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148results about How to "Resolve overlap" patented technology

Regional people stream density estimation method based on pixels and support vector machine (SVM)

A regional people stream density estimation method based on pixels and a support vector machine (VCM) is characterized by comprising the following steps: extracting a background from a video to be processed; performing background subtraction and binary calculations on a target image, counting the number of non-zero pixel values, and judging and performing background updating; computing a perspective correction coefficient with a perspective correction algorithm based on interpolation weight, and improving effect from perspective distortion to the algorithm; counting the number of the pixels after being corrected through the perspective correction coefficient; using a pixel-based method to estimate a people stream density when the number of the pixels is smaller than the number of normal people stream density pixels; and graying the target image when the number of the pixels is larger than the number of the normal people stream pixels, and extracting texture information of the target image and recognizing the target image by categories with the VCM so as to estimate a people stream density. The regional people stream density estimation method based on the pixels and the VCM can be used for people stream density monitoring in a region with a larger area, and has the advantages of being fast, convenient, accurate, reliable, and capable of timely providing a decision-making basis for an administrative department.
Owner:昆山南邮智能科技有限公司

Artificial climate system for soil-vegetation-atmosphere continuous system model test

The invention relates to an artificial climate system, and particularly relates to an artificial climate system for a soil-vegetation-atmosphere continuous system model test, belonging to the field of environmental geotechnics. The artificial system can simulate the natural change of climate environments such as wind, rain, illumination, temperature, humidity and the like. The artificial climate system consists of an artificial climate box body, a box body liner, a light source, a rainmaking device, an intelligent control system, a multi-channel converter, an airflow circulation system, a rainwater circulation system, a temperature/humidity regulation system, a CO2 and O2 regulation system, a climate parameter sensor group and a digital imaging system. The system can realize automatic feedback regulation of the rainfall intensity, the illumination direction and intensity, the wind speed and direction and the temperature and humidity. Meanwhile, by adopting a top-rotatable rainfall illumination integrated device, the problem of position overlapping of the rainfall device and the illumination device is solved, and the uniformity of the illumination intensity and rainfall intensity in the horizontal plane is guaranteed.
Owner:INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI

Method for synthesizing virtual sight points of vehicle-mounted multi-lens camera looking-around system

The invention provides a method for synthesizing virtual sight points of a vehicle-mounted multi-lens camera looking-around system. The method comprises the following steps that S1, a left sight point reference image and a right sight point reference image are input in the looking-around system and disparity estimation is conducted so that a left sight point depth map and a right sight point depth map can be obtained; S2, according to the left sight point depth map and the right sight point depth map, a left sight point predicated depth map and a right sight point predicated depth map are generated respectively and correspondingly; S3, according to the left sight point reference image, the right sight point reference image, the corresponding left sight point predicated depth map and the corresponding right sight point predicated depth map, a left sight point predicated map and a right sight point predicated map are respectively generated; S4, a virtual sight point image is synthesized through the left sight point predicated map and the right sight point predicated map. According to the method for synthesizing the virtual sight points of the vehicle-mounted multi-lens camera looking-around system, the thought of a depth credible image is introduced, a shielding image is generated through the depth credible image, and the shielding image can clearly and accurately describe the information that interpolation information should come from which specific zone of which sight point when the virtual sight point image is synthesized. Theories and experiment results prove that a shielding zone can be effectively obtained through the method and the quality of the synthesized virtual sight point image is improved. However, according to existing methods, detection can not be conducted effectively and the virtual sight point image with the high quality can not be obtained.
Owner:XI AN JIAOTONG UNIV

X-ray light field imaging and calibrating method based on pinhole array

The invention discloses an X-ray light field imaging and calibrating method based on a pinhole array. The X-ray light field imaging and calibrating method based on the pinhole array comprises the steps that (1) An X-ray light field imaging model based on the pinhole array is established and comprises an X-ray light source array, the pinhole array and an X-ray image sensor; (2) a linear exposure mapping image is established so that exposure of images of an X-ray light field can be normalized; (3) the pinhole center of each X-ray light field image is calibrated so that the central position of each pinhole image is extracted; (4) according to the center, obtained in the step (3), of each pinhole image, each X-ray light source image is extracted; (5) according to each X-ray light source image extracted in the step (4), the pixels at the same position in the pinhole images are extracted and reorganized into a frame of X-ray light source image; (6) the extracted X-ray light source images are converted into X-ray light source images which are orthogonally arranged. According to the X-ray light field imaging and calibrating method based on the pinhole array, the light field imaging principle of visible light is applied to X-ray imaging, and the requirement for the imaging quality of the X-ray images during clinical diagnosis and treatment is met.
Owner:ZHEJIANG GONGSHANG UNIVERSITY

Continuous multi-screen capturing method and human-computer interaction mode thereof

The invention discloses a continuous multi-screen capturing method, which comprises the steps of (S1), calling a screen capturing command, completing capturing for the current screen, enabling the captured screen to act as an initial screenshot image; (S2), calling a screen scrolling command, and scrolling the current screen; (S3), capturing the scrolled screen to act as a scrolled screenshot image; (S4), detecting edges of the scrolled screenshot image and the initial screenshot image, and synthesizing the scrolled screenshot image and the initial screenshot image into a synthetic image in which only required content is reserved, and then enabling the synthetic image to act as a new initial screenshot image; (S5) repeating the step (S2) to the step (S4) until capturing and synthesis are completed. The continuous multi-screen capturing method solves a problem that disordering and overlapping exist when screen capturing is carried out on continuous multi-screen content in the prior art, the operation experience of users is improved, defects of an existing scheme are made up, the integrity, the uniformity and the operability of a final screenshot image are realized, and a requirement of the users for long screenshots is met.
Owner:成都风来科技有限公司

Nano silver loaded graphene antibacterial composite material and preparation method thereof

The invention relates to the field of graphene composite materials and discloses a nano silver loaded graphene antibacterial composite material and a preparation method thereof. A single-layer graphene oxide solution is obtained through a secondary ultrasonic dispersion technology and a discontinuous sheet layer is prevented; a carbon cake formed by mutually mixing a plurality of layers of graphene oxide sheets is innovatively subjected to secondary hydrothermal method reaction; green reduction agents including glucose and ascorbic acid and a green stabilizer soluble starch are adopted respectively and the hydrothermal method reaction is matched, so that the reduction rate is extremely improved and a sealing system with relatively high temperature and inner pressure is adopted; the recycling of dehydrated p conjugation is also promoted and the minimization of defects is facilitated; after heat treatment is carried out, the structure of graphene is easy to recover; the antibacterial activity of free Ag nanoparticles is remained in the composite material. The loading amount of silver particles in the nano silver loaded graphene antibacterial composite material reaches 58.0 percent and the antibacterial rate on escherichia coli reaches 99.9 percent.
Owner:郴州博太超细石墨股份有限公司

A device and method for determining a critical petroleum inclusion reservoir forming moment based on a time-resolved fluorescence spectrum

ActiveCN107290322AResolve overlapDetermining the critical moment of accumulationFluorescence/phosphorescenceMicro imagingTime delays
A method for determining a critical petroleum inclusion reservoir forming moment based on a time-resolved fluorescence spectrum is disclosed. The method includes a step of building a laser induced time-resolved fluorescence spectrum measuring system; a step of data mining of 'micro-oil' and 'macroscopic-oil' multi-dimensional spectroscopic data based on time-resolved fluorescence; and a step of determining a critical oil and gas reservoir forming moment. A device for determining a critical petroleum inclusion reservoir forming moment based on a time-resolved fluorescence spectrum is also disclosed. The device includes the time-resolved fluorescence spectrum measuring system, a time delay system and a micro-imaging system. Based on three-dimension fluorescence spectrum information, information of fluorescence intensity changes of a plurality of polycyclic aromatic hydrocarbons along with time is increased to form a multi-dimensional fluorescence spectrum, a spectrum overlap problem can be effectively overcome, and component analysis of the polycyclic aromatic hydrocarbons in an inclusion can be achieved in a real sense, thus determining the critical petroleum inclusion reservoir forming moment and overcoming a problem that extraction of organic components in single petroleum inclusion is difficult and other problems.
Owner:WEIFANG UNIVERSITY

Distance measurement system and method

The invention discloses a distance measuring system, which comprises an emitter, a collector and a processing circuit, wherein the emitter and the collector are arranged along a baseline, the emittercomprises a light source array composed of a plurality of light sources, the light source array comprises a plurality of sub light source arrays, the sub light source arrays are configured to be started one by one in the baseline direction to emit spot light beams, the collector comprises a pixel array composed of a plurality of pixels, the pixel array comprises a plurality of sub-pixel arrays, the plurality of sub-pixel arrays are configured to collect photons in a light beam reflected back by the spot light beam through a to-be-measured target object and form a photon signal, the processingcircuit comprises a plurality of sub-processing circuits, and the sub-processing circuits are connected with the sub-pixel arrays in a one-to-one correspondence mode so as to control pixels in the sub-pixel arrays to be started, collect photons in the reflected light beams and calculate flight time. According to the invention, the spatial resolution is improved, the problem of superpixel overlapping is solved, and the distance measurement precision is improved; and the process cost and the complexity are effectively reduced.
Owner:ORADAR TECH CO LTD

Assistant spooling gear of mooring winch

The invention discloses an assistant spooling gear of a mooring winch. A leading screw (4) and a polished rod shaft (9) are arranged between two lateral bases; one end of the leading screw (4) is provided with a big gear wheel (7); a center hole of the big gear wheel (7) is provided with a pin shaft; the pin shaft is provided with a curved handle (5) in a dismountable mode; the outer side of the big gear wheel (7) is provided with a small gear wheel (6) in a matching mode; a center hole of the small gear wheel (6) is fixedly provided with a second pin shaft; the leading screw (4) is provided with a roller wheel rack which rotates along with the leading screw to realize reciprocation, and the upper part of the roller wheel rack is erected with a vertical roller wheel (1) wit a longitudinal axial direction; and the roller wheel rack is sleeved on the polished rod shaft (9). The assistant spooling gear is mainly used in the processes of shipping and ocean engineering mooring and anchoring winch mooring rope recycling, and mooring ropes are arranged in order on a rope roll through manpower assistance. The assistant spooling gear can effectively solve the spooling problems of extrusion, overlapping, knocking over and the like during recovering the mooring ropes because the arrangement of the mooring winch cannot automatically realize neat keeping of the mooring ropes due to limited deck area.
Owner:DALIAN SHIPBUILDING IND

High-spectral-imaging-based field pest monitoring and trapping device

ActiveCN106489876AResolve overlapOvercoming the impossibility of counting accuratelyInsect catchers and killersAgricultural scienceTrapping
The invention discloses a high-spectral-imaging-based field pest monitoring and trapping device. The device comprises a pest killing device, a sampling device and a terminal machine; the sampling device is a hyper-spectrometer camera; the device also comprises a pest discharge device, a conveying device and a power device; the pest discharge device comprises a housing whose top part is provided with a pest inlet connected to the pest killing device and bottom is provided with a pest outlet; a hollow mandrel which extends into the housing; a pest discharge wheel which is rotationally installed on the hollow mandrel and whose periphery is provided with pest discharge holes which are communicated with the inner chamber of the pest discharge wheel, and the inner chamber of the pest discharge wheel is communicated with a negative device through the hollow mandrel; a absorption stop valve which is fixedly mounted on the hollow mandrel and can seal pest discharge holes that are going to discharge pest. The device can solve the problems of inaccurate counting and variety identification due to overlapped pest bodies; by means of the device, not only the number of pest can be counted, but also the varieties, sex and instar of the pest can be identified, which can predict and discriminate field pest situation more accurately.
Owner:ZHEJIANG UNIV

CT imaging method using tilted multi-cone-beam linear track

The invention relates to the technical field of X-ray CT imaging testing, which discloses a CT imaging method using a tilted multi-cone-beam linear track. The imaging method comprises the steps of: projection acquisition, wave filtering and back-projection reconstruction, wherein during the projection acquisition, a detector receives rays from a ray source so as to obtain the sequence of digital ray projective images; during the wave filtering, specified filter function and ray projection are subjected to convolution operation to obtain the data of the filtered projection; and during back-projection reconstruction, the weighted back-projection reconstruction of the data of the filtered projection is conducted according to the system parameters. In the method of the invention, a scanning mode using the tilted multi-cone-beam linear track is adopted, multiple cone beams are aslant installed in different places, an object to be tested passes through all the cone beams in linear motion, the detector collects the rays which pass through the object in different directions, and thus the scanning process is simple, and the scanning rate is high; because of the back-projection reconstruction method, the reconstruction rate is high, and the problems of low detecting rate and large object volume are solved.
Owner:BEIHANG UNIV

LTCC (Low Temperature Co-Fired Ceramic) miniaturization microwave passive device

The invention discloses an LTCC (Low Temperature Co-Fired Ceramic) miniaturization microwave passive device. The LTCC miniaturization microwave passive device comprises dielectric layers and metal layers which are arranged between the dielectric layers; the dielectric layers comprise a first micro-strip dielectric layer, a second micro-strip dielectric layer, a third micro-strip dielectric layer, a first strip line dielectric layer, a second strip line dielectric layer, a third strip line dielectric layer, a fourth strip line dielectric layer, a fifth strip line dielectric layer and a sixth strip line dielectric layer which are arranged from top to bottom in turn; the metal layers comprise a micro-strip line, a first grounding plane, a strip line and a second grounding plane; the micro-strip line is arranged on the first micro-strip dielectric layer; the first grounding plane is arranged between the third micro-strip dielectric layer and the first strip line dielectric layer; the strip line is arranged between the third strip line dielectric layer and the fourth strip line dielectric layer; the second grounding plane is arranged below the sixth strip line dielectric layer. According to the LTCC miniaturization microwave passive device, the multilayer wiring scheme is adopted and accordingly the circuit size and weight is reduced under the same working frequency, the problem of transmission line overlapping is effectively solved, parasitic parameters are reduced, the structure is simple, and the performance is good.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Crop-weed identification and positioning method based on three-dimensional flight time method imaging

Provided is a crop-weed identification and positioning method based on three-dimensional flight time method imaging. When plant seedling stalk characteristics are obvious, a three-dimensional flight time camera is adopted to obtain side view three-dimensional images of plant seedlings; and when plant seedling leaf blade characteristics are obvious, the three-dimensional flight time camera is adopted to obtain overlook three-dimensional images of the plant seedlings. Then three-dimensional soil partition pretreatment is respectively performed on the side view three-dimensional images and the overlook three-dimensional images, a Hough conversion algorithm and a tube characteristic measuring algorithm are adopted to extract stalk characteristics for the plant seedlings with the obvious stalk characteristics; for the plant seedlings with the obvious leaves, a three-dimensional image local area increase algorithm or a continuous method for inspecting local surface normal direction changes is adopted to extract leaf blade proceeding characteristics; weeds are identified and positioned on the basis of characteristic extraction, and rapid and automatic weeding operation can be performed by matching with a weeding device; simultaneously plant stalk and seedling center positions undergo three-dimensional reconstruction and positioning, accurate positioning of the crop plant seedlings is performed, crop growth data such as planting distances and seeding numbers of crops are obtained automatically, and dynamic automatic accurate management of crop growth is facilitated.
Owner:汤烈
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