Patents Assigned to Ningbo University
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Publication number: 20150093016Abstract: A digital watermarking based method for objectively evaluating quality of stereo image includes: at transmitting terminal, extracting characteristics of the left-view image and the right-view image of an undistorted stereo image in DCT domain and embedding digital watermarking obtained by processing quantization coding on the characteristics into the DCT domain; at a receiving terminal, detecting the digital watermarking embedded in the distorted stereo image and processing decoding and inverse quantization to extract the embedded characteristics of the left-view image and the right-view image of the stereo image, obtaining a stereo perception value and a view quality value of the distorted stereo image according to the embedded characteristics, and finally obtaining an objective quality score of the distorted stereo image utilizing a support vector regression model.Type: ApplicationFiled: March 17, 2014Publication date: April 2, 2015Applicant: Ningbo UniversityInventors: Gangyi Jiang, Wujie Zhou, Mei Yu, Feng Shao, Zongju Peng, Fen Chen, Xiaodong Wang, Fucui Li
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Patent number: 8953873Abstract: A method for objectively evaluating quality of a stereo image is provided. The method obtains a cyclopean image of a stereo image formed in the human visual system by simulating a process that the human visual system deals with the stereo image. The cyclopean image includes three areas: an occlusion area, a binocular fusion area and a binocular suppression area. Representing characteristics of the image according to the singular value of the image has a strong stability. According characteristics of different areas of the human visual system while dealing with the cyclopean image, the distortion degree of the cyclopean image corresponding to the testing stereo image is presented by the singular value distance between cyclopean images respectively corresponding to the testing stereo image and the reference stereo image, in such a manner that an overall visual quality of the testing stereo image is finally evaluated.Type: GrantFiled: February 24, 2013Date of Patent: February 10, 2015Assignee: Ningbo UniversityInventors: Gangyi Jiang, Junming Zhou, Mei Yu, Fucui Li, Zongju Peng, Feng Shao
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Patent number: 8937493Abstract: A ternary T arithmetic circuit, including: a logic 0 gate circuit, a logic 1 gate circuit, and a logic 2 gate circuit. The logic 0 gate circuit includes: a first PMOS, a second PMOS, a third PMOS, a first NMOS, a second NMOS, a third NMOS, a fourth NMOS, and a fifth NMOS. The logic 2 gate circuit includes: a fourth PMOS, a fifth PMOS, a sixth NMOS, a seventh NMOS, and an eighth NMOS. The logic 1 gate circuit includes: a sixth PMOS, a seventh PMOS, a ninth NMOS, a tenth NMOS, an eleventh NMOS, and a twelfth NMOS.Type: GrantFiled: March 20, 2014Date of Patent: January 20, 2015Assignee: Ningbo UniversityInventors: Pengjun Wang, Xuesong Zheng, Qiankun Yang
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Patent number: 8912817Abstract: A reconfigurable multi-port physical unclonable functions (RM-PUFs) circuit, including: an input signal interface, a first control circuit module, at least two RM-PUFs circuit units, and an output signal interface. Each RM-PUFs circuit unit includes a second control circuit module, an input module, an output module, and a deviation generation module. The input signal interface is connected to the first control circuit module, the first control circuit module is connected to the RM-PUFs circuit units, and the RM-PUFs circuit units are connected to the output signal interface.Type: GrantFiled: March 18, 2014Date of Patent: December 16, 2014Assignee: Ningbo UniversityInventors: Pengjun Wang, Yuejun Zhang, Zhidi Jiang, Jianrui Li
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Patent number: 8913848Abstract: A microscopic image fusion method based on region growing judges the fuzzy degree of the microscopic image and determines the fuzzy seed block by evaluating the definition of every image block in the microscopic image. Then, the fuzzy region and clear region are exactly segmented by region growing and are marked. Finally, a clear and high-quality microscopic image, fused by a plurality of microscopic images, is obtained. Due to the combination of the definition evaluation of the microscopic image, and segmentation of the fuzzy region and clear region by region growing, the fusion results of the microscopic image of the present invention show great advantages at the subjective human perception and the objective evaluation. Furthermore, the present invention has simple calculation and stable result, is easy to be implemented and adapted for fusing the digital optical microscopic images which are shot by shallow depth of field.Type: GrantFiled: February 24, 2013Date of Patent: December 16, 2014Assignee: Ningbo UniversityInventors: Gangyi Jiang, Cuixia Bai, Mei Yu, Yigang Wang, Zongju Peng, Feng Shao
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Publication number: 20140266296Abstract: A reconfigurable multi-port physical unclonable functions (RM-PUFs) circuit, including: an input signal interface, a first control circuit module, at least two RM-PUFs circuit units, and an output signal interface. Each RM-PUFs circuit unit includes a second control circuit module, an input module, an output module, and a deviation generation module. The input signal interface is connected to the first control circuit module, the first control circuit module is connected to the RM-PUFs circuit units, and the RM-PUFs circuit units are connected to the output signal interface.Type: ApplicationFiled: March 18, 2014Publication date: September 18, 2014Applicant: Ningbo UniversityInventors: Pengjun WANG, Yuejun ZHANG, Zhidi JIANG, Jianrui LI
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Publication number: 20140169661Abstract: A method for color correction of a pair of colorful stereo microscope images is provided, which transmits the color information of the foreground areas and the background area of the reference image to the aberrated image separately for avoiding transmission error of the color information of the varied areas of the pair of the images, thus sufficiently improves the accuracy of the color correction, reduces the difference between the color of the reference image and the color of the aberrated image, and well prepares for the stereo matching of the pair of colorful stereo microscope images as well as for the three-dimensional reconstruction and three-dimensional measurement; on the other hand, during the correction, the correcting procedure is provided automatically without manual work.Type: ApplicationFiled: September 18, 2013Publication date: June 19, 2014Applicant: Ningbo UniversityInventors: Gangyi Jiang, Xiangjun Liu, Mei Yu, Feng Shao, Zongju Peng, Yigang Wang
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Publication number: 20140064604Abstract: A method for objectively evaluating quality of a stereo image is provided. The method obtains a cyclopean image of a stereo image formed in the human visual system by simulating a process that the human visual system deals with the stereo image. The cyclopean image includes three areas: an occlusion area, a binocular fusion area and a binocular suppression area. Representing characteristics of the image according to the singular value of the image has a strong stability. According characteristics of different areas of the human visual system while dealing with the cyclopean image, the distortion degree of the cyclopean image corresponding to the testing stereo image is presented by the singular value distance between cyclopean images respectively corresponding to the testing stereo image and the reference stereo image, in such a manner that an overall visual quality of the testing stereo image is finally evaluated.Type: ApplicationFiled: February 24, 2013Publication date: March 6, 2014Applicant: Ningbo UniversityInventors: Gangyi Jiang, Junming Zhou, Mei Yu, Fucui Li, Zongju Peng, Feng Shao
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Publication number: 20140029000Abstract: A method for detecting a parfocality of a zoom-stereo microscope includes: acquiring four highest definitions corresponding to a plurality of images with a cooperation of four definition judging functions, acquiring a relatively clearest position according to the four highest definitions, comparing a definition in the relatively clearest position with a definition in a parfocal position to judge whether the relatively clearest position is the parfocal position, then adjusting a magnification of the zoom-stereo microscope to acquire the parfocal positions at a finite number of the discrete magnifications, and finally fitting a parfocal curve at the continuous magnifications. The method according to the present invention implements a parfocality detection of the stereo microscope automatically and effectively and increases a productivity, and has a high detecting precision. In addition, the method according to the present invention has a good robustness, so that users needn't intervene and adjust frequently.Type: ApplicationFiled: April 9, 2013Publication date: January 30, 2014Applicant: Ningbo UniversityInventors: Gangyi Jiang, Yigang Wang, Mei Yu, Zongju Peng, Feng Shao
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Patent number: 8575950Abstract: A resistance measuring apparatus which includes a variable voltage source, a signal display circuit, a bridge consisting of a first standard resistor, a second standard resistor, an adjustable resistor and the unknown resistor, a bridge balance display circuit and a dynamic voltage display circuit alternatively connected within the bridge. The resistance measuring apparatus is adapted to measure static resistance and dynamic resistance variation of an unknown resistor in the case of external environment having changed dramatically.Type: GrantFiled: October 29, 2010Date of Patent: November 5, 2013Assignee: Ningbo UniversityInventors: Jiankang Chen, Jintao Lei, Minghua Zhang
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Patent number: 8306178Abstract: The present invention discloses a vMOS based multi-valued counter unit. The counter unit includes a vMOS source follower and at least a control gate connected the vMOS source follower. The control gate includes a first dual-value D flip-flop, a second dual-value D flip-flop, an AND gate, and an OR gate. The present invention utilizes the vMOS to replace the complicated threshold value operations of the multi-value logic. The current invention implements the true multi-value logic and a multi-base multi-value counter by increasing the number of the dual-value D flip-flop, and connecting the dual-value D flip-flop to the input control gate of the vMOS follower. The present invention applies the asynchronous carry-over concept to implement the multi-digit multi-value counter, and it also has been verified by the simulation of P Simulation Program with Integrated Circuit Emphasis (SPICE).Type: GrantFiled: June 5, 2012Date of Patent: November 6, 2012Assignee: Ningbo UniversityInventors: Peng Jun Wang, Yue Jun Zhang
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Patent number: 8218714Abstract: The present invention discloses a neuron MOS based multi-valued counter unit. The counter unit includes a neuron MOS source follower and at least a control gate connected the neuron MOS source follower. The control gate includes a first dual-value D flip-flop, a second dual-value D flip-flop, an AND gate, and an OR gate. The present invention utilizes the neuron MOS to replace the complicated threshold value operations of the multi-value logic. The current invention implements the true multi-value logic and a multi-base multi-value counter by increasing the number of the dual-value D flip-flop, and connecting the dual-value D flip-flop to the input control gate of the neuron MOS follower. Comparing to the conventional multi-value counter, the present invention reduces the necessary components in constructing the counter, and it also reduces the cost and power consumption.Type: GrantFiled: December 30, 2010Date of Patent: July 10, 2012Assignee: Ningbo UniversityInventors: Peng Jun Wang, Yue Jun Zhang