60results about How to "No blur" patented technology

The invention discloses a reactive emulsifier amphiprotic styrene surface sizing agent and a preparation method thereof; the molecular structure of the reactive emulsifier amphiprotic styrene surface sizing agent is shown as the accompanying drawing. The preparation method of the reactive emulsifier amphiprotic styrene surface sizing agent comprises the following steps that: first, polyethylene glycol, stearic acid and maleic anhydride react to obtain maleic acid polyethylene glycol single-stearic acid ester; then ammonium persulfate serves as an initiator, and maleic acid polyethylene glycol single-stearic acid ester, styrene, acrylic acid, methacryloyloxyethyl trimethyl ammonium chloride and acrylonitrile are prepared into the reactive emulsifier amphiprotic styrene surface sizing agent through copolymerization reaction; and the obtained reactive emulsifier amphiprotic styrene surface sizing agent is characterized by excellent integration with fibers, reduced hair and powder drop, higher seizing degree, high surface strength, good ink absorbability, capability of adapting to high-speed printing and the like.

The invention relates to a cylindrical beam large visual field X-ray computed tomography (CT) imaging system. The system consists of a radiation source system, a capillary modulation system, a sample platform system and a detector system which are sequentially and coaxially connected in an optical way, wherein a capillary device which is used for forming a modulation radiation source so as to enable a cylindrical beam X-ray to be formed by the modulation radiation source is arranged between imaging target samples of the radiation source system and the sample platform system; an X-ray source of the radiation source system is connected with a capillary tube of the capillary modulation system, so that a cylindrical parallel beam is obtained; the detector system is used for acquiring data by adopting a multi-channel signal processor. According to the imaging system, the radiation source system and the detector system are fixed, a rotary table can rotate, the radiation source is capable of emitting the cylindrical beam X-ray after being modulated by the capillary modulation system, and the conventional scanning can be completed for once only by rotating the sample platform at 180 degrees, so that the acquired data is complete; parallel beam is used for reconstruction, and the reconstruction belongs to accurate reconstruction; compared with the conventional system, the cylindrical beam large visual field X-ray CT imaging system is capable of shortening half of the scanning time.

The invention designs electrostatic focused femtosecond stripes disguise tube, the disguised tube cathode 1 being a circular plate-shaped; the main-body of grid 2 being the cylindrical shape, the end having a outer convex station 21, the convex station 21 having a grid network; the focused electrode 3 using cylindrical structure; the end of the anode 4 near the focused electrode 3 being bowl structure, the small end surface of the bowl structure having a center hole 43, and the end near the deflector plate 5 being cylinder shape structure; the deflector plate 5 being a pair of tilted strip plate; the diameter of the main-body of grid 2 compared with the diameter of the focused electrode 3 being ratio of 1.1~2.8. Through the said structure, and using Monte Carlo method for sampling, using the finite difference method to calculate the electron distribution, using four bands Runge-Kutta method to simulate and trace a large number of photoelectrons trace for statistic and analysis, and finally it provides the basic parameters of the disguised tube space modulation transfer function and time distinguish ability.

The invention discloses metronidazole ophthalmic gel and a preparation method and an application thereof, which belong to the technical field of medicine. Metronidazole serving as a related medicinal active ingredient is prepared into ophthalmic gel for the first time. The metronidazole ophthalmic gel is applied to prevention and treatment of blepharitis ciliaris, hordeolum and conjunctivitis caused by worm acarus infection, and a dry eye syndrome caused by meibomian gland dysfunction, and is applied to prevention and treatment of infection of acanthamoeba protozoan and anaerobic bacteria in the wearing process of corneal contact lenses. The metronidazole ophthalmic gel consists of metronidazole and a pharmaceutically-acceptable vector, and the using amount of metronidazole in every 100g of the metronidazole ophthalmic gel is 0.1-3.0g by weight.

The invention relates to an acrylate emulsion used for vacuum aluminum plating and laser embossing and a preparation method thereof. The emulsion comprises the following components in parts by weight: 1-6 parts of polymerizable carboxylic acid, 18-80 parts of methacrylate, 12-50 parts of acrylate, 5-20 parts of silicon-including cross-linkable monomer, 2-4 parts of polymerizable emulsifier, 0.3-0.7 parts of pH buffer agent, 0.3-0.7 parts of initiator, 0.4-2.5 parts of neutralizer and water, wherein the weight ratio of the water to the total weight of the polymerizable carboxylic acid, the methacrylate, the acrylate, the silicon-including cross-linkable monomer and the polymerizable emulsifier is (1-1.5):1. According to the method provided by the invention, the polymerizable emulsifier is used; the prepared acrylate emulsion does not include a micromolecular emulsifier; the migration of the emulsifier does not exist in a later film forming process; furthermore, polymerizable silane is introduced in a polymerization process; and the degree of cross linking of the acrylate emulsion is improved, so as to give the advantages of high temperature resistance, no migration of the emulsifier, incapability of causing the filling in of a molded blackboard, and the like, to an emulsion film.

The invention provides a three-dimensional display system. The display system comprises orientation backlight, multilayer liquid crystal sheets, a horizontal direction diffuser, a vertical direction diffuser and a raster. The orientation backlight is used for emitting light. A first layer of liquid crystal sheet, the horizontal direction diffuser, the other layers of liquid crystal sheets except for the first layer of liquid crystal sheet, the raster and the vertical direction diffuser are successively arranged along a light propagation direction. By using the three-dimensional display system,the light emitted by the orientation backlight generates an orientation light cluster through a combined effect of the liquid crystal sheets and the diffusers, and the light is ensured to fall on anassigned viewpoint so that double images and fuzzy images are not generated. The orientation light cluster can form a correct watch vision area, the vision area is not changed and parallax inversion is not generated. Each pixel can emit a plurality of different light to different directions, a display visual angle is enlarged and a display resolution is greatly increased.

A color noise removing method and device are disclosed. The method comprises the following steps: a first image is obtained, the first image is image data which is obtained after an image in a sliding window is subjected to self-adaption downsampling processing operation, a pixel point value domain coefficient of the first image is determined according to pixel points of the first image and U and V component values of pixel points to be de-noised, and a pixel point spatial domain coefficient of the first image is determined according to spatial distance between the pixel points of the first image and the pixel points to be de-noised; a weighting coefficient is obtained based on the pixel point value domain coefficient and the pixel point spatial domain coefficient; based on the weighting coefficient, the U and V components of the pixel points to be de-noised are subjected to color noise processing operation. According to the method, via the self-adaption downsampling processing operation, frequency of color noise of the image in the sliding window is improved, the color noise can be removed easily, and therefore computation quantities can be reduced and computational performance can be improved; problems of color aliasing and saturation decline that occur in color noise removing processes can be effectively addressed, effects exerted by brightness information can be reduced, image brightness information vagueness can be prevented, and the color noise removing method and device are low in complexity and easy to realize.

The invention discloses a method recovering texture and illumination of a calibration plate sheltered area. The method recovering the texture and the illumination of the calibration plate sheltered area includes a first step of shooting a reference image and a calibration reference image, a second step of establishing a plane homography relation, a third step of repairing texture, a fourth step of repairing the illumination, a fifth step of judging whether video shoot is finished or not by means of a method of man-machine interaction, executing a sixth step, returning to the second step when the video shoot is not finished, and the sixth step of finishing the process of recovering the texture and the illumination of the calibration plate sheltered area. The method recovering the texture and the illumination of the calibration plate sheltered area has the advantages of being accurate and rapid in recovering result, high in robustness and appropriate for various applications augmenting reality.

The invention belongs to the field of visual tracking and discloses a visual tracking system and method. The system comprises an image acquisition device, a light path conversion device and a light path adjustment device. The image acquisition device comprises a first camera and a second camera which are fixed in relative positions, and the first camera is used for acquiring an image and performing visual tracking to predict the position of a to-be-tracked target. The light path conversion device is arranged between the to-be-tracked target and the second camera and is used for clearly imagingthe to-be-tracked target on the second camera. The light path adjusting device adjusts the light path of the light path conversion device in real time according to the position of the to-be-tracked target, so that the target is always located at the imaging center of the second camera. The visual tracking method comprises the following steps: obtaining each frame of image by using a first cameraand carrying out visual tracking to predict the position of a target in each frame of image; and adjusting a light path in real time according to the position of the target to clearly image the targetat the center of the second camera. The method has the advantages of high speed, high robustness, good adaptability and the like.

Disclosed is a color noise reducing method, device and image processing system. The method comprises, based on the Y, U and V component values of a pixel point to be denoised with every pixel point, determining the range coefficient corresponding to every pixel point, wherein the pixel point to be denoised is in the center of a sliding window; based on the spatial distance between every pixel point in the sliding window and the pixel point to be denoised, determining the spatial coefficient corresponding to every pixel point; based on the range coefficient and the spatial coefficient, which correspond to every pixel point, obtaining the weighting coefficient corresponding to every pixel point; based on the weighting coefficient corresponding to every pixel point, performing color noise reducing treatment on the U component and the V component of the pixel point to be denoised. The color noise reducing method can reduce the problem of color mixing and saturation reduction generated during color noise reduction and avoid influence on the brightness information of images and is low in complexity and easy to implement.

Disclosed is a composition that is curable by cationic polymerization initiated by active energy beam, which is not affected by humidity of atmosphere and has superior curing property and superior adhesion property to a recording material, while being able to provide long storage stability without inhibiting curing property. Also disclosed is an image forming method using the composition, the method being able to provide a high quality image with no blur. Accordingly, the composition that is curable by cationic polymerization initiated by active energy beam, in which a cation polymerizing compound includes at least a cationic polymerization initiator, has a moisture content of 2.5 parts by mass or less, according to Karl Fisher method.

A screen that displays images as a result of receiving projection light, includes: a plurality of plate components that are optically transparent and are provided apart from each other; a scatterer that is placed in a light scattering space that is formed between the plurality of plate components, and is formed by dispersing a light scattering material in a gas or liquid dispersion medium; a flow path that allows the scatterer to flow through the light scattering space; and a flow device that causes the scatterer to flow through the light scattering space.

The invention, which belongs to the technical field of target detection, particularly relates to a method for detecting and locating weak signals of a static radiation source target. The invention provides a method capable of remarkably improving the static target signal detection probability. The method comprises the following steps: dividing search grid points in an area in which a signal sourcemay exist and calculating time delays and azimuth angles of the grid points and all radars; according to azimuth angle information, acquiring a synthetic signal, received by each passive radar, of asignal source located on a grid point by using a digital beam forming technology; acquiring the cross-correlation spectrum peaks of the synthetic signals of the signal sources of all receivers according to the time delay information; and then whether all signal sources are real signal sources or not is determined by using constant false alarm detection method and geographical position informationof the real signal sources is obtained at the same time.

The invention discloses a remote transmission method of a digital pathological section, which is suitable for being used among a section scanning terminal, a WEB server and a client which are remotelyconnected with one another through a network, and comprises the following steps: S1, the section scanning terminal acquires a current digital pathological section image through scanning; S2, in caseof urgent need, the section scanning terminal receives a request of the client and directly sends the digital pathological section image obtained by current scanning to the client; and S3, under a non-urgent need condition, the section scanning terminal uploads the digital pathological section image obtained by scanning to the WEB server in a backup manner, and then the WEB server sends the requested digital pathological section image to the client only after receiving the request of the client. The method can effectively solve the problem that in the prior art, the requirement that reports cannot be sent out within limited time during emergency treatment due to the fact that the time for uploading the remote pathological diagnosis slices to the network server is too long.

The invention belongs to the technical field of laser detection, and in particular relates to a high signal-to-noise ratio detection device and a high signal-to-noise ratio detection method applied tonear field measurement of high power laser. The detection device comprises a CCD sensor, a pre-amplification and pre-processing unit, a sampling conversion mechanism, an FPGA controller, a PHY chip and an optical fiber network interface. The detection device provided by the invention is mainly used for performing near field measurement of high power laser, can well detect the laser with differentstrength distribution, and thus accurate near field measurement is achieved. Meanwhile, the detection device aims at the high signal-to-noise ratio requirement when the high power laser is subjectedto near field measurement, can achieve imaging with a high dynamic range, a high signal-to-noise ratio and low uniformity, and can stably output a high quality laser measurement image. In addition, the detection device can flexibly select a sampling position and efficiently process sampling data, so that the flexibility of data processing is also greatly enhanced while the signal-to-noise ratio ofthe image is improved.

The invention discloses a multi-line scanning distance measurement method and system, the system comprises an emitter, a collector and a processing circuit, the method comprises the following steps: the collector emits a pulse subset comprising n pulse beams towards a target, and adjacent pulse beams in the pulse subset have a certain time interval, wherein the time interval is set according to the divergence angle and scanning speed of the pulse beam; the collector collects photons in each pulse beam in the pulse subset reflected by the target and generates a photon signal subset; the processing circuit receives the photon signal subset and processes the photon signal subset to form a histogram, wherein the histogram comprises a detection signal subset formed by n detection signals representing a reflected pulse subset; and delay accumulation processing is performed on the detection signal subset to obtain the flight time of the pulse beam from emission to reception, and the distanceinformation of the target is solved by using the flight time.

The invention discloses an elimination method for eliminating the stripe noise of an infrared image. The method comprises the following steps of 1, inputting an original infrared image; 2, setting an iteration times K, an iteration sequence number K and conducting the iteration initialization; 3, calculating an infrared image X k (i, j) after the k correction process; 4, calculating the module (img file = 'DDA 0001218487710000011. TIF 'wi = '172 'he = '79'/) of the infrared image gradient after the k correction process; 5, updating correction parameters Gk(j) and Ok(j); 6, judging whether the condition of k < K is satisfied or not; 7, outputting a final infrared image XK (i, j). The method of the invention is novel in design and simple in step. For the stripe noise generation mechanism of the infrared image, correction parameters are estimated through minimizing the energy function of a correction image. Meanwhile, the stripe noise of the image is corrected through linear transformation. Therefore, the stripe noise of the image can be eliminated only by utilizing the infrared image itself. In this way, the periodic calibration of a focal plane array by means of a black body is not required. On the premise that the stripe noise of the infrared image is effectively eliminated, the blurring phenomenon of image details is avoided. The method is small in calculation amount, good in real-time performance and convenient to popularize and use.

The embodiment of the invention discloses an SAR image change detection method and device. Two SAR images are divided into a reference image and a test image. The two images are overlapped and divided to acquire reference image blocks and test image blocks. Each image block is corresponding to a sparse value. By constructing a local dictionary and using an orthogonal matching pursuit method, the sparse estimation value of each test image block is solved. According to the sparse estimation value of each test image block and the sparse value of each reference image block, a ratio image is constructed. Median filtering is carried out on the ratio image to acquire a median ratio image, namely the change detection result image of the SAR images. The SAR images are overlapped and divided, which improves the detection accuracy of SAR image change detection. The characteristics of the median ratio image are used. The influence of noise on the detection accuracy can be greatly reduced. The detection accuracy of SAR image change detection is further improved.

The invention provides an outdoor natural scene illumination estimation method and device, and relates to the technical field of image processing. The method solves the problems that in the prior art, the illumination expressive force based on parameter reconstruction is limited, the light intensity shot in all directions cannot be effectively expressed, and the requirement of a deep neural network for diversified data cannot be guaranteed, and illumination information corresponding to different positions in the picture cannot be estimated. The device comprises a synthetic data acquisition module, an intrinsic image decomposition module, an image space to panoramic space mapping module and a panoramic illumination information complementation module. By generating high-quality urban scene illumination acquisition data in batches, outdoor illumination estimation is changed from only global illumination estimation to global illumination and local illumination estimation. By collecting and screening the synthetic data, the data acquisition difficulty and time are greatly reduced, and the application range of the algorithm is expanded. In addition, a deep learning method is adopted, so that the illumination estimation quality is effectively improved.

The invention provides a real-time high-dynamic imaging method and imaging system, and solves the problems that an existing dynamic range extension method cannot meet the application occasions with high real-time requirements and small time delay, calculation results have large errors, and high-dynamic images are blurred. The method comprises the following steps: 1, enabling an image detector to output high-gain and low-gain image data; 2, performing Gray code-binary code conversion on the high-gain image data and the low-gain image data; 3, obtaining weights of the high-gain image and the low-gain image; 4, fusing the high dynamic range images; 5, performing high dynamic range image mapping; 6, storing the mapped high dynamic range image data in a cache unit; 7, reading cache unit data, and packaging and encoding the mapped high dynamic range image data; and 8, sending the packaged and encoded image data to an output unit for outputting.

The embodiment of the invention discloses a video code stream processing method and device, equipment and a storage medium. The method comprises the following steps: encrypting a scrambling key original text by adopting a key of a next node to obtain a scrambling key ciphertext; sending the scrambling key ciphertext and the scrambling code stream to the next node, so the next node determines the scrambling key original text, wherein the scrambling key original text is used for descrambling the scrambled code stream to obtain a target code stream. By the adoption of the scheme, the operation iseasy and convenient, and the transmission processing is carried out on the scrambled code stream; only the code stream sending end and the code stream receiving end are required to negotiate the secret key; the generated scrambling secret key is encrypted; the scrambling code stream and the scrambling secret key can be transmitted at the same time; in the whole process, the scrambling or descrambling of the scrambled code stream can be realized without using a key server and a management server to obtain a scrambling key, the normal transmission of the scrambled code stream can be realized, and since the scrambling key cannot be obtained from the server, any node can normally decode without generating a blurred screen.

The invention discloses a cation styrene-acrylic surface sizing agent and a preparation method thereof. The molecular structure of the cation styrene-acrylic surface sizing agent is shown in the specification. The preparation method of the cation styrene-acrylic surface sizing agent comprises the following step of carrying out polymerization by using polyvinyl alcohol 1799 as a dispersing agent, using ammonium persulfate as an initiator and using phenylethylene, methyl methacrylate, ethyl acrylate, allyl alcohol and methacrylatoethyl trimethyl ammonium chloride as mixing monomers to prepare the cation styrene-acrylic surface sizing agent. The obtained cation styrene-acrylic surface sizing agent has the characteristics of good combination with fibers, reduction of hair and powder slip, improvement of sizing degree, high surface strength, good ink adsorption, adaptation to high-speed printing and the like.

The invention provides an interaction method, which relates to the field of human-computer interaction. The method comprises the following steps: receiving a first instruction sent by a second device;identifying a current first device demonstration scenario; when the first device demonstration scene is a first scene, a second instruction is generated according to the first instruction, and the second instruction is sent to the first device. The invention also provides an interactive device and a system. The invention receives the instruction of the speaker to operate the demonstration device,and then performs differential display in combination with the demonstration scene displayed by the current touch device. Moreover, the remote interaction between the presentation device and the touch device enables the speaker to perform the presentation, so that the speaker can clearly explain the contents of the presentation to the audience. No blurring or blurring of the presentation cursor occurs.