90results about How to "Eliminate smearing" patented technology

The invention belongs to the field of LED (light-emitting diode) drive control, and provides a blanking control circuit for LED (light-emitting diode) display screens and an LED drive chip. According to the invention, by adopting the blanking control circuit (comprising a time-sequence control module and a blanking module) for the LED (light-emitting diode) display screens, in the line scanning process of an LED display screen, the blanking module charges parasitic capacitors in each line of the LED display screen in a time gap generated by scanning every two lines of LEDs so to achieve the purpose of effectively eliminating a smearing phenomenon; meanwhile, a drive circuit module realizes the accurate constant current control on each line of LEDs on the LED display screen, so that the image display quality of the LED display screen is improved, thereby solving the problem that in the prior art, the display quality of the LED display screen is low because the accurate constant current control on LEDs can not be realized.

The invention provides a control method for using color LED light source as backlight source of the LCD, which comprises adopting color LED as the backlight source, time-sharing lightening LED by field sequential system principle, synthesizing color iamge by human-eye visual persistence effect; inserting full-black frame in time-sharing lightening time sequence for reducing round-off phenomenon when displaying dynamic image; mixing lightening backlight source LED of positive sequence and negative sequence for reducing degree of color breakup phenomenon; in addition, the invention provides a method for controlling the dynamic area for further improving contrast. Adopting the control method of the invention can further improve working performance and structure size of the LCD, prolong the service life and increase the color expressive force of the LCD.

The invention discloses a method for extracting foreground in piggery monitoring video. The method comprises the steps of firstly acquiring an initial background frame containing no foreground and a background frame sequence containing the foreground, then carrying out adjacent symmetric frame difference and background frame difference, carrying out foreground motion analysis according to the adjacent symmetric frame difference and the background frame difference, acquiring a status code, updating background and fusing the two frame differences by utilizing the status code so as to acquire a shade containing foreground, calculating background Euclidean distance of local texture operators and S (saturation) and H (hue) channel background frame difference of HSV (hue-saturation-value) colour space, combining shade discriminating conditions, and finally extracting a foreground frame according to result of pixel attribute values. The invention is applicable to piggery monitoring of large-scale piggery farms, has adaptability, robustness and higher foreground target segmentation accuracy and creates favorable conditions for subsequent work which is pig video intelligent analysis.

The invention discloses a TDI (Time Delay Integration) scan imaging method for a Snapshot type area array infrared detector. An optical mechanical scanning mechanism is arranged in front of an area array type infrared focal plane array, and the movement of an image is controlled by optical mechanical scanning. The shifted image obtained by the infrared focal plane array is input to a data accumulation processing circuit, and the image shifting accumulation processing is carried out to obtain the required image. The data accumulation processing circuit is mainly composed of a sampling circuit and a digital processing circuit. An AD (Analog-to-Digital) device is controlled by an FPGA (Field Programmable Gate Array) to perform sampling to finish the analog-to-digital conversion. After the analog-to-digital conversion is finished, a digital image signal is input to the digital processing circuit, the digital processing circuit performs image shifting accumulation, and finally the required image is output. The TDI scan imaging method for the Snapshot type area array infrared detector eliminates the trailing phenomenon caused due to the rotation of the detector when the area array detector is used in a search system, increases the signal-to-noise ratio of the image and is favorable for timely discovering a small dim target in a target searching and tracking system.

The invention discloses a light-emitting diode (LED) backlight driving method, a drive device and a drive circuit. The method comprises the following steps of: generating a dimming signal which comprises dimming delay time information matched with the switching time of a liquid crystal light valve; and driving an LED backlight according to the dimming signal. When a liquid crystal television shows a three dimensional (3D) image picture, the dimming delay time information matched with the switching time of the liquid crystal light valve is added in the dimming signal generated by a signal generation device, so that a phenomenon of picture tailing caused by delay generated in the process of switching the liquid crystal light valve can be eliminated. In addition, drive current increasing information and drive output duty ratio reduction information are added in the dimming signal, so that luminance displayed by the image picture can be improved, and the average power consumption of the LED backlight is invariable.

The embodiment of the invention provides a method for controlling gray scales, a gray scale control device and a liquid crystal display (LCD). The LCD comprises a plurality of pixels. The method comprises the following steps: acquiring luminance (L0) of the pixels at the end time of a current frame; according to the luminance (L0) at the end time of the current frame, acquiring drive gray scales of the pixels at a target frame, wherein the target frame is the next frame of the current frame; and outputting the drive gray scales out of the target frame, wherein the drive gray scales enable actual luminance of the pixels at the target frame to be equal to target luminance (L1) of the target frame and the target luminance (L1) can reach an expected value of human eyes, and the actual luminance is the luminance generated by integration of gray scale response time curves corresponding to the drive gray scales to times. Within the time of one frame, the gray scales are integrated to obtain the actual luminance of the target frame. Because the feeling of the human eyes for lights during a period is an average effect during the period, namely, the expected value of the human eyes, the actual luminance generated by adjusted drive gray scales can reach the expected value of the human eyes, thus being capable of eliminating smearing happening in the process of switching pictures.

The invention relates to an optimal active time-reversal focusing method based on iterative least square / pre-filtering. The method comprises the following steps: 1) sending source signals by a guide sound source, and conducting the operations of receiving, time-reversal and re-sending by a time-reversal array according to the conventional active time-reversal process, so as to acquire focusing signals at the location point of the sound source, wherein the source signals are wideband pulse signals with the bandwidth being 20Hz to 200kHz and the frequency range being within an audible sound or ultrasound frequency band range; 2) estimating a plurality of cascaded pre-filter time-domain responses used for carrying out the filtration treatment on the source signals on the basis of the iterative least square rule by combining the source signals and the focusing signals; and 3) re-sending the pre-filtered source signals by the guide sound source, and carrying out the operations of receiving,time-reversal and re-sending by the time-reversal array according to the conventional time-reversal process, so as to acquire the optimal focusing signal waveform at the location of the sound source.The invention can achieve the inverse-filtering and focusing effects within the time domains and recover the waveform of the source signals within the focusing region; the invention allows the randomdistribution of array elements and the difference in the frequency response among the array elements; and the invention has high spatial resolution.

The invention discloses an LED (light emitting diode) display large-screen high-speed scanning controller, which comprises an LED large-screen driving chip, a decoder and a controllable high-speed discharging circuit, wherein the LED large-screen driving chip is connected with the decoder, the decoder decodes control signals and is connected with a switch tube used as a power supply switch, the switch tube controls the voltage of a plurality of lines of LEDs, the controllable high-speed discharging circuit performs discharging on the output end when the switch tube is switched off. The LED display large-screen high-speed scanning controller has the advantages that the scanning line output falling edge can reach one microsecond, the controllable discharging is carried out on scanning lines, and the output end after the discharging can be controlled into a high impedance state. The trailing phenomenon is eliminated, the refreshing rate is improved, and the influence caused by LED electricity leakage and open circuit can be eliminated.

The present invention relates to a method and apparatus for performing motion adaptive frame averaging for ultrasound color flow images used to overcome lag and smearing alias of color due to motion. One embodiment of the present invention comprises an ultrasound machine for generating an color flow imaging responsive to moving tissue. The ultrasound system comprises a front end and at least one processor. The front-end is arranged to transmit ultrasound waves into the moving tissue, generating received signals in response to the ultrasound waves backscattered from the moving tissue. The processor is responsive to the received signals, calculating a motion factor by comparing at least one current b-mode frame with at least one previous b-mode frame, determining motion using at least the motion factor, increasing a level of frame averaging if the motion factor is below a first predetermined threshold, and decreasing the level of frame averaging if the motion factor is above a second predetermined threshold.

The invention relates to an optical fiber communication system, optical interconnection and a photoelectric detector, and in order to provide the photoelectric detector which is high in PN-joint photodiode responsibility, wide in intrinsic bandwidth, and capable of achieving full differential output and to improve the overall performance of a standard CMOS technological monolithic integration photo receiver, the photoelectric detector of a spatial modulation structure is characterized in that a shallow groove separation area is manufactured on a P-type substrate, photodiodes and shading diodes are arrayed in the shallow groove separation area at intervals, the photodiodes are formed by N-type well regions with medium dosage concentration and the P-type substrate, the shading diodes are formed by N-type well regions with medium dosage concentration, the P-type substrate and a second interconnected metal layer, N-type well contact areas with heavy dosing are sequentially arranged on the N-type well regions with the medium dosage concentration, and P-type substrate contact areas with heavy dosing are arranged on the periphery of the N-type well regions with the medium dosage concentration. A preparation method of the photoelectric detector is mainly applied to design and manufacturing of photoelectric detectors.

The invention discloses an LED backlight scanning control method and device for a liquid crystal display. The control method comprises: a step 1 of resetting and starting a delay counter when it is detected that a frame writing signal STV is enabled; a step 2 of resetting and starting a row synchronous counter when the delay counter overflows, and turning on a first light bar when the row synchronous counter overflows; automatically resetting and restarting the row synchronous counter, and turning off the first light bar and turning on a second light bar when the row synchronous counter overflows again; repeating the process and sequentially turning off a prior light bar and turning on a next light bar; and repeating the step 1 and the step 2. The device comprises a liquid crystal panel, an LED backlight light source, a backlight address counter, a backlight address decoder and a switch array module. The liquid crystal panel is divided into a plurality of pixel regions. The LED light source includes a plurality of LED backlight light bars in one-to-one correspondence with the plurality of pixel regions. The method and device provided by the invention has the advantages that: the ghosting phenomena of moving images are completely eliminated, the energy efficiency of the backlight light source is improved, and the flicker of backlight scanning is prevented.

A fluid collection device has a collection vial with a reservoir chamber for receiving a fluid sample. An elongated expresser is disposed within the collection via, which includes a fluid permeable base enabling passage of fluid sample into the reservoir chamber. A fluid test card is supported by an expresser bottom flange within the collection vial and a plunger is provided for compression of a swab saturated with fluid specimen into the reservoir chamber. A cap is provided for engaging the collection vial in order to seal the compressor, fluid test card, compressed swab, and plunger within the collection vial.

The invention discloses a gas sensor array multi-fault isolation algorithm based on reconstruction contribution. The gas sensor array multi-fault isolation algorithm comprises the steps or presettingthe number initial value of fault sensors and the judgment threshold value of the SPE statistical magnitude control limit for a gas sensor array; acquiring a fault signal of the gas sensor array, andconstructing all fault directions and a corresponding amplitude set; for each group of fault directions and corresponding amplitudes, solving reconstructed fault signals and SPE statistics; calculating a contribution rate based on the SPE statistics corresponding to the reconstructed fault signal, and determining a group of fault directions with the maximum contribution rate and the SPE statistics; judging whether the SPE statistic is smaller than a judgment threshold value or not; if not, adding one to the number of the fault sensors, updating the preset initial value of the number of the fault sensors, and performing iterative processing; and if so, outputting the determined current fault direction and the number of the current fault sensors. According to the method, the trailing problemof a traditional contribution graph method is well eliminated, mutual interference among multiple variables is avoided, and the accuracy of multi-fault isolation is greatly improved.

The invention relates to a wet method desulfurizing white smoke trailing treatment device and method. The treatment device comprises a booster fan, a desulfurizing tower, a reducing pipeline, a branch pipe network, a cooling water tank, a water collection tank, a draining pump, a valve, a chimney and a pipe. Flue gas is subjected to desulphurization in the desulfurizing absorbing tower through the booster fan, reducing is carried out through the pipe, then the flue gas goes into the water tank, heat radiation cooling exchange is carried out in the water tank through the branch pipe network, the temperature of the wet flue gas is lowered to about 40 DEG C from original about 55 DEG C, thus excess saturated vapor in the flue gas is condensed, the condensed water goes into the water collection tank and returns to the bottom of the desulfurizing tower for reuse, and the cooled flue gas is collected through the reducing pipe, goes into the chimney and is discharged. The excess water content in flue gas can be lowered, saturated vapor waste water is recovered, the desulfurizing tower white smoke trailing problem is solved effectively, the situation that residues in flue gas cannot pollute water resources is ensured, and secondary water treatment is avoided.

The invention discloses a monocular scene depth prediction method based on deep learning. The method is suitable for monocular pictures or videos, a calibrated binocular color image pair is used for training a depth prediction model, a DenseNet convolution module is used for extracting a feature space in a network architecture, and dense blocks and transition layers in the feature space are used,so that each layer in a network is directly connected with a front layer of the network, and repeated utilization of features is realized; binocular matching loss improvement, a depth prediction problem is regarded as an image reconstruction problem; the method comprises the steps of sampling an input left viewpoint color image and a disparity image to generate a virtual color image and a disparity image, and restraining the consistency of the generated virtual view and a correspondingly input right viewpoint image on an RGB level and a disparity level by utilizing a stereo matching algorithmof a binocular image pair, thereby obtaining a better depth; the depth smooth loss is improved, the high-quality dense depth map can be generated, the artifact problem caused by shielding in monocularscene depth prediction is effectively solved, and the 2D-to-3D conversion requirements of multiple indoor and outdoor real scenes can be met.

The invention discloses a method for improving the video quality and an implementing device thereof. The method has the following implementing steps of: obtaining a cost function InterCast of an inter-frame mode and a cost function Intra16x16Cast and Intra4x4Cast of two intra-frame modes by statistics; selectively entering a high code rate mode judging process according to a current code rate, or calculating a mode weighing punishment factor and entering a low code rate mode judging process; in a high code rate mode, comparing three cost functions and judging a mode decision result into a mode corresponding to the minimum; and in a low code rate mode, comparing InterCast + BSP with another two cost functions and judging a mode decision result into the mode corresponding to the minimum. Due to the application of the technical scheme of the invention, the high image quality can be kept under the condition of high code rate, the smear is effectively eliminated under the condition of low code rate, and the video quality is subjectively improved.

The invention discloses a reconstructed image trailing elimination algorithm applied to a high-speed pulse sensor. By identifying an trailing interval and calculating the proportions of two brightnessobjects causing trailing in the same triggering interval according to the mechanism of triggering and recovering the image gray scale of the pulse type high-speed camera, the boundary of the object in the trailing interval is recovered, trailing can be eliminated in the high-speed camera reconstructed video, and the quality of the reconstructed image is improved.

The invention discloses a current transformer which comprises an iron core, primary winding and secondary winding. At least one air gap arranged along a magnetic field line cutting direction is arranged on the iron core, and the sectional area of the iron core is 0.5cm<2> to 3.5cm<2>. The number of turns of the primary winding is 1 turn to 25 turns, and the sectional area of coils of the primary winding is 0.5mm<2> to 4mm<2>. The number of turns of the secondary winding is 10001 turns to 30000 turns, and the diameter range of the coils of the secondary winding is 0.05mm to 0.3mm. The current transformer has the advantages that when a primary current rises to 20 times to 6o times of a rated current, the current transformer can accurately transform direct current components with decay time constant of 20ms to 200ms, and can truly reflect a nonperiodic decay state, output waveforms of the current transformer are difficult to be saturate and are not distorted, and the trailing phenomenon generated by secondary waveforms after fault removal can be further eliminated.

The invention relates to a current transformer, which comprises a magnetic ring, a primary winding, a secondary winding and a shunt; wherein the shunt is connected with a circuit to be tested in series, the primary winding and the secondary winding are wound on the magnetic ring, the primary winding is connected with the shunt in parallel, and output signals of the secondary winding are used for measurement and analysis. The current transformer has a simple structure and cannot be easily interfered by an external magnetic field. True reflection of the attenuation state of the maximum aperiodic component, and elimination of secondary smearing after cutoff of faults can be realized according to optimal selection of parameters. The current transformer can be applied in waveform following and combining units after fault recording and reclosing multiple times, as well as traditional relay protection and primary current transformers.

The invention discloses a method for measuring the concentration of molecular targeted drugs in plasma by using ultra-high performance liquid chromatography tandem mass spectrometry. The method comprises the following steps of respectively dissolving anlotinib, ceritinib and ibrutinib by adopting acetonitrile in order to prepare a standard curve working solution, and dissolving diazepam by adopting methanol in order to prepare an internal standard substance working solution; respectively adding 0-5 microliters of standard curve working solution into blank plasma to make up to 50 microliters, carrying out vortex to prepare a standard curve plasma sample, adding the internal standard substance working solution, carrying out vortex and centrifugation, taking supernate, carrying out UPLC-MS / MSquantitative analysis, and drawing a standard curve; and precisely sucking to-be-detected plasma with the concentration of 50 microliters, adopting the same sample pretreatment method, and measuringthe concentration of the anlotinib, the ceritinib and the ibrutinib according to a standard curve of the batch. According to the method, the blood concentration of various anti-tumor molecular targeted drugs can be measured simultaneously, the method is high in sensitivity, strong in specificity, rapid and good in reproducibility and is suitable for clinical high-throughput simultaneous detectionand monitoring of various anti-tumor molecular targeted drugs.

The invention discloses a method and a system for adaptively recursively denoising a digital video signal. Key technology is that: a recursion coefficient k set by a user is corrected to obtain a corrected coefficient k_adj; if an absolute difference value diff_fwd between corresponding pixels in a current image t and a previous image t-1 is more than or equal to the absolute difference value diff_bwd between the corresponding pixels in the current image t and the next image t+1, k_adj is equal to k; if the absolute difference value diff_fwd is less than the absolute difference value diff_bwd, the corrected coefficient k_adj is less than k; and the pixel G (i, j, t) in the current image t is denoised by adopting the corrected coefficient k_adj. In the method and the system, the information of the image t+1 after a current time is introduced to correct the recursion coefficient k. The method and the system provided by the invention can well eliminate the trailing phenomenon, produced by recursive denoising, of a moving object.

The invention provides a moving target detection method and device, equipment and a readable storage medium. The method comprises the steps of obtaining a video sequence frame image; performing movingtarget detection on the current frame image by adopting a Gaussian mixture model to obtain a first moving target binary image and a current frame background image; performing moving target detectionaccording to the current frame of background image and the five frames of images corresponding to the current frame of image by adopting an improved five-frame difference algorithm to obtain a secondmoving target binary image; performing OR operation on the first moving target binary image and the second moving target binary image to obtain a total moving target binary image; and performing morphological processing on the total moving target binary image to obtain a moving target. The moving target detection accuracy of the improved five-frame difference algorithm is improved, the existing smear problem is basically eliminated, or operation is carried out on the moving targets detected by the two algorithms to obtain all the moving targets detected by the two algorithms, and the detectedmoving targets can have complete contours.

The invention discloses an image smear elimination method, an electronic device and a storage medium. The method includes acquiring a smear area in a first image and a target area corresponding to thesmear area; Moving a smear image located in a smear area to a target area, wherein the target area is provided with a target image; superimposing The smear image and the target imaged, and processingthe superimposed image to eliminate the smear image in the first image to obtain a second image. In the manner described above, the present application is capable of eliminating smear in an image andimproving image quality.

The embodiment of the invention discloses a smear elimination method, a terminal and a storage medium, and the smear elimination method comprises the steps: obtaining the image information of an initial image, and determining a target area in the initial image according to the image information; wherein the target area is used for determining pixels generating a smear phenomenon; performing brightness detection on adjacent pixels corresponding to the target area to obtain brightness parameters; judging whether the target area meets a preset smear condition or not according to the brightness parameter; if the preset smear condition is met, performing correction processing based on the target area to obtain a corrected image corresponding to the initial image; and displaying the corrected image to eliminate a smear phenomenon.

The invention discloses a wire-cut electrical discharge machining (WEDM) nanosecond pulse power supply system, which comprises a power supply body. The power supply body comprises a microcontroller system module, a rectification module, an electric energy conversion module and a high-frequency pulse module. One end of the microcontroller system module is externally connected with an auxiliary power supply input interface and a plurality of input / output interfaces. The input / output interfaces comprise a pulse output enable input interface, a wire speed control interface, a configuration number interface and a communication interface. The other end of the microcontroller system module is connected with the electric energy conversion module and the high-frequency pulse module; the electric energy conversion module and the high-frequency pulse module are connected mutually; one end of the rectification module is externally provided with a power supply input interface; the other end of the rectification module is connected with a pulse output interface and the high-frequency pulse module; and the other end of the high-frequency pulse module is externally connected with the pulse output interface. The system realizes stable voltage and current, small single pulse energy output and good workpiece cutting surface smoothness.

The invention discloses an HPLC analysis method for measuring minocycline and related substances thereof. According to the HPLC analysis method, a chromatographic column Zorbax Extend C18 (250 mm*4.6 mm, 5 micrometers) is adopted, a methanol-acetonitrile-acetate buffer solution serves as a mobile phase, under appropriate ultraviolet detection wavelength and flow velocity, the content of the minocycline is measured through an external standard method, and the content of the related substances of the minocycline is measured through a principal component self-contrasted method. By means of the HPLC analysis method for measuring the minocycline and the related substances thereof, baseline separation of the related substances can be well achieved, the content of the minocycline and related substances thereof can be accurately measured, the method is simple, high in specificity, short in detection time, high in precision and good in repeatability, and a foundation is established for enacting a quality standard of the minocycline.