoom tracking controller includes a lens position acquiring unit that acquires the positions of a first zoom lens and a first focus lens, a cam curve storage unit that stores at least one reference cam curve, a normalizing unit that normalizes the acquired first zoom lens position and first focus lens position to a zoom lens position and a focus lens position on one of at least one reference cam curve according to a first cam curve and the reference cam curve, a focused lens position determining unit that determines second zoom lens and second focus lens positions on a second cam curve from the normalized zoom lens and focus lens positions according to the second cam curve and reference cam curve, and a lens controller that respectively moves the second zoom lens and second focus lens to the determined second zoom lens position and second focus lens position.
    Type: Application
    Filed: December 14, 2011
    Publication date: July 5, 2012
    Applicant: Sony Corporation
    Inventor: Sakae OKAZAKI
  • Publication number: 20120155844
    Abstract: A lens apparatus includes a zoom, a focus, a zoom position control signal generator, a focus position control signal generator, a first calculator for calculating a present angle of field from zoom and focus positions, a second calculator for calculating a second angle of field based on a zoom control signal and a focus position, a third calculator for calculating a third angle of field based on zoom and focus position control signals, used when the second calculation unit calculates, a base angle-of-field determinater for determining a sum of the present angle of field and a value obtained by subtracting the third angle of field from the second angle of field, as a base angle of field, and a zoom position control determinater for determining a zoom position to a position of the zoom lens corresponding to the base angle of field to which the zoom lens is driven.
    Type: Application
    Filed: December 20, 2011
    Publication date: June 21, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Katsuhiko NAGATA
  • Patent number: 8144236
    Abstract: A photography device that includes an imaging component, a focusing component, a magnification alteration component, a display component, an acquisition component and a control component is provided. The focusing component focuses a subject image on an imaging surface of the imaging component. The magnification alteration component alters a magnification of the subject image focused by the focusing component. The acquisition component acquires a focusing evaluation value representing a degree of focusing of the subject image by the focusing component. The control component performs focusing control by controlling the focusing component such that the focusing evaluation value acquired by the acquisition component is at a maximum, and controls the magnification alteration component so as to lower a display magnification of the subject image by the display component if the focusing evaluation value is at or below a pre-specified threshold value.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: March 27, 2012
    Assignee: Fujifilm Corporation
    Inventor: Daisuke Shikata
  • Publication number: 20120063758
    Abstract: The ranging apparatus of the present invention measures the distance to an object to be imaged by an imaging apparatus using the principle of triangulation ranging, and has a measurement unit in which a maximum distance that can be ranged to an object is not less than ½ of a maximum value of the hyper focal length of the imaging apparatus.
    Type: Application
    Filed: September 8, 2011
    Publication date: March 15, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Masakazu KODAIRA
  • Patent number: 8084969
    Abstract: A linear motion control device for use in a linear control system is presented. The linear motion control device includes a coil driver to drive a coil that, when driven, effects a linear movement by a motion device having a magnet. The linear motion control device also includes a magnetic field sensor to detect a magnetic field associated with the linear movement and an interface to connect an output of the magnetic field sensor and an input of the coil driver to an external controller. The interface includes a feedback loop to relate the magnetic field sensor output signal to the coil driver input.
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: December 27, 2011
    Assignee: Allegro Microsystems, Inc.
    Inventors: Paul David, Shaun D. Milano
  • Patent number: 8045045
    Abstract: An image pickup apparatus which is capable of optimizing the responsiveness of linear changes in focus to operations of a ring member without sacrificing the operability of the ring member, while using a small-sized, low-cost ring member for manual operations. The rotating operation state of a focus ring 600 is detected by ring rotation sensors 603, 604. A camera microcomputer 116 causes a focus lens 105 to be moved and stopped in an optical axis direction thereof based on results of the detection by the ring rotation sensors 603, 604. The camera microcomputer 116 controls the responsiveness of linear changes in focus to the rotating operation state of the ring member detected by the ring rotation sensors 603, 604 in accordance with at least the depth of focus.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: October 25, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroto Okawara
  • Patent number: 8040426
    Abstract: An automatic focusing mechanism comprises a plurality of lenses and an image sensor disposed along an optical axis, an electromagnetic driving device for generating an electromagnetic force to drive the image sensor to move along the optical axis, and a position-limited device for limiting the movement of the image sensor along the optical axis. The image sensor is driven by the electromagnetic force and moved along the optical axis, and the distance between the lenses and the image sensor is properly adjusted, thereby realizing automatic focusing.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: October 18, 2011
    Assignee: China Mobile Internet Technologies Inc.
    Inventor: Chao-hui Zhou
  • Publication number: 20110243538
    Abstract: An image pickup apparatus detects a subject based on an image signal output from an image sensing unit and acquires a size of the detected subject. The image pickup apparatus performs an automatic zooming operation such that a zoom lens is driven so as to increase or decrease the size of the subject so that the size of the subject becomes equal to a reference size of the subject. In a case where the difference between the size of the subject and the reference size has increased beyond a predetermined threshold value and the position of the zoom lens has reached a wide angle end or a telephoto end, the image pickup apparatus resets the reference size to be equal to the current size of the subject.
    Type: Application
    Filed: January 24, 2011
    Publication date: October 6, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Yosuke Morimoto
  • Patent number: 7962026
    Abstract: Provided are a discrete AF control method and an error correcting method of a camera module using a diffraction device. In the method, a focus is moved to a (the number of all positions/m)-th position, and a focusing value at a start position is compared with that at the (the number of all positions/m)-th position. A focus is moved by two positions in a first direction according to the comparison result. If a position having a maximum focusing value is passed, a focus is moved by one position in a direction opposite to the first direction and a location (corresponding to an n-th position) is stored. Focusing values of the n-th position, an (n?1)-th position, and an (n?2)-th position are compared with one another to determine a maximum focus location, m being an integer equal to or greater than 2.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: June 14, 2011
    Assignee: LG Electronics Inc.
    Inventor: Yong Seok Chi
  • Patent number: 7899315
    Abstract: A method of automatically adjusting a depth of field, suitable for adjusting settings relevant to the depth of field when pre-shooting an image to be shot through a digital camera, includes capturing an image to be shot; dividing the image into a plurality of detected blocks; performing a statistic process for an object distance on each detected block, and recording an object distance value of each detected block; generating an object-distance cumulative curve according to the object distance value of each detected block; performing a smoothing process to eliminate peak curves generated in the object-distance cumulative curve; looking up a mode of all the object distance values and a corresponding detected block according to the object-distance cumulative curve; adjusting corresponding aperture and focal length of the digital camera according to the corresponding detected block. The user shoots images at different sites without adjusting the digital camera into corresponding shoot mode.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: March 1, 2011
    Assignee: Altek Corporation
    Inventors: Hong-Long Chou, Shih-Yuan Peng
  • Publication number: 20100296802
    Abstract: The Self-Zooming Camera uses proximity detectors and/or motion detectors in the camera to detect the position of the camera/recording device relative to the operator's eye or face. At closest viewable distance to the face (approx. 6 inches), the zoom lens operates at it's widest angle or user-specified widest angle setting. At furthest extent from the face (arm's length, approximately 2 feet), the camera zooms to its longest telephoto extent or user-specified longest zoom setting. The Self-Zooming Camera allows simple and creative zoom operation of a camera, video recorder or mobile device with camera without using buttons or zoom/focus pulling—replacing traditional controls with intuitive gesture or camera motion.
    Type: Application
    Filed: July 7, 2009
    Publication date: November 25, 2010
    Inventor: John Andrew Davies
  • Patent number: 7808547
    Abstract: A drive control apparatus for a lens apparatus having a zoom lens movable between a telephoto end and a wide-angle end according to the present invention comprises a selecting member which selects a zoom position between the telephoto end and the wide-angle end, a controller which has a drive range limiting function of controlling drive of the zoom lens by using the selected zoom position as a drive end, and a drive range switch member which switches the drive range limiting function between an invalid state and a valid state. The controller drives the zoom lens to the drive end when the drive range limiting function is switched to the valid state.
    Type: Grant
    Filed: June 1, 2004
    Date of Patent: October 5, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Keisuke Hirai, Kazumasa Yoshikawa
  • Patent number: 7798656
    Abstract: A projector device, includes: a projector unit, including a light source and a projection lens whose focal position is variable, that projects an image upon a projection surface with a light flux outputted from the light source that passes through the projection lens; an image-capturing unit, including a photographic lens whose focal position is variable, that captures an image of a subject with a light flux from the exterior that passes through the photographic lens; and a single drive source that generates drive force for changing both the focal position of the projection lens and the focal position of the photographic lens.
    Type: Grant
    Filed: November 17, 2005
    Date of Patent: September 21, 2010
    Assignee: Nikon Corporation
    Inventors: Hirotake Nozaki, Nobuhiro Fujinawa
  • Patent number: 7783183
    Abstract: Systems and methods for reducing the visibility of rain in acquired images are provided. One or more inputs relating the scene desired to be acquired by the user are used to retrieve camera settings that will reduce the visibility of rain in acquired images. Additionally, features relating to the scene may be automatically determined and used alone, or in combination with user inputs, to retrieve camera settings. The acquired images may be part of a video. Another feature of the invention is its use as a rain gauge. The camera settings are adjusted to enhance the visibility of rain, then one or more images are acquired and analyzed for the amount and size of raindrops. From this analysis the rain rate can be determined.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: August 24, 2010
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Kshitiz Garg, Shree K. Nayar
  • Patent number: 7778537
    Abstract: A zooming system includes a selecting unit, a detection unit, a calculating unit, a controlling unit, and a zooming unit. The selecting unit is configured for selecting a zoom mode based on the presence of faces in a pre-image. The detection unit is configured for detecting facial areas in the pre-image. The calculating unit is configured for calculating a zoom ratio on the basis of a dimensional ratio of the detected facial areas to the pre-image. The zooming unit is controlled by the controlling unit to zoom the imaging device according to the zoom ratio.
    Type: Grant
    Filed: April 14, 2008
    Date of Patent: August 17, 2010
    Assignees: Premier Image Technology (China) Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventor: Qi-Da Guan
  • Patent number: 7777968
    Abstract: A photographing lens driving control apparatus includes a plurality of lens groups constituting a zooming optical system including a lens group (1A) on an object side and a lens group (1B) on an imaging side, a plurality of tens driving device (4A, 4B, 4C) configured to drive the plurality of tens groups, respectively, and a control device (5B) configured to control the plurality of lens driving devices; the control device (5B) adjusts a driving speed of the lens group on the object side according to a position of the lens group on the imaging side relative to a position of the lens group on the object side, when driving the lens group on the object side.
    Type: Grant
    Filed: March 12, 2007
    Date of Patent: August 17, 2010
    Assignee: Ricoh Company, Ltd.
    Inventor: Koichi Sugiura
  • Publication number: 20100195994
    Abstract: According to an aspect of the present invention, once the mode setting device sets the person photographing mode, and the face zooming instruction device instructs zooming to the face of the person, the detection device detects the size of the face of the person captured by the image pickup device. The zooming device is then controlled so as to capture the face of the person in a certain size based on the detection result. Subsequently, the photographer instructs zooming in the telephoto direction or the wide direction using the zooming instruction device as necessary to thereby allow fine adjustment of the composition. This enables to easily and quickly photograph an image in a user's desired composition.
    Type: Application
    Filed: April 7, 2010
    Publication date: August 5, 2010
    Inventor: Syuji NOSE
  • Publication number: 20100189426
    Abstract: A method and system for automatic zoom adjustment is disclosed. Content is displayed on a display screen for a user. In an auto-zoom mode, a first and a second pictures are acquired. Pre-determined features are detected from the first and second pictures. A first and a second feature distances are computed based on the pre-determined features detected from the first and second pictures, respectively. The first and second feature distances relate to the user's head movement relative to the display screen. An adjustment to the zoom of the content on display is determined based on the difference between the first and the second feature distances.
    Type: Application
    Filed: September 16, 2009
    Publication date: July 29, 2010
    Inventors: Fu Bao, Ye Guo, Shih-Kuang Tsai
  • Patent number: 7729601
    Abstract: An autofocus method can include moving a lens and reading out first image data associated with a plurality of image pixels during a first low light interval, modifying camera parameters to provide autofocus image light received during an autofocus light interval, acquiring second image data associated with the plurality of image pixels during the autofocus light interval, modifying camera parameters to substantially reduce image light received during a second low light interval, reading out the second image data during the second low light interval, and analyzing at least the first image data and the second image data to determine a focus position of the lens.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: June 1, 2010
    Assignee: Siimpel Corporation
    Inventor: Richard Tsai
  • Patent number: 7725019
    Abstract: A subject is imaged while an imaging lens is moved along the optic axis in incremental distances, and a graph of focus evaluations representing degree of focus of the subject image is obtained. Processing for detecting a face is executed at positions of the imaging lens where the focus evaluation value is equal to or greater than a threshold value. If a face is detected from the image of the subject obtained at positions of the imaging lens, then this range of positions is set as a focusing range and the subject is imaged while the imaging lens is moved within this focusing range. A graph of face-area focus evaluations representing degree of focus of the face detected from among the obtained images of the subject is obtained and the position at which this graph is maximum is decided upon as the in-focus position of the imaging lens.
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: May 25, 2010
    Assignee: FUJIFILM Corporation
    Inventor: Masahiko Sugimoto
  • Patent number: 7720369
    Abstract: According to an aspect of the present invention, once the mode setting device sets the person photographing mode, and the face zooming instruction device instructs zooming to the face of the person, the detection device detects the size of the face of the person captured by the image pickup device. The zooming device is then controlled so as to capture the face of the person in a certain size based on the detection result. Subsequently, the photographer instructs zooming in the telephoto direction or the wide direction using the zooming instruction device as necessary to thereby allow fine adjustment of the composition. This enables to easily and quickly photograph an image in a user's desired composition.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: May 18, 2010
    Assignee: Fujifilm Corporation
    Inventor: Syuji Nose
  • Patent number: 7697834
    Abstract: In a method and system for focusing a camera focus can be repeatedly alternated between an original focus position and a plurality of other focus positions. An image can be displayed when the focus position is the original focus position. The image can be suppressed at other focus positions when the images are out of focus. The image can be displayed at one of the other focus position when the image is in focus. In this manner, the display of annoying and distracting unfocused images is mitigated.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: April 13, 2010
    Assignee: Siimpel Corporation
    Inventor: Richard Tsai
  • Patent number: 7664383
    Abstract: A device may determine whether a user input for capturing a view is triggered and automatically frame a plurality of images of the view when the user input is determined to be triggered by repeatedly determining a zoom value for an image, optically zooming the view based on the zoom value, and capturing the zoomed view as the image.
    Type: Grant
    Filed: January 18, 2007
    Date of Patent: February 16, 2010
    Assignee: Sony Ericsson Mobile Communications AB
    Inventor: Rene Nilsson
  • Patent number: 7660517
    Abstract: Systems and methods for reducing the visibility of rain in acquired images are provided. One or more inputs relating the scene desired to be acquired by the user are used to retrieve camera settings that will reduce the visibility of rain in acquired images. Additionally, features relating to the scene may be automatically determined and used alone, or in combination with user inputs, to retrieve camera settings. The acquired images may be part of a video. Another feature of the invention is its use as a rain gauge. The camera settings are adjusted to enhance the visibility of rain, then one ore more images are acquired and analyzed for the amount and size of raindrops. From this analysis the rain rate can be determined.
    Type: Grant
    Filed: March 16, 2006
    Date of Patent: February 9, 2010
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Kshitiz Garg, Shree K. Nayar
  • Patent number: 7657166
    Abstract: A method is provided for performing a camera function including a zoom function by which an image of a subject is photographed in zoom steps so that the image is magnified or reduced. The method comprises the steps of detecting a distance between the subject and a camera, if a shutter key for photographing an image of the subject in a mode for photographing the subject in full size of a screen of a display section is input, regulating the magnification of the zoom in a zoom step stored in advance, corresponding to the detected distance, and photographing the image of the subject in a regulated magnification of the zoom. The optimum zoom step is automatically regulated according to the distance between the subject and the camera, and the image of the subject can be photographed in the full size of the screen of the display section without regulating the zoom directly.
    Type: Grant
    Filed: August 15, 2005
    Date of Patent: February 2, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Woo-Sun Yoon
  • Patent number: 7653297
    Abstract: AF lens position determination systems and methods. The system comprises an anti-dazzling screen, a sensor and a processing module. The anti-dazzling screen comprises first and second areas. The length of a respective covered sub-area in the first area is a first distance, and the length of a respective uncovered sub-area in the first area increases progressively from the center to a first border of the anti-dazzling screen. The length of a respective uncovered sub-area in the second area is a second distance, and the length of a respective covered sub-area in the second area increases progressively from the center to a second border of the anti-dazzling screen. The sensor moves within a range, and generates high and low signals based on the anti-dazzling screen. The processing module determines the position of an AF lens according to the signals generated by the sensor.
    Type: Grant
    Filed: August 20, 2007
    Date of Patent: January 26, 2010
    Assignee: Asia Optical Co., Inc.
    Inventor: Yung-Chun Sung
  • Patent number: 7609955
    Abstract: An image taking device has a multifocal lens which changes its focal length to change the image taking area on a subject from which an image is to be taken by an image pickup sensor, a distance sensor for measuring the distance to the subject, an image taking distance buffer unit for temporarily storing the image taking distance measured at a past time, a focal length computation unit which computes the focal length of the multifocal lens on the basis of the image taking distance at the present time measured by the distance sensor and the image taking distance supplied from the mage taking distance buffer unit, and a focus control unit which controls the focal length of the multifocal lens so that the focal length of the multifocal lens equals the focal length computed by the focal length computation unit.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: October 27, 2009
    Assignee: Panasonic Corporation
    Inventors: Hideto Motomura, Katsuhiro Kanamori
  • Patent number: 7590339
    Abstract: A digital camera is provided with a photographing lens, an image capturing element, which is configured to capture an optical image of an object formed by the photographing lens, a coarse movement control system configured to control a position of the photographing lens in a direction of an optical axis by a motor, and a fine movement control system configured to control a position of an image receiving area of the image capturing element in the direction of the optical axis is provided.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: September 15, 2009
    Assignee: HOYA Corporation
    Inventor: Yuichi Kurosawa