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254results about How to "Increase time cost" patented technology

Compressed sensing image reconstructing method based on prior model and 10 norms

The invention discloses a compressed sensing image reconstructing method based on a prior model and 10 norms, mainly used for solving the defects of poor visual effect and long operation time existing in image reconstruction in the prior art. In the technical scheme of the invention, a compressed sensing image reconstruction frame with 10 norms is optimized by utilizing a prior model; and the positioning of sparsity coefficient and solution of the sparsity coefficient value are achieved through two effective steps: step 1, establishing the prior model, and carrying out low frequency coefficient inverse wavelet transform so as to obtain an image with a fuzzy edge, determining the position of the edge by edge detection, and searching the position of wavelet high frequency subband sparsity coefficient through an immunization genetic algorithm by using the prior model of which the wavelet coefficient has inter-scale aggregation; and step 2, solving a corresponding high frequency subband by using an improved clone selective algorithm, and then carrying out the inverse wavelet transform so as to obtain a reconstructed image. Compared with the prior art, the method has the advantages of good visual effect and low calculation complexity, and can be used in the fields of image processing and computer visual.
Owner:XIDIAN UNIV

Camera shielding detection method

The invention relates to the technical field of digital image processing, in particular to a camera shielding detection method. The camera shielding detection method includes the steps of 1, building a camera resource configuration module; 2, enabling a monitoring center to judge whether a camera is in operation or not according to operation state information, and to acquire a current-frame digital image from the camera in the operation state; 3, performing image preprocessing; 4, building an image brightness background, smoothing the image to a smooth brightness distribution diagram by an average filtering method, and extracting possibly shielded sectors Si of the image by a dynamic threshold method; 5, subjecting the possibly shielded sectors Si to connected component analysis, setting a sector threshold value ST, selecting the possibly shielded sectors Si not less than the sector threshold value ST, and defining the selected possibly shielded sectors Si as high-probability shielded sectors S2; 6, computing shielded probability P of the high-probability shielded sectors S2; 7, judging the relation between the shielded probability P and preset shielded probability PT, if P>PT, judging the high-probability shielded sectors as final shielded sectors, and if not, judging the high-probability shielded sectors as unshielded sectors. The camera shielding detection method is high in detection efficiency.
Owner:DALIAN JIAYUN ELECTRONICS TECH CO LTD

Tamper-proof data storage method, device and system based on blockchain

The invention discloses a tamper-proof data storage method, device and system based on a block chain, and the method comprises the steps: storing original data as blocks, and enabling all blocks to belinked into the block chain; wherein original data is stored in the block body; wherein the block head comprises a version number, signature information, a random number set and a Merkle root; wherein the signature information is generated by encrypting a hash value generated by performing hash operation on a previous block; wherein the random number set comprises N elements, and the elements arerandom block version numbers or set values; and when the random number group element is the version number corresponding to the block, the leaf node of the Merkle root is the hash value of the corresponding block, otherwise, the leaf node of the Merkle root is the hash value of the set value. During data review, chain verification can be carried out through block signature information, and merkleroot verification can be carried out through merkle roots to verify whether the data is tampered or not. According to the method, whether the data is tampered or not is verified through the stored data, hardware does not need to be additionally added, the time cost for tampering the data is very high, and the credibility of data auditing can be effectively guaranteed.
Owner:NANJING NARI GROUP CORP +4

A new retail payment method and payment system for near-to-eye display equipment

ActiveCN109711827AThe payment method is convenientEliminate waiting time in lineInput/output for user-computer interactionCash registersPersonal accountSelf-service
The invention belongs to the technical field of payment, and discloses a new retail payment method and system for near-eye display equipment, and the method comprises the steps: obtaining a supermarket entering request of a user, and carrying out the retrieval comparison of the personal account information and identity information of the user with a user database; automatically identifying the consumption behavior of the user; enabling the background system server to judge whether the user satisfies a self-service settlement condition or not according to the personal credit score of the user and the data of the eye movement tracking module on the near-to-eye display equipment; acquiring biological recognition information of a user, and sending a payment result; carrying out anti-theft detection by utilizing a weighing detection mechanism of the weighing machine. The settlement and payment modes are more convenient, the queuing waiting time is completely eliminated, a complex and huge sensor monitoring system and additional intelligent shopping equipment are not needed, the anti-theft detection system is more efficient and accurate, the overall implementation cost of the system is lower, and the system conforms to the future intelligent development trend.
Owner:武汉市天蝎科技有限公司

Java exception propagation static structure extraction method

The invention discloses a Java exception propagation static structure extraction method. According to an exception type hierarchical relationship, based on a method calling relationship, an exception throwing and capturing relationship existing a Java exception propagation process is combined, thus the Java exception propagation static structure can be more completely extracted. In order to overcome the difficulty in extraction of a complex hierarchical structure to an exception propagation structure, the Java exception propagation static structure extraction method is used for fusing a system exception type with a user defined exception type to construct a relatively-complete exception type hierarchical structure tree; and on the basis of calling a dependency graph, the Java exception propagation static structure extraction method is used for constructing a software extension dependency graph by associating the exception throwing and capturing relationship with the exception type hierarchical structure. By using an exception type capturing point as an exception propagation structure search starting point, the Java exception propagation structure is extracted by adopting an extraction algorithm based on a depth-first search algorithm and the exception type hierarchical structure tree.
Owner:BEIHANG UNIV

Method and system for cleaning parallel corpus based on language model and translation model

The present invention belongs to the technical field of computer software, and discloses a method and a system for cleaning parallel corpora based on a language model and a translation model. A corpuspreprocessing is mainly used for processing a bilingual parallel corpus of multiple directions of the same language family, screening the parallel corpus by using the language model of a source language and a target language, and screening the corpus from the bilingual parallel corpus by using the translation model. According to the method and the system for cleaning parallel corpora based on thelanguage model and the translation model, the language model and the translation model are utilized to clean the large-scale bilingual corpus, and time and labor costs of cleaning the parallel corpusby using a heuristic rule are high, only when a problem is found can processing be carried out for a certain problem, and the problem that the intonation is not smooth and the translation is inaccurate cannot be solved on a large scale. However, the language model and the translation model can solve the problem that the use rule cannot be solved in a short time, time and labor costs are saved, the corpus can be cleaned, the corpus quality is improved, and the machine translation quality can be effectively improved.
Owner:GLOBAL TONE COMM TECH

Highway pavement diseases characteristic extracting method based on sparse resolution theory

The invention discloses a method for extracting road surface disease features based on the sparse decomposition theory and relates to the road surface disease detection technique, which solves the problems that the contour signal analysis technique based on structured light has insufficient feature extraction and unsatisfactory actual application effect and the like. The method comprises the following steps of: firstly, establishing different disease feature atom dictionary according to different disease features, taking position and scale as parameters which change in a different ranges, and normalizing the atoms, thus obtaining a complete disease feature atom dictionary; secondly, according to the signal spreading theory, selecting K atom pair signals from the complete disease feature atom dictionary to carry out K approximations, and then selecting an atom combination with a most sparse decomposition coefficient from the K atom combinations according to the sparse decomposition theory. The selection of the coefficient Ck of the disease feature should satisfy a sparse constraint condition which is as follows:* C 0 s. t f =*Ck Phi k; the disease feature can be expressed as: f (t) = fk + Sigma = Sigma Ck Phi k (t)+ Sigma, wherein k = 0, 1, 2, and other integers; and Sigma is an approximate error. The method for extracting road surface disease features is used for detecting road surface disease features, such as crackles, tracing ruts, pits or earth bulges, and the like.
Owner:HARBIN INST OF TECH

Method based on transmission electron microscope common sample table for loading two samples at same time

The invention belongs to the technical field of transmission electron microscopes and discloses a method based on a transmission electron microscope common sample table for loading two samples at thesame time. The method includes: according to different characteristics of pre-test materials, selecting a proper TEM supporting film carrying net, and dispersing a powder sample onto the supporting film carrying net according to a conventional powder sample preparation method for testing; using a blade to cut the carrying film with a prepared sample in halves; utilizing a self-made TEM sample transfer tool to respectively transfer two samples obtained by cutting to left and right sides or upper and lower sides of the sample table, and recording respective corresponding positions; putting the sample table into a TEM, and testing after vacuum reaches testing requirements. The number of sample changing times of the TEM is reduced effectively, time consumption for sample changing and vacuum waiting is reduced, testing efficiency is improved, and testing cost is lowered; the method is good for stability of the sample in an electron microscope, thereby being conducive to acquiring of high-resolution images, and also good for stable running and maintaining of instrument equipment.
Owner:CHONGQING UNIV

In-situ chip fixing structure of transmission electron microscope sample holder

The invention discloses an in-situ chip fixing structure of a transmission electron microscope sample holder. The in-situ chip fixing structure comprises a handheld handle, a sample holder main body, a sample holder head and a vacuum electrical connector, wherein a fixing slot for installing an in-situ chip is formed in the front part of the sample holder head; a non-magnetic pressure plate for fixing the in-situ chip is arranged at the front end part of the fixing slot; a mounting groove is formed in the middle part of the sample holder head; a rotational conductive needle mounting base is arranged in the mounting groove; a non-magnetic conductive needle connected with the vacuum electrical connector is arranged on the conductive needle mounting base; the end part of the non-magnetic conductive needle is connected with an electric contact on the in-situ chip; the tail end of the sample holder head is detachably connected with the sample holder main body through threads; when the in-situ chips with different types are used, the sample holder heads with different sizes only need to be changed, and the whole sample holder does not need to be changed, so that time cost and economic cost of experiments are greatly reduced.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI

Anchoring agent feeding device and using method

The invention discloses an anchoring agent feeding device and a using method. The anchoring agent feeding device is applicable to geotechnical engineering, the portion under a coal mine well and tunnel engineering. The device comprises an anchoring agent connector and an anchoring agent injector. The anchoring agent connector is composed of an upper cavity, a lower cavity, a membrane and a centering stabilizing structure; the upper cavity and the lower cavity are of membrane-screen-shaped cylindrical structures, and the diameter of the upper cavity and the lower cavity is matched with that ofanchoring agents; the centering stabilizing structure is of a feather-shaped structure which is fixed to the outer sides of the upper cavity and the lower cavity and diverges outwards, and the diameter of the centering stabilizing structure is matched with that of the anchoring agent injector. The anchoring agent injector is composed of a C-shaped pipe body, an outer thread and an inner thread. The anchoring agent injector is put into an anchor rod cringle, and the multiple anchoring agents are connected through the anchoring agent connector and are fed into the bottom of a mounting hole withthe anchoring agent injector. The device is applicable to installing anchor cables of multiple specifications, and the problems that when the multiple anchoring agents are fed into the mounting hole,the anchoring agents are turned, misaligned or clamped, and the anchoring agents do not coincide with the hole center are solved.
Owner:CHINA UNIV OF MINING & TECH

Method and apparatus for deblocking account

ActiveCN106330889AImprove securityImprove the effect of restricting malicious accountsTransmissionTime costComputer science
The invention discloses a method and apparatus for deblocking an account, and belongs to the technical field of networks. The method comprises the following steps: receiving a deblocking request, wherein the deblocking request at least comprises a to-be-deblocked account and a target account used for carrying out auxiliary deblocking; generating an auxiliary deblocking request of the to-be-deblocked account according to the deblocking request; providing the auxiliary deblocking request for the target account; when a confirmation message of the target account to the auxiliary deblocking request is received, judging whether the target account is a normal account; and if the target account is the normal account, deblocking the to-be-deblocked account. In the method and apparatus disclosed by the invention, the to-be-deblocked account requires the target account to carry out auxiliary deblocking, and the target account should be the normal account, then the to-be-deblocked account can be successfully deblocked, a criminal requires a relatively high time cost to cultivate a normal account, thereby being not easy to implement, and in order to not expose the identity, the criminal will not use his own normal account to carry out auxiliary verification on his malicious account, so that the effect of inhibiting the malicious account can be improved by the method, and thus the network security is higher.
Owner:TENCENT TECH (SHENZHEN) CO LTD
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