Patents by Inventor Yajie Sun
Yajie Sun 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).
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Publication number: 20170053392Abstract: A pair of cameras having an overlapping field of view is aligned based on images captured by image sensors of the pair of cameras. A pixel shift is identified between the images. Based on the identified pixel shift, a calibration is applied to one or both of the pair of cameras. To determine the pixel shift, the camera applies correlation methods including edge matching. Calibrating the pair of cameras may include adjusting a read window on an image sensor. The pixel shift can also be used to determine a time lag, which can be used to synchronize subsequent image captures.Type: ApplicationFiled: November 7, 2016Publication date: February 23, 2017Inventors: Yajie Sun, Timothy Macmillan, Elizabeth Torres Edwards, Sumit Chawla
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Patent number: 9521318Abstract: A pair of cameras having an overlapping field of view is aligned based on images captured by image sensors of the pair of cameras. A pixel shift is identified between the images. Based on the identified pixel shift, a calibration is applied to one or both of the pair of cameras. To determine the pixel shift, the camera applies correlation methods including edge matching. Calibrating the pair of cameras may include adjusting a read window on an image sensor. The pixel shift can also be used to determine a time lag, which can be used to synchronize subsequent image captures.Type: GrantFiled: October 6, 2015Date of Patent: December 13, 2016Assignee: GoPro, Inc.Inventors: Yajie Sun, Timothy Macmillan, Elizabeth Torres Edwards, Sumit Chawla
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Patent number: 9504436Abstract: A method for use in medical imaging of a patient including, with the patient immobilized with respect to an imaging reference frame, acquiring first digital imaging information including a first region of interest using a first imaging modality; processing the first digital imaging information to identify a feature for analysis; and using a second imaging modality to acquire targeted second imaging information for a second region of interest, the second region of interest corresponding to a subset of the first region of interest, wherein the second region of interest includes the feature for analysis.Type: GrantFiled: November 30, 2012Date of Patent: November 29, 2016Assignee: Hologic, Inc.Inventors: Jasjot S Suri, Yajie Sun, Roman Janer
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Publication number: 20160205381Abstract: A pair of cameras having an overlapping field of view is aligned based on images captured by image sensors of the pair of cameras. A pixel shift is identified between the images. Based on the identified pixel shift, a calibration is applied to one or both of the pair of cameras. To determine the pixel shift, the camera applies correlation methods including edge matching. Calibrating the pair of cameras may include adjusting a read window on an image sensor. The pixel shift can also be used to determine a time lag, which can be used to synchronize subsequent image captures.Type: ApplicationFiled: March 23, 2016Publication date: July 14, 2016Inventors: Timothy Macmillan, Scott Patrick Campbell, David A. Newman, Yajie Sun
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Patent number: 9325917Abstract: A pair of cameras having an overlapping field of view is aligned based on images captured by image sensors of the pair of cameras. A pixel shift is identified between the images. Based on the identified pixel shift, a calibration is applied to one or both of the pair of cameras. To determine the pixel shift, the camera applies correlation methods including edge matching. Calibrating the pair of cameras may include adjusting a read window on an image sensor. The pixel shift can also be used to determine a time lag, which can be used to synchronize subsequent image captures.Type: GrantFiled: January 27, 2015Date of Patent: April 26, 2016Assignee: GoPro, Inc.Inventors: Timothy MacMillan, Scott Patrick Campbell, David A. Newman, Yajie Sun
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Publication number: 20160037063Abstract: A pair of cameras having an overlapping field of view is aligned based on images captured by image sensors of the pair of cameras. A pixel shift is identified between the images. Based on the identified pixel shift, a calibration is applied to one or both of the pair of cameras. To determine the pixel shift, the camera applies correlation methods including edge matching. Calibrating the pair of cameras may include adjusting a read window on an image sensor. The pixel shift can also be used to determine a time lag, which can be used to synchronize subsequent image captures.Type: ApplicationFiled: October 6, 2015Publication date: February 4, 2016Inventors: Yajie Sun, Timothy Macmillan, Elizabeth Torres Edwards, Sumit Chawla
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Patent number: 9230306Abstract: An electronic device may have a camera module. The camera module may capture images having an initial depth of field. The electronic device may receive user input selecting a focal plane and an effective f-stop for use in producing a modified image with a reduced depth of field. The electronic device may include image processing circuitry that selectively blurs various regions of a captured image, with each region being blurred to an amount that varies with distance to the user selected focal plane and in response to the user selected effective f-stop (e.g., a user selected level of depth of field).Type: GrantFiled: February 6, 2013Date of Patent: January 5, 2016Assignee: Semiconductor Components Industries, LLCInventors: Yajie Sun, David R. Pope
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Patent number: 9197885Abstract: A pair of cameras having an overlapping field of view is aligned based on images captured by image sensors of the pair of cameras. A pixel shift is identified between the images. Based on the identified pixel shift, a calibration is applied to one or both of the pair of cameras. To determine the pixel shift, the camera applies correlation methods including edge matching. Calibrating the pair of cameras may include adjusting a read window on an image sensor. The pixel shift can also be used to determine a time lag, which can be used to synchronize subsequent image captures.Type: GrantFiled: March 20, 2014Date of Patent: November 24, 2015Assignee: GoPro, Inc.Inventors: Yajie Sun, Timothy Macmillan, Elizabeth Torres Martin, Sumit Chawla
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Publication number: 20150271483Abstract: A pair of cameras having an overlapping field of view is aligned based on images captured by image sensors of the pair of cameras. A pixel shift is identified between the images. Based on the identified pixel shift, a calibration is applied to one or both of the pair of cameras. To determine the pixel shift, the camera applies correlation methods including edge matching. Calibrating the pair of cameras may include adjusting a read window on an image sensor. The pixel shift can also be used to determine a time lag, which can be used to synchronize subsequent image captures.Type: ApplicationFiled: March 20, 2014Publication date: September 24, 2015Applicant: GoPro, Inc.Inventors: Yajie Sun, Timothy Macmillan, Elizabeth Torres Martin, Sumit Chawla
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Publication number: 20150271421Abstract: A pair of cameras having an overlapping field of view is aligned based on images captured by image sensors of the pair of cameras. A pixel shift is identified between the images. Based on the identified pixel shift, a calibration is applied to one or both of the pair of cameras. To determine the pixel shift, the camera applies correlation methods including edge matching. Calibrating the pair of cameras may include adjusting a read window on an image sensor. The pixel shift can also be used to determine a time lag, which can be used to synchronize subsequent image captures.Type: ApplicationFiled: January 27, 2015Publication date: September 24, 2015Inventors: Timothy MacMillan, Scott Patrick Campbell, David A. Newman, Yajie Sun
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Patent number: 9007441Abstract: A system of stereo imagers, including image processing units and methods of blurring an image, is presented. The image is received from an image sensor. For each pixel of the image, a depth filter component is determined based on a focal area of the image and a depth map associated with the image. For each pixel of the image, a trilateral filter is generated that includes a spatial filter component, a range filter component and the depth filter component. The respective trilateral filter is applied to corresponding pixels of the image to blur the image outside of the focal area. A refocus area or position may be determined by imaging geometry or may be selected manually via a user interface.Type: GrantFiled: January 31, 2012Date of Patent: April 14, 2015Assignee: Semiconductor Components Industries, LLCInventors: Yajie Sun, David R. Pope, Elaine Wenying Jin
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Patent number: 8988509Abstract: A pair of cameras having an overlapping field of view is aligned based on images captured by image sensors of the pair of cameras. A pixel shift is identified between the images. Based on the identified pixel shift, a calibration is applied to one or both of the pair of cameras. To determine the pixel shift, the camera applies correlation methods including edge matching. Calibrating the pair of cameras may include adjusting a read window on an image sensor. The pixel shift can also be used to determine a time lag, which can be used to synchronize subsequent image captures.Type: GrantFiled: March 20, 2014Date of Patent: March 24, 2015Assignee: GoPro, Inc.Inventors: Timothy Macmillan, Scott Patrick Campbell, David A. Newman, Yajie Sun
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Patent number: 8957999Abstract: A method of suppressing a dark halo in an imager includes the steps of: extracting an edge value from an image; determining a chroma zone associated with the edge value extracted from the image; and modifying the edge value based on the chroma zone associated with the extracted edge value. The modified edge value from the imager is then provided to a user. The step of determining the chroma zone includes determining a chroma value of Cr and Cb in a Y-Cr-Cb color space; and modifying the edge value includes multiplying the edge value by a predetermined gain value, k, depending on the chroma value of Cr and Cb. If the value of Cr is greater than zero, then the gain value k is set close to zero, in order to suppress the dark halo in the modified edge value. On the other hand, if the value of Cr is less than zero, then the gain value k is set close to one, in order to sharpen the modified edge value in the image.Type: GrantFiled: June 16, 2011Date of Patent: February 17, 2015Assignee: Aptina Imaging CorporationInventor: Yajie Sun
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Patent number: 8593548Abstract: A method of processing an image includes the steps of separating an image into multiple color channels, and dividing the image into multiple zones, in which each zone includes a sub-array of pixels. The method then calculates a color shading profile for each zone. The color shading profile is calculated as a linear function, typically a straight line. If a linear function cannot be determined for that zone, the method interprets a function for that zone using the nearest zone neighbors. The method corrects the color shading using the functions calculated for the respective zones.Type: GrantFiled: April 22, 2011Date of Patent: November 26, 2013Assignee: Aptina Imaging CorporationInventor: Yajie Sun
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Publication number: 20130251103Abstract: A method for use in medical imaging of a patient including, with the patient immobilized with respect to an imaging reference frame, acquiring first digital imaging information including a first region of interest using a first imaging modality; processing the first digital imaging information to identify a feature for analysis; and using a second imaging modality to acquire targeted second imaging information for a second region of interest, the second region of interest corresponding to a subset of the first region of interest, wherein the second region of interest includes the feature for analysis.Type: ApplicationFiled: November 30, 2012Publication date: September 26, 2013Applicant: Hologic, Inc.Inventors: Jasjit S. SURI, Yajie SUN, Roman JANER
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Publication number: 20130033582Abstract: A system of stereo imagers, including image processing units and methods of blurring an image, is presented. The image is received from an image sensor. For each pixel of the image, a depth filter component is determined based on a focal area of the image and a depth map associated with the image. For each pixel of the image, a trilateral filter is generated that includes a spatial filter component, a range filter component and the depth filter component. The respective trilateral filter is applied to corresponding pixels of the image to blur the image outside of the focal area. A refocus area or position may be determined by imaging geometry or may be selected manually via a user interface.Type: ApplicationFiled: January 31, 2012Publication date: February 7, 2013Applicant: APTINA IMAGING CORPORATIONInventors: YAJIE SUN, David R. Pope, Elaine Wenying Jin
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Patent number: 8326006Abstract: A method for use in medical imaging of a patient including, with the patient immobilized with respect to an imaging reference frame, acquiring first digital imaging information including a first region of interest using a first imaging modality; processing the first digital imaging information to identify a feature for analysis; and using a second imaging modality to acquire targeted second imaging information for a second region of interest, the second region of interest corresponding to a subset of the first region of interest, wherein the second region of interest includes the feature for analysis.Type: GrantFiled: July 7, 2005Date of Patent: December 4, 2012Inventors: Jasjit S. Suri, Yajie Sun, Roman Janer
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Publication number: 20120274817Abstract: A method of suppressing a dark halo in an imager includes the steps of: extracting an edge value from an image; determining a chroma zone associated with the edge value extracted from the image; and modifying the edge value based on the chroma zone associated with the extracted edge value. The modified edge value from the imager is then provided to a user. The step of determining the chroma zone includes determining a chroma value of Cr and Cb in a Y-Cr-Cb color space; and modifying the edge value includes multiplying the edge value by a predetermined gain value, k, depending on the chroma value of Cr and Cb. If the value of Cr is greater than zero, then the gain value k is set close to zero, in order to suppress the dark halo in the modified edge value. On the other hand, if the value of Cr is less than zero, then the gain value k is set close to one, in order to sharpen the modified edge value in the image.Type: ApplicationFiled: June 16, 2011Publication date: November 1, 2012Applicant: APTINA IMAGING CORPORATIONInventor: YAJIE SUN
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Publication number: 20120249828Abstract: A method of processing an image includes the steps of separating an image into multiple color channels, and dividing the image into multiple zones, in which each zone includes a sub-array of pixels. The method then calculates a color shading profile for each zone. The color shading profile is calculated as a linear function, typically a straight line. If a linear function cannot be determined for that zone, the method interprets a function for that zone using the nearest zone neighbors. The method corrects the color shading using the functions calculated for the respective zones.Type: ApplicationFiled: April 22, 2011Publication date: October 4, 2012Applicant: APTINA IMAGING CORPORATIONInventor: YAJIE SUN
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Patent number: 7899228Abstract: A method for image linear structure detection in medical imaging. The method includes locating microcalcification (mcc) candidate spots in a mammographic image; forming candidate clusters; assigning ranks to the candidate clusters; identifying linear structures in the neighborhood where the candidate clusters reside; and altering the ranks of the candidate clusters for which linear structures have been identified in the neighborhood.Type: GrantFiled: August 6, 2007Date of Patent: March 1, 2011Assignee: Carestream Health, Inc.Inventors: Shoupu Chen, Daoxian Heidi Zhang, Yajie Sun, Yong Chu, Lawrence A. Ray, Yang Zheng, Yue Shen