Patents Assigned to THIAGARAJAR COLLEGE OF ENGINEERING
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Patent number: 9014440Abstract: A system and method for detecting a cyst from a dental radiographic image is provided. The system and method comprises comparing the radiographic image to a plurality of template images, calculating a cross correlation coefficient between a plurality of regions in the radiographic image and a corresponding plurality of regions in the template image, determining a cyst region in the radiographic image based on a value of the cross correlation coefficient and computing a severity level of the cyst.Type: GrantFiled: December 24, 2009Date of Patent: April 21, 2015Assignee: Thiagarajar College of EngineeringInventors: Banumathi Arumugam, Raju Srinivasan, Abhaikumar Varadhan
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Patent number: 8948462Abstract: Technologies are generally described for determining a texture of an object. In some examples, a method for determining a texture of an object includes receiving a two-dimensional image representative of a surface of the object, estimating a three-dimensional (3D) projection of the image, transforming the 3D projection into a frequency domain, projecting the 3D projection in the frequency domain onto a spherical co-ordinate system, and determining the texture of the surface by analyzing spectral signatures extracted from the 3D projection on the spherical co-ordinate system.Type: GrantFiled: March 28, 2014Date of Patent: February 3, 2015Assignee: Thiagarajar College of EngineeringInventors: Sathya Bama Balakrishnan, Raju Srinivasan, Abhaikumar Varadhan
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Patent number: 8862063Abstract: Methods and devices for phase shifting an RF signal for a base station antenna are provided. The device includes a transmission line that has a stationary ground plane coupled to the top of a substrate and a signal line on the bottom of the substrate. The signal line has an input port and an output port. The input port receives the RF signal with a certain phase and travels across the bottom of the substrate to the output port. The RF signal has a different phase at the output port because defected ground structures etched on the stationary ground plane shift the phase of the RF signal. In addition, the device includes a movable ground plane that may cover a portion of the defected ground structures, the substrate, and the stationary ground plane such that the moveable ground plane further adjusts the phase of the RF signal.Type: GrantFiled: December 10, 2012Date of Patent: October 14, 2014Assignee: Thiagarajar College of EngineeringInventors: V. Abhaikumar, S. Raju, S. Deepak Ram Prasath, R. Senthilkumar, P. Vasikaran
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Patent number: 8699785Abstract: Technologies are generally described for determining a texture of an object. In some examples, a method for determining a texture of an object includes receiving a two-dimensional image representative of a surface of the object, estimating a three-dimensional (3D) projection of the image, transforming the 3D projection into a frequency domain, projecting the 3D projection in the frequency domain onto a spherical co-ordinate system, and determining the texture of the surface by analyzing spectral signatures extracted from the 3D projection on the spherical co-ordinate system.Type: GrantFiled: November 2, 2010Date of Patent: April 15, 2014Assignee: Thiagarajar College of EngineeringInventors: Sathya Bama Balakrishnan, Raju Srinivasan, Abhaikumar Varadhan
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Patent number: 8670720Abstract: Methods and devices for phase shifting an RF signal for a base station antenna are provided. The device includes a transmission line that has a stationary ground plane coupled to the top of a substrate and a signal line on the bottom of the substrate. The signal line has an input port and an output port. The input port receives the RF signal with a certain phase and travels across the bottom of the substrate to the output port. The RF signal has a different phase at the output port because defected ground structures etched on the stationary ground plane shift the phase of the RF signal. In addition, the device includes a movable ground plane that may cover a portion of the defected ground structures, the substrate, and the stationary ground plane such that the moveable ground plane further adjusts the phase of the RF signal.Type: GrantFiled: December 10, 2012Date of Patent: March 11, 2014Assignee: Thiagarajar College of EngineeringInventors: Varadhan Abhaikumar, Seenivasan Raju, Subburaj Ramprasath Deepak Ram, Rajagopal Senthilkumar, Prabhakaran Vasikaran
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Publication number: 20130099873Abstract: Methods and devices for phase shifting an RF signal for a base station antenna are provided. The device includes a transmission line that has a stationary ground plane coupled to the top of a substrate and a signal line on the bottom of the substrate. The signal line has an input port and an output port. The input port receives the RF signal with a certain phase and travels across the bottom of the substrate to the output port. The RF signal has a different phase at the output port because defected ground structures etched on the stationary ground plane shift the phase of the RF signal. In addition, the device includes a movable ground plane that may cover a portion of the defected ground structures, the substrate, and the stationary ground plane such that the moveable ground plane further adjusts the phase of the RF signal.Type: ApplicationFiled: December 10, 2012Publication date: April 25, 2013Applicant: THIAGARAJAR COLLEGE OF ENGINEERINGInventor: Thiagarajar College of Engineering
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Publication number: 20130099877Abstract: Methods and devices for phase shifting an RF signal for a base station antenna are provided. The device includes a transmission line that has a stationary ground plane coupled to the top of a substrate and a signal line on the bottom of the substrate. The signal line has an input port and an output port. The input port receives the RF signal with a certain phase and travels across the bottom of the substrate to the output port. The RF signal has a different phase at the output port because defected ground structures etched on the stationary ground plane shift the phase of the RF signal. In addition, the device includes a movable ground plane that may cover a portion of the defected ground structures, the substrate, and the stationary ground plane such that the moveable ground plane further adjusts the phase of the RF signal.Type: ApplicationFiled: December 10, 2012Publication date: April 25, 2013Applicant: THIAGARAJAR COLLEGE OF ENGINEERINGInventor: Thiagarajar College of Engineering
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Publication number: 20120106830Abstract: Technologies are generally described for determining a texture of an object. In some examples, a method for determining a texture of an object includes receiving a two-dimensional image representative of a surface of the object, estimating a three-dimensional (3D) projection of the image, transforming the 3D projection into a frequency domain, projecting the 3D projection in the frequency domain onto a spherical co-ordinate system, and determining the texture of the surface by analyzing spectral signatures extracted from the 3D projection on the spherical co-ordinate system.Type: ApplicationFiled: November 2, 2010Publication date: May 3, 2012Applicant: THIAGARAJAR COLLEGE OF ENGINEERINGInventors: B. Sathya Bama, S. Raju, V. Abhai Kumar
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Publication number: 20110183624Abstract: Methods and devices for phase shifting an RF signal for a base station antenna are provided. The device includes a transmission line that has a stationary ground plane coupled to the top of a substrate and a signal line on the bottom of the substrate. The signal line has an input port and an output port. The input port receives the RF signal with a certain phase and travels across the bottom of the substrate to the output port. The RF signal has a different phase at the output port because defected ground structures etched on the stationary ground plane shift the phase of the RF signal. In addition, the device includes a movable ground plane that may cover a portion of the defected ground structures, the substrate, and the stationary ground plane such that the moveable ground plane further adjusts the phase of the RF signal.Type: ApplicationFiled: March 12, 2010Publication date: July 28, 2011Applicant: THIAGARAJAR COLLEGE OF ENGINEERINGInventors: Abhaikumar V., Raju S., Deepak Ram Prasath S., Senthilkumar R., Vasikaran P.
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Publication number: 20110110574Abstract: A system and method for detecting a cyst from a dental radiographic image is provided. The system and method comprises comparing the radiographic image to a plurality of template images, calculating a cross correlation coefficient between a plurality of regions in the radiographic image and a corresponding plurality of regions in the template image, determining a cyst region in the radiographic image based on a value of the cross correlation coefficient and computing a severity level of the cyst.Type: ApplicationFiled: December 24, 2009Publication date: May 12, 2011Applicant: THIAGARAJAR COLLEGE OF ENGINEERINGInventors: A. Banumathi, S. Raju, V. Abhaikumar
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Publication number: 20110110575Abstract: Briefly, in accordance with one aspect, a method for detecting caries on a tooth is provided. The method includes clustering image pixels of an edge-enhanced image of the tooth to identify enamel, dentine, pulp and caries layers of the tooth and determining a plurality of texture parameters for each of the identified enamel, dentine, pulp and caries layers. The method also includes comparing the plurality of texture parameters with reference parameters to detect caries on the tooth.Type: ApplicationFiled: December 24, 2009Publication date: May 12, 2011Applicant: THIAGARAJAR COLLEGE OF ENGINEERINGInventors: A. Banumathi, S. Raju, V. Abhaikumar