51 results about "Intensity coefficient" patented technology

The invention discloses a designing method for a gradient coil of a self-shielding superconductive nuclear magnetic resonance imaging system.The designing method comprises the steps that firstly, three-dimensional continuous triangular mesh dividing is performed on a main coil framework region and a shielding coil framework region, and an axial magnetic induction intensity coefficient matrix generated by mesh nodes in the main coil framework region and the shielding coil framework region on a target field point is calculated according to a boundary elements method; secondly, an optimization calculation model is built through a regularization method, wherein the optimization calculation model comprises two parts, the first part is deviation between the axial magnetic induction intensity generated by the mesh nodes in the main coil framework region and the shielding coil framework region on a target field point and the expected target magnetic induction intensity, the second part is the quadratic sum of the flow function curvature of the mesh nodes, and flow function values of the mesh nodes in the main coil framework region and the shielding coil framework region are obtained through solution; lastly, actual winding distribution of the gradient coil is obtained through a flow function method.

A 3D image display apparatus includes a tracking module, a position calculating module, an intensity calculating module, a 3D image processing module, an image converting module and a display module. The tracking module tracks an object and outputs coordinate information of the object. The position calculating module outputs position information according to the coordinate information. The intensity calculating module outputs intensity coefficient information according to the position information. The 3D image processing module receives the intensity coefficient information. The image converting module outputs target intensity information to the 3D image processing module according to original 3D image information. The display module receives modified 3D image information. The 3D image processing module outputs modified intensity information to the image converting module according to the intensity coefficient information and the target intensity information, and then the image converting module outputs the modified 3D image information according the modified intensity information.

The invention provides a control method of a miniature photovoltaic inverter having a three-phase unbalance management function. The control method comprises the steps of performing real-time detection to obtain an illumination intensity coefficient Phi of a microgrid photovoltaic panel and current/voltage values of a plurality of single-phase miniature photovoltaic inverters to which a three-phase power grid is connected, calculating three-phase unbalance degree Mu, determining a power allocation efficient Gamma of a photovoltaic cell module by simultaneously combining the coefficient Phi and the unbalance degree Mu and by employing a fuzzy proportional integral (PI) control algorithm, and building an output power allocation scheme of the cell module; and building an i

-i<q> instruction current solution model, subtracting load current from the solved fundamental positive-sequence component to obtain a compensation current containing harmonic, a fundamental wave negative-sequence current and a fundamental wave active power transmission current in the compensation current, and finally, adjusting the size of an injected power to a microgrid from the battery module according to the allocation coefficient Gamma. The illumination intensity coefficient, the three-phase current unbalance degree, the fuzzy PI control algorithm and the i

-i<q> model are combined, and harmonic current suppression, load reactive power compensation and three-phase unbalance management are adaptively achieved.

The invention relates to a deblocking filter method in a video coding/decoding system. The invention aims to solve the problems in the prior art, such as unreasonable configuration between on-chip cache utilization rate and read/write frequency of out-chip memory and low concurrence level of read/write and filter calculation of out-chip memory. The invention discloses a deblocking filter method in a video coding/decoding system and a device thereof. The inventive deblocking filter method in the video coding/decoding system is based on half prefetching macro-block data technique and macro-block data monocycle post-write technique, enables the on-chip buffer to read macro-block data from the out-chip memory, and realizes the concurrent execution of filter intensity coefficient calculation and pixel filter calculation. The invention also discloses a device for implementing the above method. The invention has the advantages that: the invention keeps the balance between the on-chip cache utilization rate and read/write frequency of out-chip memory, reduces the complexity of filter calculation, and realizes the highly concurrent execution between the read/write operation of out-chip memory and the on-chip deblocking filter calculation operation.

The embodiments of the invention disclose an image processing method and device. The method provide by the embodiments of the invention comprises: the image processing device dividing acquired images into macro-blocks; for a current macro-block, the image processing device calculating the discrete characteristic coefficient of the current macro-block; when the discrete characteristic coefficient is greater than or equal to a preset first threshold, the image processing device extracting the sub-boundary component value of the current macro-block by using an edge extraction operator; the image processing device calculating the sub-block edge intensity coefficient of the current macro-block according to the sub-boundary component value; the image processing device determining an image dividing mode according to the sub-block edge intensity coefficient and a preset threshold set; and the image processing device outputting the image dividing mode. The embodiments of the invention also provide the image processing device. The method and device provided by the invention can reduce the calculating burden at a coding end under the condition that the image compression efficiency is ensured.

The invention relates to a flat wagon center sill. The flat wagon center sill is characterized by comprising two supporting plates, a continuous upper cover plate and a dovetail-shaped lower cover plate, wherein the upper cover plate and the lower cover plate are welded on the upper and lower end faces of the two supporting plates respectively to form a box body, and two ends of the box body form two traction beams of the flat wagon center sill; in the box body, a plurality of inner clapboards are welded between the upper cover plate and the lower cover plate; a butterfly connector and an upper center plate are sequentially welded at the installation position of a center plate of each traction beam; and a rear draft lug and a front draft lug are welded in the cavities of the traction beams respectively. The two supporting plates are made into a fish belly type structure, the upper cover plate and the lower cover plate are welded on the upper and lower end faces of the two supporting plates to form the box body, and the plurality of inner clapboards are welded in the box body to form a plurality of small box bodies, so the integral stress intensity coefficient of the flat wagon center sill is greatly improved. The flat wagon center sill can be widely applied in the field of railway wagon transportation.

The invention discloses an image brightness adjustment method and system, and a computer readable storage medium. The method comprises the following steps: after an image signal to be displayed is received, performing noise reduction processing on the image signal to be displayed, and obtaining an image signal to be displayed after noise reduction; comparing the image signal to be displayed beforenoise reduction with the image signal to be displayed after noise reduction, and obtaining a signal-to-noise ratio; calculating a compensation intensity coefficient according to the signal-to-noise ratio, and determining an attribute value of each region of an image to be displayed; and adjusting the brightness of the image to be displayed according to the compensation intensity coefficient and the attribute value. According to the image brightness adjustment method provided by the invention, the intensity of data compensation is adaptively adjusted through the signal-to-noise ratio in the Local Dimming data compensation process, data compensation is reduced for image pictures with large noise, and the increase of the image dark noise is avoided; and larger data compensation is adopted for the image pictures with small noise, so that the detail visibility of the image dark part is good, so that the quality of the image displayed by a television is improved.

The invention discloses a laser self-mixing interference system with the feedback light intensity self-adaptive adjustment function. The system is composed of a laser, a driving power source, a photoelectric detector, a transimpedance amplifier, a filter, a data acquisition card, an upper computer, a micro controller, an isolation amplification circuit, a stepping motor, a transmission mechanism and an adjustable attenuation sheet, wherein data from the data acquisition card are read by the upper computer, the output power waveform of the laser is restored through processing, and modulation factors affecting the power fluctuation range are extracted from the output power waveform and loaded into the micro controller. According to the proportion relation between the modulation factors and a feedback intensity coefficient, the feedback intensity coefficient is acquired after data processing is performed in the micro controller and compared with a pre-input ideal intensity coefficient, a pulse signal is output according to a comparison result so that the stepping motor can be controlled, the attenuation sheet is driven to rotate so that the attenuation rate can be adjusted, and the purpose of adjusting the feedback light intensity can be achieved.

The invention relates to the technical field of 3D videos, and discloses a 3D video play method and a 3D video play system. The method comprises the following steps of: grading 3D video programs according to the intensity of movement elements of picture contents in the 3D video programs to obtain movement intensity coefficients; and when the 3D video programs are played, extracting current movement intensity coefficients in real time, and controlling the opening and closing speed of shutter type 3D glasses and the play frame rates of video frames of the 3D video programs according to the extracted current movement intensity coefficients. Therefore, the method and the system can realize the control over the opening and closing speed of the shutter type 3D glasses and the play frame rates of the video frames of the 3D video programs according to the movement intensity coefficients of the 3D video programs, and by a play content-related adaptive shutter speed adjustment method, reduce problems on health caused by the long-term watching of the 3D videos, reduce shutter type 3D video watching discomfort and influence on the health of a user, provide convenience for the user and simultaneously prolong the service life of the shutter type 3D glasses.

The invention belongs to the field of digital holography, and discloses a digital holographic harmonic detection and elimination method based on spectrum energy. The method includes six steps to complete the processing of an image with harmonic interference, which are Fourier transform of the image, search of a harmonic spectrum, readout of coordinates and a complex value of the harmonic spectrum, calculation of the frequency and interference intensity coefficient of harmonics in horizontal and vertical directions and the initial phase, construction of harmonic distribution using parameters, and image correction. The method of the invention only utilizes the energy relationship between the zero-order Fourier transform spectrum and the harmonic spectrum without the need to design a filter; the acquisition of the range of harmonics corresponding to the spectrum is not required; no impact will be exerted on the information of the original light; an inverse Fourier transform is not required on the spectrum; and after the harmonic parameters are obtained using the energy relationship, the harmonic intensity distribution is constructed, the harmonic is eliminated by direct subtraction and the calculation is simple.

The invention provides a blind watermark embedding method and extraction method. The embedding method comprises the steps: enabling the positions of all pixels in a watermark drawing board filled witha watermark image to be disordered through a random sorting method to obtain the disordered watermark drawing board, wherein the size of the watermark drawing board is consistent with the pixel sizeof an original image; carrying out the superposing of the disordered watermark drawing board and a spectrum image according to a preset superposition intensity coefficient to obtain a superposed image, wherein the spectrum image is obtained through the two-dimensional DFT (discrete Fourier transform) of the original image; carrying out the inverse two-dimensional DFT of the superposed image to obtain the image with an embedded watermark. The embedding method provided by the invention enables the watermark to be embedded into a frequency domain space of the image, and the low-frequency information has the concealing performances so that the naked eyes cannot see the watermark, thereby reducing the risk that the image is damaged by an image thief, guaranteeing that the quality of the image cannot decrease because of the watermark. The embedding method is higher in anti-attack performance, and can prevent the image zooming, image format changing and image cutting modes.

The invention provides a video image 3D noise reduction method and an apparatus thereof. The method comprises the following steps of collecting current first image data from a video image; carrying out 2D noise reduction based on an airspace on the first image data and acquiring current second image data; according to the current second image data, acquiring a binary image, wherein the binary image includes a background area and a foreground area; acquiring a filtering intensity coefficient of each pixel point in the current second image data on time-domain filtering; and according to a 3D noise reduction result of a previous frame of image data of the current first image data and the filtering intensity coefficient, carrying out 3D noise reduction processing on the current second image data. In an existing 3D noise reduction technology, relatively-accurate motion information is difficult to acquire; and FIR filtering is performed in a time domain so that storage cost of equipment is increased. By using the method and the apparatus of the invention, the above problems are solved. A noise reduction effect of the video image is increased so that 3D noise reduction can be widely applied.

The invention provides a high fidelity three-dimensional display method compatible with two-dimensional display based on LED backlight modulation. A linear least square problem is obtained for a calculation error by establishing a backward compensation module of time domain psychological visual modulation display; a backlight intensity coefficient is introduced, and an optimization problem is obtained through the linear least square problem; the optimization problem is simplified and converted into a geological problem to be solved, and an optimal and improved scheme of the time domain psychological visual modulation display is obtained. The existing 3-D technology is improved, so that the three-dimensional display technology can be compatible backwards, a user can see the three-dimensional display with switch glasses, and meanwhile a 2-D image can be clearly provided without wearing the glasses. According to the scheme of the high fidelity three-dimensional display method compatible with two-dimensional display based on LED backlight modulation, power consumption is low, complexity is low, a 3-D image with high quality is provided with priority, and meanwhile the quality of the 2-D image can be ensured.

The invention provides a deblocking effect filtering method and device in video encoding and decoding, equipment and a storage medium, and relates to the technical field of video encoding and decoding. The method comprises the following steps: acquiring texture complexity of a current frame; determining an intensity coefficient of deblocking filtering according to the texture complexity, wherein the intensity coefficient is used for distinguishing whether a boundary in a reconstruction frame corresponding to the current frame is a blocking effect boundary or not; and performing deblocking filtering processing on the reconstructed frame based on the intensity coefficient to obtain a filtered reconstructed frame. According to the embodiment of the invention, the method achieves the adaptiveadjustment of the intensity coefficient of deblocking filtering based on the texture complexity of an image frame, carries out the deblocking filtering of the reconstructed frame by employing the intensity coefficient matched with the texture complexity, facilitates the improvement of the quality of a filtered image, and reduces the code rate waste.

The invention discloses a scattered field determining method of a nonuniform medium target body. The scattered field determining method of the nonuniform medium target body solves the problem of determining the radar scattered cross section of the nonuniform medium target body in the field of military communication. The scattered field determining method comprises the realizing steps that the nonuniform medium target body is guided into and modeled; the four primary functions of each little tetrahedron are determined; the volume integral equation of the target body is established; the electricfield intensity of each little tetrahedron is discretized; each little tetrahedron is weighted and determined and the column vector of the electric field intensity coefficient of the target body is obtained; and the radar scattered cross section is determined through the target body equivalent current density. According to the scattered field determining method, the primary equations are definedat the four top points of the tetrahedron, non-conformal subdivision among the nonuniform medium is ignored, whether a tetrahedron unit is in contact with air or not does not need to be judged, the four primary functions are used by each little tetrahedron, and unit number and memory amount are saved. An electromagnetic scattered field and a radar scattered cross section of electrically large sizenonuniform medium target body are determined effectively, and the scattered field determining method is applied to the field of calculation electromagnetism.

The invention discloses a method for judging pile body uniformity of a cement soil stirring pile. The method comprises the steps of: (1) definition of a quality coefficient C1, an intensity coefficient C2 and a pile body uniformity coefficient M; and (2) judging method. The method for judging pile body uniformity of the cement soil stirring pile, disclosed by the invention, has the advantages that: the judging method is a quantitative index which comprehensively reflects a plurality of factors of pile formation uniformity of the cement soil stirring pile and can directly judge whether the stirring pile satisfies construction technical requirements; the mass coefficient and the intensity coefficient defined by the method can reflect clear physic meanings; a quantitative evaluation index which synthesizes various factors and is objective, impartial, convenient, good in operability and uniform in evaluation criterion is given for the first time to overcome randomness of judging a result through naked eyes manually in the specification; and according to the judging method, a test sample is directly adopted after an unconfined compressive strength test rather than adopting a test sample additionally so that a plenty of detection cost is saved.

The invention discloses an IQ signal phase error control method and system, and relates to the technical field of coherent optical modules, and the method comprises the following steps: achieving thecontrol of an IQ signal phase error through adjusting the intensity coefficient of a channel corresponding to an I-path signal and a Q-path signal. According to the method, a phase shifter is not needed, the orthogonal angle phase error of the IQ signal can be reduced or even eliminated under the condition that an original coherent optical communication system architecture is not changed, and theperformance of the coherent optical communication system is improved.

The invention discloses an enterprise brand value evaluation method. The method comprises a step of calculating a brand expected income V0 and a brand development potential VC, wherein the brand valueVB = the brand expected income V0 + the brand development potential value VC. Based on the presentation of a multi-cycle excess return method (GB/T29188-2012), a market option method is added, at thesame time, an intensity coefficient is adjusted from four dimensions to eight dimensions and twenty-two subdivision indicators, and a scoring system is more precise, objective and real. More factorssuch as brand development potential and possible brand investment in the future are added into a calculation category, the brand value and market competitiveness of an enterprise are more objectivelyand scientifically estimated with effort, and the brand value-adding trend of the enterprise in the future can be reflected better.

The method is suitable for the field of communication simulation countermeasure, and provides a radio radiation source fast finding method based on simulation space dynamic searching. All the red-square radio radiation sources in the simulation space and the signal characteristics of all the red-square radio radiation sources in the simulation space are obtained through traversing, firstly, signalcharacteristic pre-screening is carried out, and a radiation source which can be found can be extracted, and then the Fresnel distance is calculated to determine a propagation loss model, and the signal power intensity received by the detector from the radiation source is calculated on the basis, and a complex electromagnetic field intensity coefficient is superimposed, so that when the number ofthe radiation sources in the simulation space is large, the detected radio radiation sources can be quickly searched and found, and the characteristic information of the radio radiation sources can be extracted, and the timeliness of the simulation operation of the simulated training of the command information system is improved.

The invention provides a learning efficiency detection method and system, electronic equipment and a medium, and the method comprises the steps: obtaining the eye image information in front of a screen, and obtaining the opening degree and visual field range of eyes through the eye image information; obtaining an intensity coefficient according to the fitness of the eyes and the visual field range, and determining equivalent duration according to the intensity coefficient and the learning duration; and when the equivalent duration is greater than or equal to a preset duration threshold, regarding that the learning efficiency is qualified. The opening degree and the visual field range are used as reference indexes for measuring the learning efficiency of students, the students are preventedfrom being distracted, the situation that the students pretend to learn the progress by refreshing the learning duration is also avoided, the method and system can be conveniently applied to distanceeducation, and the learning efficiency of the students is improved.