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1466 results about "Block effect" patented technology

Real-time video coding/decoding

A video codec for real-time encoding / decoding of digitized video data with high compression efficiency, comprising a frame encoder receiving input frame pixels; a codec setting unit for setting and storing coding setting parameters; a CPU load controller for controlling desired frame encoding time and CPU loading; a rate controller for controlling frame size; a coding statistics memory for storing frequency tables for arithmetic coding of bitstream parameters and a reference frame buffer for storing reference frames. The frame encoder comprises a motion estimation unit, a frame head coding unit, a coded frame reconstruction and storage unit and a macroblock encoding unit. The macroblock encoding unit provides calculation of texture prediction and prediction error, transforming texture prediction error and quantization of transform coefficient, calculation of motion vector prediction and prediction error and arithmetic context modeling for motion vectors, header parameters and transform coefficients. The codec also includes a deblocking unit for processing video data to eliminate blocking effect from restored data encoded at high distortion level, which may be a part of encoder or decoder, an internal resize unit, providing matching downscaling of a frame before encoding and upscaling of decoded frame according to the coding setting parameters, and a noise suppression unit.
Owner:BEAMR IMAGING LTD

Real-time video coding/decoding

A video codec for real-time encoding / decoding of digitized video data with high compression efficiency, comprising a frame encoder receiving input frame pixels; a codec setting unit for setting and storing coding setting parameters; a CPU load controller for controlling desired frame encoding time and CPU loading; a rate controller for controlling frame size; a coding statistics memory for storing frequency tables for arithmetic coding of bitstream parameters and a reference frame buffer for storing reference frames. The frame encoder comprises a motion estimation unit, a frame head coding unit, a coded frame reconstruction and storage unit and a macroblock encoding unit. The macroblock encoding unit provides calculation of texture prediction and prediction error, transforming texture prediction error and quantization of transform coefficient, calculation of motion vector prediction and prediction error and arithmetic context modeling for motion vectors, header parameters and transform coefficients. The codec also includes a deblocking unit for processing video data to eliminate blocking effect from restored data encoded at high distortion level, which may be a part of encoder or decoder, an internal resize unit, providing matching downscaling of a frame before encoding and upscaling of decoded frame according to the coding setting parameters, and a noise suppression unit.
Owner:BEAMR IMAGING LTD

Preparation method of core-shell structure superfine fiber carrier material for medical dressing

The invention provides a preparation method of a core-shell structure superfine fiber carrier material for medical dressing. The preparation method is basically characterized by specifically comprising the following steps: mixing and dissolving macromolecular polymers into a solvent to obtain a shell layer solution; selecting at least one of a functional high polymer and a medicine and dissolving the functional high polymer or the medicine into a solvent under the aseptic condition to obtain a core layer solution; and performing coaxial electrostatic spinning, placing into a vacuum drying box, and vacuum-drying to remove the residual solvent to obtain the core-shell structure superfine fiber carrier material for the medical dressing. The core-shell structure superfine fiber carrier material for the medical dressing has excellent water-absorbing property, moisturizing property and air permeability, can provide a wet microenvironment for wound healing, is uniform in pore size distribution, and achieves a bacterium blocking effect. The core layer high polymer or medicine can achieve zero-order release through corrosion or diffusion mechanism, so the influence of the environment on the medicine effect is reduced and unnecessary damage to a human body by the medicine is reduced.
Owner:上海必趣医疗科技有限公司

Gray scale image fitting enhancement method based on local histogram equalization

InactiveCN105654438ASuppresses "cold reflection" imagesEvenly distributedImage enhancementImage analysisImage contrastBlock effect
The invention provides a gray scale image fitting enhancement method based on local histogram equalization. The gray scale image fitting enhancement method has advantages of improving gray scale image contrast and detail information and eliminating block effect and over-enhancement. The gray scale image fitting enhancement method comprises the steps of performing segmental linear transformation on a gray scale image in an overwide dynamic range, obtaining the gray scale image in an appropriate dynamic range, dividing an image gray scale distribution interval to two segments to multiple segments, adjusting the gradient of a segmenting point and a transformation line of each image gray scale distribution interval, performing expansion or compression on a random gray scale interval; performing subblock part overlapping histogram equalization on a transformation result, obtaining the transformation function of the current subblock through performing weighted summation on a subblock transform function in the neighborhood, performing histogram equalization processing on the current subblock by means of the transformation function; and performing nonlinear fitting on the gray scale map after histogram equalization, and performing histogram distribution correction on the gray scale image after subblock part overlapping histogram equalization.
Owner:SOUTH WEST INST OF TECHN PHYSICS

Modified diaphragm and preparation method and application therefor

The invention discloses a modified diaphragm. The modified diaphragm comprises a diaphragm substrate, and an electronic conductive coating layer and an inorganic hard coating layer positioned on the two surfaces of the diaphragm substrate respectively, wherein the electronic conductive coating layer is a mixed coating layer with graphene and a porous carbon material; and the inorganic hard coating layer is a nitrogen-carbon material coating layer, a nitrogen-silicon material coating layer, a carbon-boron material coating layer or a silicon-carbon material coating layer. The preparation method comprises the steps of uniformly coating the two surfaces of the diaphragm substrate with the electronic conductive coating layer and the inorganic hard coating layer respectively, and drying the two surfaces respectively obtain the modified diaphragm. The modified diaphragm has high diffusion and absorption capacity for an organic electrolyte, high ionic conductivity, and an obvious adsorption and blocking effect on poly-sulfur-lithium; in addition, the modified diaphragm can further restrain a shuttle effect, prevent battery short-circuit, effectively restrain the growth of negative electrode metal lithium dendrites in a cyclic process, prevent from punching the diaphragm, and protect the lithium negative electrode, so that the problem that the diaphragm is punched after dendrites formation is solved, and the safety performance of the battery is improved.
Owner:CENT SOUTH UNIV

Anti-seepage and leak-blocking construction method for excavation of subway foundation pit in soft soil area

The invention discloses an anti-seepage and leak-blocking construction method for excavation of a subway foundation pit in a soft soil area, which comprises the following steps: 1) joint pre-reinforcement construction of an underground continuous wall: constructing a pre-reinforcement structure of a high-pressure rotary jet grouting pile, guiding holes, grouting by a sleeve valve pipe, sealing the holes, guiding the holes again and pre-burying the sleeve valve pipe for standby; and 2) the excavation of the foundation pit and the anti-seepage and leak-blocking construction: using surface floating earth for clearing and using the encased steel plate reinforcement method for anti-leak treatment for the situations that joints of the underground continuous wall have defects definitely and risk points are positioned below the excavation surface of the foundation pit, adopting the hole-guiding cyanogen injection condensing method for blocking of leak points with slight water leakage situation, adopting the horizontal hole grouting method for blocking for the water leak points with serious water leakage situation, and carrying out filling, grouting and reinforcement through the pre-buried sleeve valve pipe after completing the blocking. The method has reasonable design, convenient construction, comprehensive consideration, good anti-leak and leak-blocking effect, fast leak-blocking speed and can solve the problems of pipe blocking, poor anti-leak and leak-blocking effect, slow construction progress and the like in the existing anti-leak and leak-blocking construction.
Owner:TIANJIN CONSTR ENG CO LTD OF CHINA RAILWAY FIRST GRP CO LTD +1

Functional dressing, and preparation method and application thereof

ActiveCN103520764AThe solution is not easy to fixSolve the problem of not being able to form a filmAbsorbent padsBandagesTherapeutic effectDiabetic foot
The invention relates to an active wound repair material, specifically to a functional dressing and a preparation method and application thereof, belonging to the field of medical materials. To overcome a technical problem, the invention provides the functional dressing, which belongs to biologically active wound repair materials. The functional dressing is prepared from the following raw materials by weight: 2 to 6 parts of biologically active glass, 12 to 20 parts of alginate, 4 to 12 parts of chitosan and 100 to 200 parts of water. Multiple dosage forms can be prepared from the above-mentioned raw materials, mainly comprising a gel, a dressing, etc. The functional dressing provided by the invention has the advantages of bacteriostatic action on a wound, promotion of wound healing and growth, adsorption of a small amount of tissue exudates, good biosecurity, waterproof performance, a bacterium blocking effect, etc. The functional dressing has a wide application scope, is applicable to mechanical trauma and operative incision (wound) and exerts a good therapeutic effect on hard-healing wounds like burns and scalds, diabetic foot, ulcer and pressure sores and a good curative effect on an infectious wound and a delayed union wound.
Owner:成都迪康中科生物医学材料有限公司

Strong-inhibition drilling fluid system

The invention relates to a strong-inhibition drilling fluid system, comprising the following components by mass percent of 2.5-4.5% of bentonite slurry, 0.1-0.3% of alkaline regulator, 0.3-2.0% of shale inhibitor, 0.2-0.4% of metal ion polymer, 2.0-5.0% of walchowite, 2.0-5.0% of sulfomethal phenolaldehy resin, 1.0-3.0% of cation emulsified asphalt, 0.5-3.0% of lubricating agent, 0.2-0.8% of emulsifier, 2.0-8.0% of crude oil, and 1.0-3.0% of calcium carbonate superfine powder according to 100% of water. The compound in a general formula (I) is also provided; R1 is H or CH3; R2 is H, CH3 or C2H5; and X is an integer between 2 and 20 and applied to the shale inhibitor. The compound and the cation emulsified asphalt are applied to the drilling liquid system; the drilling liquid system is strong in shale inhibition; the shale recovery rate can be up to 90.33% and is improved by over 35.02% in comparison with that of water shale; the high temperature resistance can be up to 150 DEG C; the lubricating friction coefficients before and after aging respectively are smaller than 0.1; the strong-inhibition drilling fluid system is strong in capacity of resisting poor soil, salt and calcium contamination, strong in rejection capability, and good in blocking effect; the API (American petroleum institute) water loss of the drilling fluid is smaller than 4.5mL, and the HTHP (high temperature and high pressure) water loss is smaller than 12mL.
Owner:CHINA PETROLEUM & CHEM CORP

Fusion channel based and sky immune image defogging method

InactiveCN106846263AAccurate Adaptive EstimationImprove universalityImage enhancementPattern recognitionSky
The present invention discloses a fusion channel based and sky immune image defogging method, relates to the technical field of digital image processing, and solves problems that in the existing image defogging method, after defogging, the defogging effect is poor due to color distortion in the sky area, and occurrence of the phenomenon of halo and the block effect, and the existing method has a cumbersome recognition process, a large amount of calculation, and so on. The method disclosed by the present invention comprises: carrying out minimum and maximum values filtering on a fog image, roughly estimating atmospheric light, introducing correction factors, and carrying out rough estimate on the transmittance of the dark channel and the transmittance of the bright channel respectively; using the guided filter to carry out precise optimization respectively, determining whether the transmittance of the dark channel is greater than the transmittance of the bright channel (wherein, if so, the dark primary channel image is the sky area, and if not, the dark primary channel image is not the sky area), and obtaining precise estimate of the fusion transmittance; and taking the pixel mean value as the adaptive accurate estimate and the fusion transmittance of the atmospheric light, and obtaining a clear defogging image by using the atmospheric scattering imaging model.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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