Abstract: Disclosed is a pentamethine cyanine dye of formula (I) and a method of producing the same, where the dye is suitable as a fluorescent material for the STORM and SOFI super-resolution imaging.

Abstract: Disclosed is a blind authentication method for a frequency selective fading channel based on belief propagation. The method includes: transmitting carrier signals to a frequency selective fading channel with multiple paths, where each carrier signal includes an authentication signal, a pilot signal and an information signal performing BKIC processing on a carrier signal in each path to obtain a target signal, and performing differential signal processing on the target signal to obtain a target authentication signal, obtaining a reference signal based on a key and the pilot signal in each path performing the differential signal processing on the reference signal to obtain a reference authentication signal, and calculating a correlation between the target authentication signal and the reference authentication signal to obtain a test statistic; and comparing the test statistic with a prescribed threshold to determine whether the carrier signal path can pass authentication.

Abstract: Disclosed are a fluorescent dye, a preparation method and an application thereof. The fluorescent dye has a structure of formula (I), where X and Y are independently selected from O, S, C(CH3)2 and NR6; R2 and R3 are independently hydrogen or a functional group; R1, R4, R5 and R6 are independently selected from functional groups; and Z? is a negative ion. The fluorescent dye has an ability to permeate the living cell membrane, so that it can be used in the fluorescence imaging of living cell microstructures, and can also be used in the STED super-resolution fluorescence imaging and laser scanning confocal microscopy of live cells.

Abstract: The present invention provides a concrete protective agent and a preparation method thereof, and a concrete protective film and a preparation method thereof. The concrete protective agent provided in the present invention includes the following components: water, oxalic acid, a defoaming agent, and a film-forming agent. When the concrete protective agent provided in the present invention is used for concrete protection, oxalic acid in the protective agent can react with calcium ions in concrete for in situ generation of calcium oxalate monohydrate inside and on a surface of concrete to obtain a protective film with strong adhesion to concrete. The film-forming agent in the protective agent is used as a template to adjust and control growth of calcium oxalate crystals, so as to improve waterproof performance and corrosion resistance to sulfate and chloride ions of the protective film. Preparation methods provided in the present invention are simple and practical and are suitable for mass production.

Abstract: Disclosed is a blind authentication method for a frequency selective fading channel based on a smoothing technique.

Abstract: Provided is a physical layer blind authentication method for a time-varying fading channel based on belief propagation. The method includes that: a transmitter transmits a carrier signal to a wireless channel, the carrier signal includes an authentication signal, a pilot signal and an information signal, and the wireless channel is the time-varying fading channel; a receiver receives the carrier signal, and performs BKIC processing and differential signal processing on the carrier signal to obtain a target authentication signal, the receiver obtains a reference signal based on a key and the pilot signal, performs the differential signal processing on the reference signal to obtain a reference authentication signal, and calculates a correlation between the target authentication signal and the reference authentication signal to obtain a test statistic; and compares the test statistic with a prescribed threshold to determine whether the carrier signal is capable of passing authentication.

Abstract: Disclosed is a blind authentication method for a frequency selective fading channel based on belief propagation.

Abstract: In a method of security detection for a physical layer authentication a transmitter transmits a first signal, which, after passing over a wireless fading channel becomes a second signal. An active adversary receives the second signal and determines a first false alarm probability based. The adversary may determine a first optimal threshold by setting the first false alarm probability less than or equal to an upper bound, and then determine a first detection probability. A receiver device also receives the second signal, extracts an object signal from it, determines a residual signal from the object signal, and a second testing statistic. The receiver may then determine a second optimal threshold and a second detection probability. Based on the first and second detection probabilities, the system may determine a probability of security authentication and thus measure the safety of the physical layer authentication system.

Abstract: A method of security detection for a physical layer authentication system takes into account the signal-discriminating ability of an active adversary. The distance to the active adversary is estimated by an authorized transmitter based on its broadcast signal and, based on the distance estimate, the signal-to-noise ratio (SNR) of the adversary is also estimated.

Abstract: A method for part mobility prediction based on a static snapshot consisting of several steps: constructing mobility units from each 3D model in a set of 3D models with parts segmented according to their motion and grouping all of the mobility units according to their motion type; computing snapshot descriptors for every static snapshot in a mobility unit; learning a snapshot-to-unit distance measure for every motion types of the mobility units; getting the most similar mobility unit and its motion type for a query static snapshot by using the snapshot-to-unit distance measure to select with the minimum distance value; generating multiple motion candidates for a query static snapshot according to the achieved mobility unit and its motion type, sampling the generated motion and getting the best motion parameter for the query static snapshot. This invention can predict the part mobility from a static snapshot of an object.

Abstract: This invention proposes a new method and software to generate a path with good quality for aerial video shooting in large scale scenes. Using a coarse 2.5D model of a scene, this path generation method consists of several steps: first the user is expected to specify a set of landmarks and designate a superset of key-views for each landmark; our system then automatically generates and evaluates a variety of local camera moves for observing each landmark, which are smooth and collision-free; then automatically determines the optimal order in which the landmarks should be visited, chaining the local camera moves into a single continuous trajectory. Thus, users are able to focus on specifying the visual content that should be captured by the aerial video, rather than on the difficult lower level aspects of designing and specifying the precise drone and camera motions.

Abstract: A wireless communication method and device include: a transmitting device dividing a to-be-transmitted signal into a plurality of packets by using a pre-agreed key; acquiring a preset equivocation threshold; according to the equivocation threshold, determining a power parameter adjustment factor for each of the packets; for each of the packets, performing power adjustment on a signal of the packet according to a power parameter adjustment factor of the packet; and transmitting the to-be-transmitted signal after power adjustment. After receiving the signal, the receiving device groups the signals according to the pre-agreed key, and calculates the power of each packet; determines a test statistic according to the power of each packet, and determines the test statistic whether the quantity is greater than or equal to a preset statistic threshold. If so, it determines that the signal is a tag signal, and if not, that it is a regular signal.

Abstract: In a wireless communication system, a transmitter sends a signal in the form of a number of channel blocks, onto some of which is superimposed an authentication signal. A receiver then uses probabilistic methods that take channel fading into account to determine how many blocks include the authorization signal, and then compares this number with a threshold value. This information may then be used by the transmitter to adjust transmission power.

Abstract: For wireless communication method, a to-be-transmitting signal is divided into (n+1) packets using a key pre-agreed to by a transmitter and a receiver, where n is a positive integer. The to-be-transmitted signal comprising a regular signal and a tag signal, said tag signal forming an authentication signal. When the difference between received amplitude values of the regular signal and tag signal fail to meet a first pre-determined requirement, a first power parameter adjustment factor is determined for the n packets preceding an (n+1)th packet and a second power parameter adjustment factor is determined for the (n+1)th packet, as well as an energy-limited condition of the to-be-transmitted signal power. The transmitted power of the respective (n+1) packets is then adjusted according to the corresponding power parameter adjustment factor before the to-be-transmitted signal is transmitted.

Abstract: This inventor provides a kind of recognition method and device, including the following stages: S1: get the first feature vector by putting the depth image of current best view of the object to be recognized to feature extractor; S2: get the output of pooling layer by putting the first feature vector to first hidden layer, then get the classification by putting the output of pooling layer to a hierarchical classifier; S3: generate the partial region of current view according to the output of pooling payer and view observation vector; S4: get the second feature vector by putting the partial region to second hidden layer, and the second feature vector includes the output of pooling layer and information of current view; S5: generate the next best view using a fully connected layer and the second feature vector; S6: repeat S1 to S5 until reach the leaf node of the hierarchical classifier. This inventor scans and recognizes the unknown scene, while solving the problem of next best view.

Abstract: A control processing system and an imaging method for a subcutaneous vein developing device are provided. The control processing system includes a processor subsystem and a programmable logic subsystem. The processor subsystem and the programmable logic subsystem are interconnected via a high-bandwidth Advanced eXtensible Interface (AXI) bus. The control processing system is in signal communication with a visible light source driving circuit, a near infrared light source driving circuit, a projection imaging element driving circuit, a near infrared imaging element driving circuit, a display screen driving circuit, and a user control interface. For a subcutaneous vein developing imaging application and imaging characteristics thereof, a control processing system architecture of a subcutaneous vein developing system is designed and is implemented in a manner of combining software and hardware.

Abstract: This invention proposes a new method and software to generate a path with good quality for aerial video shooting in large scale scenes. Using a coarse 2.5D model of a scene, this path generation method consists of several steps: first the user is expected to specify a set of landmarks and designate a superset of key-views for each landmark; our system then automatically generates and evaluates a variety of local camera moves for observing each landmark, which are smooth and collision-free; then automatically determines the optimal order in which the landmarks should be visited, chaining the local camera moves into a single continuous trajectory. Thus, users are able to focus on specifying the visual content that should be captured by the aerial video, rather than on the difficult lower level aspects of designing and specifying the precise drone and camera motions.

Abstract: This invention proposes a method for part mobility prediction based on a static snapshot. This part mobility prediction method consists of several steps: constructing mobility units from each 3D model in a set of 3D models with parts segmented according to their motion and grouping all of the mobility units according to their motion type; computing snapshot descriptors for every static snapshot in a mobility unit; learning a snapshot-to-unit distance measure for every motion types of the mobility units; getting the most similar mobility unit and its motion type for a query snapshot by using the snapshot-to-unit distance measure to select with the minimum distance value; generating multiple motion candidates for a query static snapshot according to the achieved mobility unit and its motion type, sampling the generated motion and getting the best motion parameter for the query snapshot. This invention can predict the part mobility from a static snapshot of an object.

Abstract: The present invention provides a method, apparatus, storage medium and device for controlled synthesis of inhomogeneous textures, which relates to the field of texture synthesis technique in image processing.

Abstract: A method for access control of shared data includes a data access requester transmitting a request for accessing a shared data to a data storage dealer, obtaining a cipher text of the shared data, a cipher text of an encryption key, an access strategy, and a cipher text attribute component from the data storage dealer, and transmitting a request for obtaining the user attribute component of the data access requester respectively to the attribute authorizers. The attribute authorizers generate the user attribute components of the data access requester respectively and transmit the user attribute components of the data access requester to the data access requester. The data access requester restores the encryption key, and decrypts the cipher text of the shared data according to the encryption key for obtaining the shared data requested to be accessed.