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74results about How to "Eliminate redundant data" patented technology

Rough-set-based data fusion method for wireless multimedia sensor network

The invention discloses a rough-set-based data fusion method for a wireless multimedia sensor network. The wireless multimedia sensor network can be flexibly deployed in an area of interest of a user to sense richer multimedia information such as audios and videos. However, power is supplied to nodes of the wireless multimedia sensor network by batteries, and the hardware power consumption of the nodes for acquiring and transmitting the multimedia information is far higher than that of the conventional nodes, so that how to save the energy of the nodes to maximally prolong the life cycle of the network becomes one of main difficulties and challenges for the design and the implementation of the wireless multimedia sensor network. For such a problem, the invention provides a rough-set-based data fusion scheme for the wireless multimedia sensor network. According to the scheme, an optimal network topology structure is constructed, cluster head nodes are selected according to certain rules, and a data fusion tree is constructed among the cluster head nodes, so that acquired information can be forwarded along an optimal fusion path to reduce the energy consumption of the nodes in data transmission; and redundancy is eliminated by using an indiscernibility relation of a rough set theory to obtain reduced information, the reduced information is more accurate, and the data volume of the reduced information is greatly reduced compared with a raw data volume, so that the energy of the nodes is further saved, and the life cycle of the whole network is prolonged.
Owner:NANJING UNIV OF POSTS & TELECOMM

Novel multi-view video fractal coding, compressing and decompressing method

The invention belongs to the field of three-dimensional (3D) video coding technologies and provides a novel multi-view video fractal coding, compressing and decompressing method. According to the method, mass data of a multi-view 3D video is efficiently compressed so as to be stored and transmitted; in a coding process, the time and space combined prediction is realized, and a video compressing method in which quick disparity estimation and center-biased pentagonal motion estimation/prediction are combined with fractal coding is provided, so that the data redundancy is effectively reduced; a five-view video is taken as an example, K, L, C, R and S sequentially represent a video view point respectively, a prediction structure of C to L to K and C to R to S is provided, namely that both the view point R and the view point L are predicted by using the view point C and the view point S and the view point K are respectively predicted by using the view point R and the view point L, and start frames of the five view points are all frames I; and view point decoding sequences are same, and the blocking effect is removed by adopting a loop filter. The method has the advantages that under the conditions that better video decoding quality is obtained, the coding rate and compression ratio are greatly increased, the operational complexity is reduced, and a foundation for real-time application of multi-view video coding is laid.
Owner:海宁经开产业园区开发建设有限公司

Multi-viewpoint video fractal coding compressing and uncompressing method based on objects

The invention provides a multi-viewpoint video fractal coding compressing and uncompressing method based on objects and belongs to the technical field of three-dimensional video coding. A large amount of data of a multi-viewpoint three-dimensional video is compressed efficiently to be stored and transmitted. In a coding process, an interested object in a video is obtained through an automatic partition method and compressed and coded through fast disparity estimation and a method of combining pentagon motion estimation forecast and fractal codes, and data redundancy is effectively reduced. A forecast structure K-L-C-R-S specific to a video of five viewpoints of K, L, C, R and S is provided, namely viewpoints R and L are forecasted through a viewpoint C, the viewpoints S and K are forecasted through the viewpoints R and L respectively, and initial frames of the five viewpoints all use I frame. Decoding viewpoint sequences are the same, and loop filtering is used for removing a blocking effect. Under the condition that a good video decoding quality is obtained, coding speed and compression ratio are greatly increased, high flexibility is obtained, and a foundation is laid for real-time application for multi-viewpoint video coding.
Owner:南京合检兴智能科技有限公司 +2

Image classification method based on direction gradient histogram in combination with pseudo-reverse learning training stack self-encoder

The invention discloses an image classification method based on the direction gradient histogram in combination with a pseudo-reverse learning training stack self-encoder. The method comprises steps that (1), the direction gradient histogram (HOG) is utilized to extract image gradient characteristics, the image directional diagram is calculated, and an HOG operator is utilized to count directionalcharacteristics of some overlapped local regions to acquire HOG characteristics of images. Parameters of different HOG operators are set to acquire several HOG characteristics, and these characteristics are fused into high-dimensional characteristic vectors; (2), the pseudo-inverse learning algorithm is utilized to train a stack self-encoder (PILAE), and the fused high-dimensional characteristicsof the previous step are put into the PILAE to continue learning characteristics; and (3) the characteristics learned in the PILAE are put into a classifier for classification. The two-dimensional information of the images can be extracted by the HOG. The pseudo-reverse learning algorithm is a non-iterative method for training multi-layer feedforward neural networks. The method is advantaged in that the proposed model has the better training time than other models, most hyperparameters are determined by the input data and the network structure, and manual setting is not necessary.
Owner:BEIJING NORMAL UNIVERSITY

Hypernym aggregation method and apparatus

The present invention relates to the information processing technology, and in particular, to a hypernym aggregation method and apparatus, in order to improve the accuracy of hypernym aggregation. Themethod comprises that: a terminal device calculates the word vector similarity between the hypernyms according to the word vectors contained in each hypernym, calculates the entity type similarity between the hypernyms according to the entity types associated with the entities corresponding to each hypernym, and aggregates each hypernym with the word vector similarity reaching the first preset threshold and the entity type similarity reaching the second preset threshold. Thus, according to the technical scheme of the present invention, the short text such as the hypernym can be effectively processed, so that not only text key information contained in the hypernym can be effectively excavated, but also the type characteristics of the hypernym can be accurately described; and at the same time, the complicated workload of the artificial design of the characteristics can be avoided, and the generalization ability of the model can be enhanced, so that the invalid hypernym can be effectively identified, redundant data in the hypernym can be removed, and the accuracy of the hypernym aggregation can be significantly improved.
Owner:TENCENT TECH (SHENZHEN) CO LTD

An object-based multi-view video fractal coding compression and decompression method

The invention provides a multi-viewpoint video fractal coding compressing and uncompressing method based on objects and belongs to the technical field of three-dimensional video coding. A large amount of data of a multi-viewpoint three-dimensional video is compressed efficiently to be stored and transmitted. In a coding process, an interested object in a video is obtained through an automatic partition method and compressed and coded through fast disparity estimation and a method of combining pentagon motion estimation forecast and fractal codes, and data redundancy is effectively reduced. A forecast structure K-L-C-R-S specific to a video of five viewpoints of K, L, C, R and S is provided, namely viewpoints R and L are forecasted through a viewpoint C, the viewpoints S and K are forecasted through the viewpoints R and L respectively, and initial frames of the five viewpoints all use I frame. Decoding viewpoint sequences are the same, and loop filtering is used for removing a blocking effect. Under the condition that a good video decoding quality is obtained, coding speed and compression ratio are greatly increased, high flexibility is obtained, and a foundation is laid for real-time application for multi-viewpoint video coding.
Owner:南京合检兴智能科技有限公司 +2
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