712 results about "Conversion coefficients" patented technology

A multi-vision system includes chromaticity sensors for performing colorimetry of a plurality of display units. From colorimetry results obtained from the chromaticity sensors, a color conversion coefficient calculation unit inside a color calibration unit calculates the color conversion coefficient that is characteristic of each display unit. Calculated color conversion coefficients are stored in a color processing unit. The color calibration for this multi-vision system displays representing colors without a color conversion, and from colorimetry results of the representing colors for all the display units, a target color is decided automatically. For all display units, the color conversion coefficients are automatically calculated so that the representing colors are able to be displayed as a target color.

An image synthesizing apparatus which generates, from plural images with differing resolutions and lighting conditions, a synthesized image in which the resolution of the original image is improved and the lighting conditions match those of the original image. The image synthesizing apparatus includes: a camera which acquires an original image and plural reference images, the reference images being obtained by capturing the same object shown in the original image under differing lighting conditions; a reference image conversion unit which converts the resolution of the acquired plural reference images to the same resolution as the original image; a coefficient calculation unit which calculates, based on the original image and plural reference images, which now have the same resolution, a conversion coefficient used in performing linear combination on the plural converted reference images and generating an original image; and an image synthesizing unit which generates plural converted reference images by converting the plural reference images to a target resolution, generates a linear-converted image by performing linear combination on the generated plural converted reference images using the conversion coefficient, and outputs, as a synthesized image, the generated linear-converted image or an image in which the adjusted linear-converted image has been adjusted.

The embodiment of the invention discloses method and device for processing images in quantification, which improve the subjective quality of quantification-coded images on a simpler basis without affecting the performance of a coding and decoding system. The method comprises the following steps of: converting an image block to obtain a conversion coefficient matrix corresponding to the image block; dividing regions for the conversion coefficient matrix according to a pre-set division mode; counting a statistic of each divided region; and carrying out the quantification adjustment on the corresponding region in the conversion coefficient matrix of the image block according to the statistic of the region.

The invention discloses an electricity-gas interconnected comprehensive energy system peak clipping and valley filling method based on electricity-to-gas conversion. The method comprises the steps of firstly respectively establishing a power network model, a natural gas network model, an electricity-to-gas conversion model and a gas turbine model, wherein the power network and the natural gas network are coupled to form an electricity-gas interconnected comprehensive energy system via the electricity-to-gas conversion model and the gas turbine model; then introducing an economic conversion coefficient to project a net load peak clipping and valley filling target to an economic dimension, and forming a target with the lowest comprehensive cost together with the target with the lowest system operation cost, and establishing an electricity-gas interconnected comprehensive energy system peak clipping and valley filling model with consideration on various constraints of the power network and the natural gas network; and solving by using optimization software The General Algebraic Modeling System (GAMS), wherein an example analysis result shows that the model provided by the invention has good peak clipping and valley filling effect.

A method for evaluating sterilization effect of disinfectant by means of ATP bioluminescence includes preparing standard bacterial suspension, processing it with cell ATP release agent Ec and adding luciferase - luciferin reagent to detect out luminous value or filtering it with microhole film in combination with ATP scavenger and detecting out luminous value of filtering film, then carrying out equation calculation and utilizing conversion coefficient K to derive out live bacteria number in suspension for evaluation.

A measuring unit obtains measurement data of an object measured on the basis of a signal from a GPS satellite and angular velocity of an object output from an angular velocity sensor. An offset value computing unit estimates a running condition of the object on the basis of the measurement data and the angular velocity. The offset value computing unit sequentially derives temporary offset values while changing combination of the measurement data and the angular velocity in accordance with the estimated running condition of the object and, after that, executes statistical process on the temporary offset values, thereby deriving an offset value. An angular velocity conversion coefficient computing unit sequentially derives temporary angular velocity conversion coefficients on the basis of the measurement data and the angular velocity and, after that, executes statistical process on the temporary angular velocity conversion coefficients, thereby deriving an angular velocity conversion coefficient. An angular velocity converting unit derives final angular velocity on the basis of the angular velocity conversion coefficient, the offset value, and the angular velocity.

The invention belongs to the field of picture/video coding/decoding in the signal processing, relating to an entropy coding method of conversion coefficient in the picture/video coding. The invention extracts the position information and value information of non-zero coefficients from a string of coefficients scanned to make the variable-length coding, and as coding the position information, combines the continuous zero coefficients and non-zero coefficients into two- dimensional combined pairs of zero-coefficient travel and non-zero-coefficient travel and makes variable-length coding on them, and as coding the value information, combines the continuous plus or minus 1 and the values or absolute values of the back coefficients with the absolute values greater than 1 into two-dimensional pairs of the travel of plus or minus 1 and the said value or absolute value, and makes the variable-length coding on them, or uses 1 bit to indicate if the absolute values of the string of non-zero coefficients are all 1. The invention makes further use of the statistical properties in the position information and the value information of the non-zero coefficients, thus obtaining a prior compressing performance to that of the existing entropy coding method.

A three-dimensional positioning method includes establishing the geometric model of optical and radar sensors, obtaining rational function conversion coefficient, refining the rational function model and positioning the three-dimensional coordinates. Most of the radar satellite companies and part of the optical satellite only provide satellite ephemeris data, rather than the rational function model. Therefore, it is necessary to obtain the rational polynomial coefficients from the geometric model of optical and radar sensors; followed by refining the rational function model by the ground control points, so that object image space intersection is more serious; and then followed by measuring the conjugate point on the optical and radar images. Finally, the observation equation is established by the rational function model to solve the three-dimensional coordinates. It is obvious from the above results that the integration of optical and radar images does achieve the three-dimensional positioning.

The invention relates to a target IP (Internet protocol) geographic position locating method based on a nearest common router. The method can effectively solve the problems that the errors are great, the precision is low, and the actual requirements cannot be met. The method comprises the following steps that a time delay detection packet and a path detection packet are used, and the time delay and the path information from a detection source to a target IP and a landmark node are measured; the path information from the detection source to the target landmark node is used for finding a landmark with the nearest common router as the target; the time delay from the detection source to the landmark and the router is used, and the time delay between the landmark and the router is calculated; the time delay and the position information of the landmark are used, and a conversion coefficient of the distance restraint and the time delay between the router and the landmark are calculated on the basis of the cosine law; the time delay and the conversion coefficient are used for calculating the distance between the router and the landmark; the position of the nearest router is calculated on the basis of three-point locating, and is used as the locating value of the located position of the target IP. The method has the advantages that the operation is easy, the use is convenient, the effect is good, and the locating precision on the target IP can be improved.

This invention relates to a binary-value method in the encoding of conversion coefficient entropy in image encoding, which designs a new binary-valued method to a series of factors after scanning the image block characterizing in first of all, encoding the last non-zero coefficient position information in a code stream then the last non-zero factor begins to carry out algorithm encoding to all factors in countdown sequence secondly, after the last non-zero factor is binary-valued, a probability model is selected to encode it.

The invention discloses a rolling mill transmission system key component fatigue life early warning method based on load spectrum analysis. The method is characterized by comprising the following steps: 1, obtaining a rolling mill transmission system key component load spectrum through real-time monitoring in a rolling mill working process; 2, based on a computer simulation technology, obtaining a stress distribution and conversion coefficient of a rolling mill transmission system key component; 3, obtaining a corresponding stress spectrum by performing conversion processing on the load spectrum measured in the first step; 4, compiling an equivalent stress amplitude histogram by performing statistics on the stress spectrum after processing in the third step by use of a cyclic rain flow counting method; and 5, calculating fatigue life circulation frequency of a transmission part by use of a correction Miner method, and converting the fatigue life circulation frequency into a fatigue life taking a year as a unit. The method solves the problems of large calculation amount and high calculation complexity in a conventional fatigue life calculation method, has quite high applicability and operability and is high in engineering practicality.

An embodiment of the invention provides an intra-frame coding and decoding method, a coder and a decoder. The intra-frame decoding method includes: acquiring the reference pixel value of a current image block; acquiring the predicted value of the first kind of pixels in the current image block according to the reference pixel value of the current image block in an intra-frame prediction algorithm, wherein the current image includes the first kind of pixels and the second kind of pixels, and the second kind of pixels include pixels except pixels of the first kind of pixels; acquiring the residual value of the first kind of pixels according to the predicted value and the original pixel value of the first kind of pixels; obtaining conversion coefficient according to the residual value of the first kind of pixels; acquiring the quantitative conversion coefficient through quantitative coefficient conversion; reconstructing the first kind of pixels according to the e quantitative conversion coefficient and the predicted value of the first kind of pixels to obtain the reconstruction value of the first kind of pixels; acquiring the reconstruction value of the second kind of pixels according to the reconstruction value of the first kind of pixels in an interpolation method. The intra-frame coding and decoding method, the coder and the decoder can code flexibly and improve the coding efficiency.

The invention relates to a turbine rotor blade accelerated life test load design method taking regard of flight damage. The method includes: 1) conducting frequency mixing treatment and rain flow counting on aeroengine flight missions and training subjects to acquire the frequency and time of each rotation speed cycle in actual flight, thus obtaining the load basic data of an engine within certain flight hours; 2) acquiring the temperature field and stress strain distribution of the blade under all states by finite element method, analyzing the blade static strength and endurance, and determining a lifetime testing part of the blade; 3) calculating the fatigue damage and creep damage of the blade testing part under a true flight load to acquire a ratio of creep damage and fatigue damage during rise and fall of a flight; and 4) designing a accelerated life test load spectrum of a full-size blade, and determining a conversion coefficient of the blade test load spectrum relative to out-field flight. The method provided by the invention can be used for acquiring the technical life of the blade and studying the remaining life of the blade, and saves time and economic cost for the fatigue-creep lifetime test of the blade.

The invention relates to the communication field, and discloses a method for receiving and sending the voice coding and decoding and a device thereof, so as to allow the code efficiency of voice signals to be enhanced and the voice quality to be enhanced. The time-frequency conversion is performed to voice signals to obtain X frequency domain conversion coefficients, the X frequency domain conversion coefficients are quantified to obtain the broad-band coded signals, wherein, Y frequency domain conversion coefficients which are relatively important are quantified with a first codebook, the other X-Y frequency domain conversion coefficients are quantified with a second codebook, the code word quantity of the first codebook is higher than the code word quantity of the second codebook, Y is smaller than or equal to X and larger than or equal to 1, and the acquired broad-band coded signals are sent. According to the ratio of the average spectrum amplitude and the maximum spectrum amplitude of each quantified block, fine spectrum structures of the frequency domain quantified signals in the quantified block are reduced, wherein, the smaller the ratio is , the larger the reducing extent of the fine spectrum structures are.

The invention provides a method and a device for measuring the index number of canopy vegetation of crops. The method comprises the following steps of: acquiring visible images and near-infrared (NIR) grayscale images of canopies of target crops, extracting red, green and blue components in the visible images, and performing grayscale respectively on the red, green and blue components in the visible images to acquire grayscale images of the red, green and blue components respectively; according to conversion coefficients acquired in advance, calculating the spectral reflectivity of each pixel point in the grayscale images of the red, green and blue components and the spectral reflectivity of each pixel point in the NIR grayscale images; and according to the spectral reflectivity of each pixel point in the grayscale images of the red, green and blue components and the spectral reflectivity of each pixel point in the near-infrared grayscale images, calculating the index number of the canopy vegetation of the target crops. In the method and the device for measuring the index number of the canopy vegetation of the crops, two charge coupled devices (CCDs) are adopted to acquire the visible images and the NIR images so as to reduce the cost; and the method is simple.

There is provided an intra prediction system having high prediction performance and satisfactory encoding efficiency in a pattern image in which pixel value is periodically changed and a pattern image in which pixel value has a constant change tendency like gradation effect. A frequency component extraction unit allows a pixel value of an encoded MB to be made one-dimensional for one-dimensional orthogonal conversion. A frequency component-considering prediction value calculation unit receives, as inputs, a pixel value of an encoded adjacent MB and an alternating current frequency component output to create an orthogonal conversion coefficient. The orthogonal conversion coefficient then is subjected inverted orthogonal conversion (IDCT) to generate a prediction value p(i). A prediction direction determination unit selects and outputs a prediction value p′ (i) in a prediction direction having the highest encoding efficiency among a conventional prediction value calculation unit and a prediction value calculation unit according to the present invention.

A process and an assembly for eliminating nitrogen oxides (NO.sub.x) present in the exhaust gas of a lean-burn diesel or spark-ignition engine, is part of the exhaust line coming from the engine. At least one nitrogen oxides conversion catalyst is placed in the main exhaust line the catalysts having non-coinciding temperature ranges for which the NO.sub.x conversion is below a certain conversion coefficient (C.sub.min). At least one NO.sub.x trap placed upstream is the conversion catalyst(s) and intended to trap, then to release the nitrogen oxides. At least one line bypassing the main exhaust line contains at least one of the NO.sub.x trap(s); and at least one valve intended to modulate the flow of gas between the bypass line and the main exhaust line is provided so that the NO.sub.x trap(s) can trap the nitrogen oxides, notably when conversion catalyst(s) have a conversion coefficient below a predetermined value (C.sub.min) and so that said the NO.sub.x trap(s) means (4) can release the nitrogen oxides simultaneously with a conversion.

A switching power supply control circuit has a switching element, a smoothing circuit, and a switching control circuit configured to control the switching element. The switching control circuit includes I-V converter configured to multiply an output current flowing into the switching element by a predetermined conversion coefficient and generating an I-V conversion voltage, an amplifier configured to amplify the sum of the I-V conversion voltage and an offset voltage and generating a current detection signal, a first DAC configured to convert a digital compensation value computed from an output voltage of the smoothing circuit to an analog converted value, a first analog comparator configured to compare the current detection signal with the analog converted value and generating a first comparison result signal, and a driver configured to control the switching element on the basis of the first comparison result signal.

The invention discloses a geological survey method of a tunnel face based on a digital image. The geological survey method comprises the following steps of: A, confirming a target object and marking the tunnel face; B, photographing to the tunnel face by using a high-resolution digital camera to shoot a complete tunnel face region; C, calculating the proportion conversion coefficient of a real object and an image according to the distance of two marking points on the tunnel face and the pixel value of two points in the image; D, performing grey level transformation, color equalization, brightness/contrast adjustment, hue/saturation control and image filtering to logarithms; E, calculating all pixels in the digital image; F, calculating extended length of structural surface, total extension of unit area crack, linear fit of structural surface, viewing dip angle of structural surface and space structural surface parameter of structural surface by the binary image of the structural surface to obtain geological survey achievements of the tunnel face. The geologic sketch map of the tunnel face is obtained by the method, so that the geological sketch speed and the geological survey precision and accuracy are improved.

An imaging device includes an image sensor that includes imaging pixels that are disposed in a two-dimensional array and focus detection pixels disposed in part of the array of the imaging pixels, a coefficient setting circuit that sets a conversion coefficient to be used to convert an output from each focus detection pixel to an image output at the focus detection pixel, in correspondence to an aperture value set at an imaging optical system, and an estimating circuit that estimates the image output at the focus detection pixel based upon the conversion coefficient and the output from the focus detection pixel.

Light quantity information of an imaging optical system is acquired according to a focus detection position in an imaging screen. Conversion is performed from the light quantity information and a first aperture value of the imaging optical system, so that the first aperture value is converted into a second aperture value according to the focus detection position. A conversion coefficient is set according to the second aperture value and an exit pupil distance. A correction value to correct output signals from an imaging unit is obtained according to the second aperture value and an exit pupil distance.

The invention discloses a method and a device for constructing an ultra-resolution model of an image. The method comprises the following steps of acquiring original images with different resolutions;calculating the conversion coefficient of each original image; performing sampling processing on the corresponding original image according to the conversion coefficient, and obtaining a low-resolution image sample set; inputting the images in the low-resolution image sample set into a three-dimensional convolutional neural network, training the three-dimensional convolutional neural network, andobtaining an ultra-resolution model of the image. Therefore, through the low-resolution image sample set which is generated from the original images with different resolutions, the three-dimensional convolutional neural network is trained for obtaining the ultra-resolution model of the image. Therefore a purpose of reconstructing the high-resolution image through a single model is realized. Furthermore the designed three-dimensional convolutional neural network comprises a plurality of convolutional layers which do not comprise a pooling layer, thereby improving detail distinguishing capability of the reconstructed high-resolution image.