Patents by Inventor Gordon F. Wredenhagen
Gordon F. Wredenhagen 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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Patent number: 9300966Abstract: In a Phase Plane Correlation (PPC) process, using adaptive frequency domain filtering to aid in generating candidate motion vectors. It is determined when it is beneficial to pre-filter an input image, prior to a PPC process. This results in more reliable and consistent PPC surfaces than otherwise. The filter is applied in the frequency domain where time-domain convolution becomes a much more efficient component-wise multiplication with an in-place window. An energy measure of the high-frequency content in the computed Fourier surfaces gauges the degree of high frequency content in the image. First, the Fourier transform of the two images is computed. Then, the high-frequency content is estimated from the Fourier surfaces. A window function is computed as a function of the high-frequency energy. The window is applied to the Fourier surfaces. Then, the modified Fourier surfaces are fed into the PPC process.Type: GrantFiled: November 19, 2009Date of Patent: March 29, 2016Assignee: ATI Technologies ULCInventor: Gordon F. Wredenhagen
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Patent number: 8718366Abstract: Methods and apparatus for detecting moving text in video comprising receiving consecutive frames from a video stream, extracting a sequence of pixels from the consecutive frames, categorizing the pixels, thinning the pixels, correlating corresponding thinned pixels in the frames, identifying the peaks that are equal to or exceed a threshold, and performing further processing on the peaks to determine if the peaks contain moving text.Type: GrantFiled: April 1, 2009Date of Patent: May 6, 2014Assignee: ATI Technologies ULCInventor: Gordon F. Wredenhagen
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Patent number: 8417051Abstract: A system and method for emphasizing and/or de-emphasizing features in a digital image. In an embodiment of the invention, the image is processed by a series of filters, which decompose the image into a series of sub-bands. Each sub-band is then processed by an emphasis circuit. In an embodiment of the invention, the emphasis circuit is connected to an input representing a particular sub-band. Each filter, therefore, is connected to its own respective emphasis circuit. The result is a series of emphasis circuit outputs, which are then combined. The result of the combination is the processed image, containing one or more emphasized or deemphasized features. In an alternative embodiment of the invention, the sub-bands are combined in a weighted fashion. The sum of the weighted sub-bands is then applied to a single emphasis circuit. The output of the emphasis circuit, in this embodiment, is a processed image having one or more emphasized or deemphasized features.Type: GrantFiled: May 11, 2009Date of Patent: April 9, 2013Assignee: Broadcom CorporationInventor: Gordon F. Wredenhagen
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Patent number: 8233719Abstract: A method and apparatus of processing image data comprises correlating received image data. Image statistics are computed based upon the correlated image and eccentricity is estimated based upon the computed image statistics. An entropy metric of the correlated received image data is determined. An interpretation based upon the image statistics, estimated eccentricity, and entropy metric is performed and a report including the content of the processed image data is generated.Type: GrantFiled: December 20, 2007Date of Patent: July 31, 2012Assignee: ATI Technologies ULCInventor: Gordon F. Wredenhagen
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Patent number: 8086043Abstract: A method and apparatus that augments the traditional Phase Plane Correlation (PPC) approach incorporates image structure into the correlation process. In so doing, the energy in spurious peaks that can occur in the phase plane correlation surface are dramatically reduced.Type: GrantFiled: December 21, 2007Date of Patent: December 27, 2011Assignee: ATI Technologies ULCInventor: Gordon F. Wredenhagen
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Publication number: 20100254605Abstract: Methods and apparatus for detecting moving text in video comprising receiving consecutive frames from a video stream, extracting a sequence of pixels from the consecutive frames, categorizing the pixels, thinning the pixels, correlating corresponding thinned pixels in the frames, identifying the peaks that are equal to or exceed a threshold, and performing further processing on the peaks to determine if the peaks contain moving text.Type: ApplicationFiled: April 1, 2009Publication date: October 7, 2010Applicant: ATI Technologies ULCInventor: Gordon F. Wredenhagen
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Publication number: 20100166257Abstract: A method and apparatus for detecting semi-transparencies in video is disclosed.Type: ApplicationFiled: December 30, 2008Publication date: July 1, 2010Applicant: ATI Technologies ULCInventor: Gordon F. Wredenhagen
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Publication number: 20100150225Abstract: In a Phase Plane Correlation (PPC) process, using adaptive frequency domain filtering to aid in generating candidate motion vectors. It is determined when it is beneficial to pre-filter an input image, prior to a PPC process. This results in more reliable and consistent PPC surfaces than otherwise. The filter is applied in the frequency domain where time-domain convolution becomes a much more efficient component-wise multiplication with an in-place window. An energy measure of the high-frequency content in the computed Fourier surfaces gauges the degree of high frequency content in the image. First, the Fourier transform of the two images is computed. Then, the high-frequency content is estimated from the Fourier surfaces. A window function is computed as a function of the high-frequency energy. The window is applied to the Fourier surfaces. Then, the modified Fourier surfaces are fed into the PPC process.Type: ApplicationFiled: November 19, 2009Publication date: June 17, 2010Applicant: ATI Technologies ULCInventor: Gordon F. WREDENHAGEN
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Publication number: 20090279785Abstract: A system and method for emphasizing and/or de-emphasizing features in a digital image. In an embodiment of the invention, the image is processed by a series of filters, which decompose the image into a series of sub-bands. Each sub-band is then processed by an emphasis circuit. In an embodiment of the invention, the emphasis circuit is connected to an input representing a particular sub-band. Each filter, therefore, is connected to its own respective emphasis circuit. The result is a series of emphasis circuit outputs, which are then combined. The result of the combination is the processed image, containing one or more emphasized or deemphasized features. In an alternative embodiment of the invention, the sub-bands are combined in a weighted fashion. The sum of the weighted sub-bands is then applied to a single emphasis circuit. The output of the emphasis circuit, in this embodiment, is a processed image having one or more emphasized or deemphasized features.Type: ApplicationFiled: May 11, 2009Publication date: November 12, 2009Inventor: Gordon F. Wredenhagen
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Publication number: 20090167958Abstract: A method and apparatus that is able to favor keeping objects in motion intact is provided. Additionally a method and apparatus regularizing a motion vector field that has been previously determined by a traditional algorithm is provided. Finally, a mechanism is provided that allows for improving a contextual understanding of an object structure even when the group of pixels under consideration is much smaller than the object in motion.Type: ApplicationFiled: December 28, 2007Publication date: July 2, 2009Applicant: ATI TECHNOLOGIES ULCInventor: Gordon F. Wredenhagen
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Publication number: 20090161988Abstract: A method and apparatus that augments the traditional Phase Plane Correlation (PPC) approach incorporates image structure into the correlation process. In so doing, the energy in spurious peaks that can occur in the phase plane correlation surface are dramatically reduced.Type: ApplicationFiled: December 21, 2007Publication date: June 25, 2009Applicant: ATI TECHNOLOGIES ULCInventor: Gordon F. Wredenhagen
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Publication number: 20090161987Abstract: A method and apparatus of processing image data comprises correlating received image data. Image statistics are computed based upon the correlated image and eccentricity is estimated based upon the computed image statistics. An entropy metric of the correlated received image data is determined. An interpretation based upon the image statistics, estimated eccentricity, and entropy metric is performed and a report including the content of the processed image data is generated.Type: ApplicationFiled: December 20, 2007Publication date: June 25, 2009Applicant: ATI TECHNOLOGIES ULCInventor: Gordon F. Wredenhagen