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37 results about "Cross modality" patented technology

Cross-modality translation is the process of converting from the affective, sensory, or evaluative perceptions of pain to a graded number, word, line, or color scale (e. However, it should be noted that many cross-modality equivalence classes have been demonstrated.

Imaging based symptomatic classification and cardiovascular stroke risk score estimation

Characterization of carotid atherosclerosis and classification of plaque into symptomatic or asymptomatic along with the risk score estimation are key steps necessary for allowing the vascular surgeons to decide if the patient has to definitely undergo risky treatment procedures that are needed to unblock the stenosis. This application describes a statistical (a) Computer Aided Diagnostic (CAD) technique for symptomatic versus asymptomatic plaque automated classification of carotid ultrasound images and (b) presents a cardiovascular stroke risk score computation. We demonstrate this for longitudinal Ultrasound, CT, MR modalities and extendable to 3D carotid Ultrasound. The on-line system consists of Atherosclerotic Wall Region estimation using AtheroEdge™ for longitudinal Ultrasound or Athero-CTView™ for CT or Athero-MRView from MR. This greyscale Wall Region is then fed to a feature extraction processor which computes: (a) Higher Order Spectra; (b) Discrete Wavelet Transform (DWT); (c) Texture and (d) Wall Variability. The output of the Feature Processor is fed to the Classifier which is trained off-line from the Database of similar Atherosclerotic Wall Region images. The off-line Classifier is trained from the significant features from (a) Higher Order Spectra; (b) Discrete Wavelet Transform (DWT); (c) Texture and (d) Wall Variability, selected using t-test. Symptomatic ground truth information about the training patients is drawn from cross modality imaging such as CT or MR or 3D ultrasound in the form of 0 or 1. Support Vector Machine (SVM) supervised classifier of varying kernel functions is used off-line for training. The Atheromatic™ system is also demonstrated for Radial Basis Probabilistic Neural Network (RBPNN), or Nearest Neighbor (KNN) classifier or Decision Trees (DT) Classifier for symptomatic versus asymptomatic plaque automated classification. The obtained training parameters are then used to evaluate the test set. The system also yields the cardiovascular stroke risk score value on the basis of the four set of wall features.
Owner:SURI JASJIT S

Cross-modal data discrete hash retrieval method based on similarity maintenance

The invention discloses a cross-modal data discrete hash retrieval method based on similarity preservation. The method comprises the following steps of establishing a cross-modal retrieval data set composed of samples containing two modalities, and dividing the cross-modal retrieval data set into a training set and a test set; establishing an objective function for keeping similarity between modalities and similarity in modalities, and solving the objective function through a discrete optimization method to obtain a hash code matrix; learning a Hash function of each mode according to the Hashcode matrix; calculating Hash codes of all samples in the training set and the test set by using a Hash function; wherein one modal test set serves as a query set and the other modal training set serves as a retrieval set, calculating the Hamming distance between the Hash codes of the samples in the query set and the Hash codes of the samples in the retrieval set, wherein the sequence serves as aretrieval result. According to the method, the similarity between modalities and the similarity in the modalities can be effectively kept, the discrete characteristics of the Hash codes are considered, a discrete optimization method is adopted for solving the objective function, and therefore the cross-modality retrieval accuracy is improved.
Owner:ZHEJIANG UNIV +1

Bridge modal parameter intelligent updating method based on cross-modal confidence criterion matrix

ActiveCN113159282AFull display of modal response informationEasy to identifyNeural architecturesNeural learning methodsCross modalityElement model
The invention discloses a bridge modal parameter intelligent updating method based on a cross-modal confidence criterion (CMAC) matrix, and the method comprises the steps: taking a CMAC matrix as a basis, combining an adaptive convolution operation layer and a full-connection classification layer to form a modal spectrum response intelligent extraction neural network, and carrying out the classification reconstruction of the CMAC matrix; extracting a bridge structure physical modal spectrum response interval; furthermore, establishing an agent model of bridge vibration data power spectral density and modal information intensity based on the initial modal spectral response interval and a finite element model modal parameter theoretical value, so that a maximum modal information spectral response interval is determined, and bridge structure modal parameter identification is carried out accordingly. According to the method, the CMAC matrix and the adaptive convolutional neural network are combined to carry out intelligent analysis and identification of the structural modal parameters, the network training efficiency is high, the response of the weak excitation modal can be well extracted, and the method can be applied to bridge structure health state monitoring to carry out automatic updating of the modal parameters.
Owner:SOUTHEAST UNIV
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