Patents by Inventor Timothy John Wark
Timothy John Wark 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: 9794730Abstract: This invention concerns remote sensor networks, and particularly energy management for wireless sensor networks. In a first aspect the invention is a wireless sensor node specified to operate for a given lifetime, including an onboard computer system and a set of one or more associated sensors. The computer system operates to periodically sample data from each sensor of the set of associated sensors, and to store a multi-state model representing one or more phenomena described by the collected data. And, the computer system operates to calculate a value associated with movement of the phenomena between the states of the multi-state model, and to adjust the rate of sampling of one or more of the set of associated sensors depending on the calculated value. In other aspects the invention is a network of sensor nodes and a method of operation.Type: GrantFiled: November 11, 2015Date of Patent: October 17, 2017Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: Timothy John Wark, Raja Jurdak
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Patent number: 8838452Abstract: A method (400) and system (200) for classifying a audio signal are described. The method (400) operates by first receiving a sequence of audio frame feature data, each of the frame feature data characterising an audio frame along the audio segment. In response to receipt of each of the audio frame feature data, statistical data characterising the audio segment is updated with the received frame feature data. The received frame feature data is then discarded. A preliminary classification for the audio segment may be determined from the statistical data. Upon receipt of a notification of an end boundary of the audio segment, the audio segment is classified (410) based on the statistical data.Type: GrantFiled: June 6, 2005Date of Patent: September 16, 2014Assignee: Canon Kabushiki KaishaInventors: Reuben Kan, Dmitri Katchalov, Muhammad Majid, George Politis, Timothy John Wark
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Patent number: 7991224Abstract: A method (100), an apparatus, and a computer program product for automatically producing a compact representation of a colour document are disclosed. In the method, a digital image of a colour-document page is segmented (110) into connected components in one-pass, block raster order. The digital image of the page is partitioned into foreground and background images using layout analysis (120) based on compact, connected-component statistics of the whole page. At least one portion of the background image where at least one portion of the foreground image obscures the background image is inpainting (520) in one-pass block raster order. The foreground and background images are combined (130) to form a compact document. A method, an apparatus, and a computer program product for segmenting a digital image comprising a plurality of pixels are also disclosed.Type: GrantFiled: December 20, 2005Date of Patent: August 2, 2011Assignee: Canon Kabushiki KaishaInventors: James Philip Andrew, James Austin Besley, Steven Richard Irrgang, Yu-Ling Chen, Eric Wai-Shing Chong, Michael Jan Lawther, Timothy John Wark
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Patent number: 7586647Abstract: Methods, computer program products and apparatuses are disclosed for processing images to detect and/or remove halftone. In one aspect, a portion of an image comprising a plurality of color channels is selected for processing (210), a frequency domain representation of the selected portion is generated for each color channel (220), data relating to predetermined regions in the frequency domain representations is processed (230), and halftone present in the selected portion is detected based on a result of the processing the data (240).Type: GrantFiled: July 6, 2005Date of Patent: September 8, 2009Assignee: Canon Kabushiki KaishaInventors: Timothy John Wark, James Austin Besley, James Philip Andrew
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Publication number: 20090006102Abstract: A method (400) and system (200) for classifying a audio signal are described. The method (400) operates by first receiving a sequence of audio frame feature data, each of the frame feature data characterising an audio frame along the audio segment. In response to receipt of each of the audio frame feature data, statistical data characterising the audio segment is updated with the received frame feature data. The received frame feature data is then discarded. A preliminary classification for the audio segment may be determined from the statistical data. Upon receipt of a notification of an end boundary of the audio segment, the audio segment is classified (410) based on the statistical data.Type: ApplicationFiled: June 6, 2005Publication date: January 1, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Reuben Kan, Dmitri Katchalov, Muhammad Majid, George Politis, Timothy John Wark
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Publication number: 20080123945Abstract: A method (100), an apparatus, and a computer program product for automatically producing a compact representation of a colour document are disclosed. In the method, a digital image of a colour-document page is segmented (110) into connected components in one-pass, block raster order. The digital image of the page is partitioned into foreground and background images using layout analysis (120) based on compact, connected-component statistics of the whole page. At least one portion of the background image where at least one portion of the foreground image obscures the background image is inpainting (520) in one-pass block raster order. The foreground and background images are combined (130) to form a compact document. A method, an apparatus, and a computer program product for segmenting a digital image comprising a plurality of pixels are also disclosed.Type: ApplicationFiled: December 20, 2005Publication date: May 29, 2008Applicant: CANON KABUSHIKI KAISHAInventors: James Philip Andrew, James Austin Besley, Steven Richard Irrgang, Yu-Ling Chen, Eric Wai-Shing Chong, Michael Jan Lawther, Timothy John Wark
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Patent number: 7263485Abstract: A method (200) and apparatus (100) for classifying a homogeneous audio segment are disclosed. The homogeneous audio comprises a sequence of audio samples (x(n)). The method (200) starts by forming a sequence of frames (701-704) along the sequence of audio samples (x(n)), each frame (701-704) comprising a plurality of the audio samples (x(n)). The homogeneous audio segment is next divided (206) into a plurality of audio clips (711-714), with each audio clip being associated with a plurality of the frames (701-704). The method (200) then extracts (208) at least one frame feature for each clip (711-714). A clip feature vector (f) is next extracted from frame features of frames associated with the audio clip (711-714). Finally the segment is classified based on a continuous function during the distribution of the clip feature vectors (f).Type: GrantFiled: May 28, 2003Date of Patent: August 28, 2007Assignee: Canon Kabushiki KaishaInventor: Timothy John Wark
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Patent number: 7243062Abstract: A method (200) and apparatus (100) for segmenting a sequence of audio samples into homogeneous segments (550 and 555) are disclosed. The method (200) forms a sequence of frames (701 to 704) along the sequence of audio samples, and extracts, for each frame, a data feature. The data features form a sequence of data features. Transition points in the sequence of data features are thin detected by applying the Bayesian Information Criterion to the sequence of data features. The transition points define the homogeneous segments (550 and 555). Preferably the data feature is single-dimensional and a leptokurtic distribution is used as an event model in the Bayesian Information Criterion.Type: GrantFiled: October 25, 2002Date of Patent: July 10, 2007Assignee: Canon Kabushiki KaishaInventor: Timothy John Wark
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Publication number: 20030231775Abstract: A method (200) and apparatus (100) for classifying a homogeneous audio segment are disclosed. The homogeneous audio comprises a sequence of audio samples (x(n)). The method (200) starts by forming a sequence of frames (701-704) along the sequence of audio samples (x(n)), each frame (701-704) comprising a plurality of the audio samples (x(n)). The homogeneous audio segment is next divided (206) into a plurality of audio clips (711-714), with each audio clip being associated with a plurality of the frames (701-704). The method (200) then extracts (208) at least one frame feature for each clip (711-714). A clip feature vector (f) is next extracted from frame features of frames associated with the audio clip (711-714). Finally the segment is classified based on a continuous function defining the distribution of the clip feature vectors (f).Type: ApplicationFiled: May 28, 2003Publication date: December 18, 2003Applicant: CANON KABUSHIKI KAISHAInventor: Timothy John Wark
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Publication number: 20030097269Abstract: A method (200) and apparatus (100) for segmenting a sequence of audio samples into homogeneous segments (550 and 555) are disclosed. The method (200) forms a sequence of frames (701 to 704) along the sequence of audio samples, and extracts, for each frame, a data feature. The data features form a sequence of data features. Transition points in the sequence of data features are thin detected by applying the Bayesian Information Criterion to the sequence of data features. The transition points define the homogeneous segments (550 and 555). Preferably the data feature is single-dimensional and a leptokurtic distribution is used as an event model in the Bayesian Information Criterion.Type: ApplicationFiled: October 25, 2002Publication date: May 22, 2003Applicant: Canon Kabushiki KaishaInventor: Timothy John Wark