142 results about "Scale function" patented technology

A method and system for multi-scale anatomical and functional modeling of coronary circulation is disclosed. A patient-specific anatomical model of coronary arteries and the heart is generated from medical image data of a patient. A multi-scale functional model of coronary circulation is generated based on the patient-specific anatomical model. Blood flow is simulated in at least one stenosis region of at least one coronary artery using the multi-scale function model of coronary circulation. Hemodynamic quantities, such as fractional flow reserve (FFR), are computed to determine a functional assessment of the stenosis, and virtual intervention simulations are performed using the multi-scale function model of coronary circulation for decision support and intervention planning.

The temperature distribution associated with a design of an integrated circuit is calculated by convoluting a surface power usage represented by a power matrix with a heat spreading function. The heat spreading function may be calculated from a simulation of a point source on the integrated circuit using a finite element analysis model of the integrated circuit or other techniques. To account for spatial variations on the chip, the heat spreading function may be made dependent on position using a position scaling function. Steady-state or transient temperature distributions may be computed by using a steady-state or transient heat spreading function. A single heat spreading function may be convolved with various alternative power maps to efficiently calculate temperature distributions for different designs. In an inverse problem, one can calculate the power map from an empirically measured temperature distribution and a heat spreading function using various de-convolution techniques. While the forward problem is analogous to image blurring, the inverse problem is analogous to image restoration.

A quantizer and dequantizer for use in a video coding system that applies non linear, piece-wise linear scaling functions to video information signals based on a value of a variable quantization parameter. The quantizer and dequantizer apply different non linear, piece-wise linear scaling functions to a DC luminance signal, a DC chrominance signal and an AC chrominance signal. A code for reporting updates of the value of the quantization parameter is interpreted to require larger changes when the quantization parameter initially is large and smaller changes when the quantization parameter initially is small.

A real-time approximately 360 degree image correction system and a method for alleviating distortion and perception problems in images captured by omni-directional cameras. In general, the real-time panoramic image correction method generates a warp table from pixel coordinates of a panoramic image and applies the warp table to the panoramic image to create a corrected panoramic image. The corrections are performed using a parametric class of warping functions that include Spatially Varying Uniform (SVU) scaling functions. The SVU scaling functions and scaling factors are used to perform vertical scaling and horizontal scaling on the panoramic image pixel coordinates. A horizontal distortion correction is performed using the SVU scaling functions at at least two different scaling factors. This processing generates a warp table that can be applied to the panoramic image to yield the corrected panoramic image. In one embodiment the warp table is concatenated with a stitching table used to create the panoramic image.

The invention relates to a laser shaping method of a multi-scale functional surface of micronano for semiconductor material, relating to micronano material preparation and laser micromachining technical field; the invention aims at providing a method and a device for preparing femtosecond laser of super-hydrophobic functionalization for microstructural surface based on the semiconductor material and through the systematically technical design of multi-scale surface micro-shaping and microstructural surface processing, and realizing optional and controllable preparation of semiconductor material surface having multi-scale microstructure such as micron, submicron and nano. The invention solves the technical problems such as high cost, low efficiency and difficult operation in traditional preparation methods of microstructural surface with super-hydrophobic function.

The invention relates to a method and a device for analyzing the reliability of an integrated circuit. In the analytical method, a unit circuit delayed aging stochastic analysis reference model in consideration with both negative bias temperature instability (NBTI) effect and process parameter perturbation is established, a scaling function and an equivalent aging time concept are provided to solve the delayed statistical distribution of a unit circuit under the actual work environment quickly from the reference model, and the pre-clipping process of the circuit is provided to reduce the complexity of reliable analysis. The device of the invention comprises an input unit, an output unit, a program storage unit, an external bus, a memory, a storage administration unit, an input / output bridging unit, a system bus and a processor. In the method and the device, the effect of the process parameter perturbation, the NBTI effect and the work environment of the circuit on reliability are considered simultaneously, and the complexity of the reliable analysis can be reduced effectively by utilizing the scaling function, equivalent aging time and the pre-clipping technology so as to realize the quick analysis on the reliability of super-large-scale integrated circuits in consideration with process deviation.

The invention discloses a solar energy water heater with a self-cleaning vacuum tube water scale function. The solar energy water heater comprises a water box, a base and vacuum tubes arranged betweenthe water box and the base, wherein the base is internally provided with a round cavity arranged in the horizontal direction, the lower end of each vacuum tube is provided with a rolling ball screw rod in a running through manner, joints between the rolling ball screw rods and the corresponding vacuum tubes are in seal rotating connection, the lower end of each rolling ball screw rod is fixedly connected with a gear, the inner wall of the round cavity is slidably connected with a toothed bar engaged with the gears, the round cavity is internally provided with a pushing mechanism used for pushing the toothed bar to move, the pushing mechanism comprises a first stretching and contracting air bag arranged inside the round cavity, and the first stretching and contracting air bag is internallyprovided with a second stretching and contracting air bag. The solar energy water heater with the self-cleaning vacuum tube water scale function is novel in conception, water scale on the inner wallsof the solar energy vacuum tubes can be removed, and the heating efficiency and service life of the solar energy vacuum tubes are guaranteed.

The invention discloses a motor train set stop counterpoint video monitoring system, comprising an image acquisition and processing unit for real-timely monitoring the motion of a maintained motor train set, a monitoring unit embedded with a scale function module and an alarm prompt device controlled by the monitoring unit, wherein the image acquisition and processing system is mounted according to the maintenance position on which a maintained motor train set should stop, the image acquisition and processing system is connected with the monitoring unit connected with at least one user PC, the image acquisition and processing system and the user PC and the user PC are connected and communicated via a wireless network, the scale function module real-timely measures the motion speed of the maintained motor train set and the distance between the maintained wheel of the motor train set and the maintenance position. The invention can accurately display the distance between the maintained wheel of a maintained motor train set and the processing position, via which drivers can park accurately, realize accurate counterpoint of wheels and attain high working efficiency.

Function spaces defined by scaling functions are used to generate bandlimited noise octaves and other attribute data sets. Scaling functions are basis functions that admit multiresolution analysis and include piecewise constant scaling functions, piecewise polynomial scaling functions, bandlimited scaling functions, Daubeschies scaling functions, as well as other multiresolution analysis scaling basis functions known to those of skill in the art. Scaling basis functions can be locally supported or have infinite support. The properties of the scaling basis functions used to construct bandlimited noise octaves may ensure that any bandlimited noise octave at resolution level N is orthogonal to bandlimited noise octaves and their associated scaling basis functions at all resolution levels less than N. Bandlimited noise octaves can be scaled to any resolution level and guaranteed to have no effect on images at any lower resolution level.

A medical treatment support system has operations A to G on a display screen to easily handle respective data on a sheet. Operation A facilitates the browsing of a large amount of data. Operations B and C allow the user to easily copy and move data. Operation D is a scale function to facilitate measurement. Using operation E, the operator can easily divide an area into segments only by drawing a horizontal line. Operation F is used to change a display angle of image data displayed on the screen. Operation G allows the user to browse respective data classified for each sheet label. The new functions of the single-unit input / output pen-tablet device can be intuitively operated by a user not versed in the functions. This consequently mitigates the load of complex input operation which interrupts thinking of the user and which hinders diagnosis mitigated in medical treatment. A medical treatment support system, a display method for the same, and a recording medium having stored the same provide, in the processing of information regarding medical treatment, advantages of electronic data processing and advantages of processing of handwritten data on a sheet of paper.

Function spaces defined by scaling functions are used to generate bandlimited noise octaves and other attribute data sets. Scaling functions are basis functions that admit multiresolution analysis and include piecewise constant scaling functions, piecewise polynomial scaling functions, bandlimited scaling functions, Daubeschies scaling functions, as well as other multiresolution analysis scaling basis functions known to those of skill in the art. Scaling basis functions can be locally supported or have infinite support. The properties of the scaling basis functions used to construct bandlimited noise octaves may ensure that any bandlimited noise octave at resolution level N is orthogonal to bandlimited noise octaves and their associated scaling basis functions at all resolution levels less than N. Bandlimited noise octaves can be scaled to any resolution level and guaranteed to have no effect on images at any lower resolution level.

The invention relates to a fitness scaling method for improving overall search capability of a genetic algorithm, wherein a logarithmic function serves as a scaling function, and the fitness of every individual of every generation during population evolution is re-adjusted through logarithm arithmetic, so as to reduce the influence of a super individual on the population evolution, further avoid the premature convergence in the genetic algorithm and improve the overall search capability of the genetic algorithm.

The invention discloses an SAR (Synthetic Aperture Radar) image segmentation method based on Treelets and fuzzy C-means clustering, mainly solving the problem that target identification cannot be manually carried out on a large quantity of images in the prior art. The SAR image segmentation method comprises the steps of: 1, extracting texture features and wavelet features of an input SAR image to be segmented; 2, forming the texture features and the wavelet features into a feature matrix; 3, carrying out Treelets conversion on the feature matrix to obtain a basis matrix; 4, multiplying the feature matrix with a scaling function of the basis matrix to obtain a structural vector; and 5, carrying out fuzzy C-means clustering on the structural vector to obtain a segmentation result of the SAR image. The invention can be used for reducing dimensions of high-dimensional data before clustering by utilizing the Treelets conversion, can effectively inhibit the noise and improve the segmentation speed of the SAR image, and is used for automatic segmentation on the SAR image for carrying out target identification.

The temperature distribution associated with a design of an integrated circuit is calculated by convoluting a surface power usage represented by a power matrix with a heat spreading function. The heat spreading function may be calculated from a simulation of a point source on the integrated circuit using a finite element analysis model of the integrated circuit or other techniques. To account for spatial variations on the chip, the heat spreading function may be made dependent on position using a position scaling function. Steady-state or transient temperature distributions may be computed by using a steady-state or transient heat spreading function. A single heat spreading function may be convolved with various alternative power maps to efficiently calculate temperature distributions for different designs. In an inverse problem, one can calculate the power map from an empirically measured temperature distribution and a heat spreading function using various de-convolution techniques. While the forward problem is analogous to image blurring, the inverse problem is analogous to image restoration.

The invention discloses a large-squint high-resolution SAR imaging method based on a distance-azimuth circle model. The method comprises the following steps: 1, constructing an SAR system geometric model to obtain an echo signal; 2, carrying out the range direction preprocessing of the signal in a frequency domain; 3, constructing the distance-azimuth circle model according to a range direction preprocessing result, and describing the azimuth space-variant characteristics of the SAR signal; 4, modeling an azimuth space-variant part in a remaining high-order RCM through a result given by the distance-azimuth circle model, and constructing a new variable-scale function to implement QRCMC, and then designing a distance compressing filter and completing all the processing in the distance direction; 5, modeling the azimuth space-variant characteristics of a Doppler phase according to the distance-azimuth circle model, achieving azimuth equalization through using an ENLCS algorithm, finallydesigning a filter for azimuth compression, and obtaining a final focused image. The method has a better focusing effect during the processing of large-squint and high-resolution echo data.

The invention discloses an image edge detection method based on fractional order partial differential, which comprises the following steps: the Sobel operator and a 3*3 pixel neighborhood with the gray-scale function of F (x, y) are subjected to convolution; the convolution sum is subjected to central difference to obtain an integral order differential expression; the integral order differential expression is replaced by a v order differential expression; based on definition of fractional differential, first three items of the fractional differential expression of a digital image substitute values in the v order differential expression; and different results can be obtained through regulation parameter, namely the differential order v. The method can satisfactorily extract edge contour information, has an excellent effect on texture detail detection, is superior to conventional edge detection methods, and satisfactorily achieves the purpose of image edge detection.

A method of identifying colon polyps in a digital volume, wherein the volume includes a plurality of values corresponding to a domain of points in a 3D space, is provided. The method includes selecting a mother wavelet scaling function that corresponds to a polyp; performing a forward wavelet transformation on the volume to obtain a set of wavelet coefficients, wherein each wavelet coefficient is associated with a length scale; determining, for each length scale, a transformation magnitude; and forming, for each length scale, a transformed set of wavelet coefficients associated with the length scale. An inverse wavelet transform is performed on the transformed wavelet coefficients for each length scale to obtain a reconstructed volume, and the reconstructed volume is analyzed for the existence of polyps.

The invention relates to a multi-wavelet fusion image processing method for polarization haze removal, and belongs to the technical field of image processing. According to the haze removing method, polarization detection is combined with a multi-wavelet fusion algorithm, on the basis of target polarization detection, a plurality of scale functions and a plurality of wavelet functions of multiple wavelets are utilized, properties such as symmetry, orthogonality and compact support are met simultaneously, and different rules are respectively adopted for fusion of polarization information such as the polarization degree and the polarization angel and the intensity information of a target according to characteristics of decomposed high / low frequency coefficients. By using the method, recognized details and brightness information of the target can be simultaneously integrated by a polarization fusion image, a target image with a relatively high recognition rate, relatively high quality and relatively much detail information is obtained in a haze weather environment, and the haze removal property of target detection is improved.

The invention discloses a rubbing acoustic emission denoise method based on empirical wavelet transform. The method comprises the following steps that (1) an acoustic emission signal is acquired through a rubbing acoustic emission experimental device; (2) adaptive partition is performed on the acoustic emission signal according to the Fourier spectrum features; (3) a wavelet window is added after partition, and an empirical scale function and an empirical wavelet function are defined; (4) empirical wavelet transform is defined; and (5) wavelet denoising is performed on each empirical mode component fi and then reconstruction is performed based on EWT. The beneficial effects of the rubbing acoustic emission denoise method based on empirical wavelet transform are that adaptive partition is performed according to the Fourier spectrum of the acoustic emission signal, and a wavelet filter bank is constructed to extract different intrinsic mode components included in the acoustic emission signal so that less modes are decomposed and the phenomena of mode aliasing and endpoint effect can be effectively filtered; and wavelet denoising is performed on each empirical mode component, reconstruction is performed based on EWT and denoising is performed on the signal so that the denoised signal has high signal-to-noise ratio and the denoise effect is obvious.

The hand held scale of the present invention comprises a rectangular casing with a weighing platform, for supporting items to be weighed, a display screen, for displaying the weight of the objects and to view the animation sequences. There are a series of digital animations that are viewable on the display screen and each different animation sequence corresponds to a particular scale function or operation. The user is amused and entertained with animation when the scale is turned on, objects are weighed, the scale is turned off, reset as well as other functions.

The present invention includes a real-time wide-angle image correction system and a method for alleviating distortion and perception problems in images captured by wide-angle cameras. In general, the real-time wide-angle image correction method generates warp table from pixel coordinates of a wide-angle image and applies the warp table to the wide-angle image to create a corrected wide-angle image. The corrections are performed using a parametric class of warping functions that include Spatially Varying Uniform (SVU) scaling functions. The SVU scaling functions and scaling factors are used to perform vertical scaling and horizontal scaling on the wide-angle image pixel coordinates. A horizontal distortion correction is performed using the SVU scaling functions at and at least two different scaling factors. This processing generates a warp table that can be applied to the wide-angle image to yield the corrected wide-angle image.

A pixel compositor device for routing an incoming stream of pixel data having been rendered elsewhere and bound for being projected. The device includes a plurality of digital signal inputs each adapted for receiving a plurality of pixel information from the incoming stream of pixel data. The digital signal inputs are in communication with at least one buffer for the pixel information once received by the device. A processing unit is included for image warping the pixel information by performing, on each of a respective of the pixel information: (i) a mapping relating to location of the respective pixel information, and (ii) a scaling function. The geometric mapping can be performed by applying an interpolation technique; and the scaling function can be any of a number of photometric correction functions (alpha-blending, color uniformity correction, image brightness or contrast adjustment, etc.). Once an image warping has been performed on the respective pixel information, it is routed out of the device through one of several digital signal outputs. A system for routing pixel data is disclosed having two or more of the pixel compositor devices in communication with an image rendering cluster of units (as the source of the incoming stream of pixel data) and a plurality of projectors; as is a method for routing an incoming stream of pixel data having been rendered elsewhere and bound for being projected.

A method and system for multi-scale anatomical and functional modeling of coronary circulation is disclosed. A patient-specific anatomical model of coronary arteries and the heart is generated from medical image data of a patient. A multi-scale functional model of coronary circulation is generated based on the patient-specific anatomical model. Blood flow is simulated in at least one stenosis region of at least one coronary artery using the multi-scale function model of coronary circulation. Hemodynamic quantities, such as fractional flow reserve (FFR), are computed to determine a functional assessment of the stenosis, and virtual intervention simulations are performed using the multi-scale function model of coronary circulation for decision support and intervention planning.

Data mapped on a spherical surface is encoded with a format enabling partial resolution and partial distribution. When data mapped on a spherical surface such as an entire circumference image is subjected to the spherical surface wavelet conversion, scaling coefficients and values of wavelet functions are arrayed for each level in the output data. The spatial scalability such as partial distribution or partial resolution can be realized by rearranging the coefficient ck<(j)> in the scaling function PHI k<(j)> and the value dk,m<(j)> of the wavelet function PSI k<(j)> according to positional relations on the spherical surface.

The invention discloses an outdoor multifunctional shovel which comprises a handle, a connecting rod and a shovel body. The handle sequentially comprises an outdoor cutter, an outdoor cutter sleeve, a screwdriver, a saw, a window breaking hammer and a shovel handle sleeve. The outdoor cutter, the outdoor cutter sleeve, the screwdriver, the saw, the window breaking hammer and the shovel handle sleeve are in threaded connection sequentially. A flashlight is in threaded connection with the upper end of the outdoor cutter. The lower end of the shovel handle sleeve is in threaded connection with the upper end of the connecting rod. The lower end of the connecting rod is in bolt connection with the shovel body. The upper end of the connecting rod is further fixedly connected with a walking pickaxe. The walking pickaxe is arranged in the shovel handle sleeve. A measuring scale is arranged on the upper surface of the shovel body. Sawteeth are arranged on the left edge of the shovel body. A blade is arranged on the right edge of the shovel body. The two corners at the rear end of the shovel body are each provided with an arc-shaped groove. The outdoor multifunctional shovel has the beneficial effects that the shovel function, the hammer function, the hoe function, the chopping function, the cutting function, the splitting function, the sawing function, the shearing function, the measuring scale function, the bottle opener function, the flashlight function, the outdoor cutter function, the screwdriver function, the saw function, the window breaking hammer function and the walking pickaxe function can be achieved, and the outdoor multifunctional shovel is convenient to use, small in size, convenient to carry and capable of greatly meeting the use requirements of people.

Disclosed in the invention is a Mallat algorithm-based marine gravity measurement error eliminating method. The method comprises the following steps: obtaining latitude, course, and ship speed information outputted by an inertial navigation system as well as a gravity signal measured by a gravity meter in real time; calibrating an initial parameter of the gravity meter; selecting a wavelet function and calculating a scaling function phi (t) and a wavelet function psi (t); calculating coefficients of a high-pass filter and a low-pass filter; carrying out decomposition on the gravity signal by using a Mallat algorithm according to the selected filter coefficients and selecting a decomposition level number; according to a signal to noise ratio of an original signal, calculating a heuristic SURE threshold value and carrying out noise reduction on the gravity signal based on a soft threshold method; reconstructuring the gravity signal after noise reduction, calculating an Etvs correction value by utilizing the information outputted by the inertial navigation system and carrying out filtering processing on the Etvs correction value; and carrying out Etvs correction on the gravity signal after the reconstruction. According to the invention, a defect of insufficient real-time performance during the gravity measurement can be overcome; a main error during the gravity measurement can be eliminated; and the gravity signal precision is improved.

A method, device and / or system for generating arbitrary scalable waveforms of a desired shape that can be used for generating a stimulation pulse for medical purposes such as for spinal cord stimulation therapy, where scaling function(s) can be used to scale arbitrary waveforms for increased flexibility and which can also be used for charge balancing purposes as well.