97results about How to "Increase compositing speed" patented technology

The invention discloses a self-adaptation camouflage design method based on a background. According to the method, on the basis of a texture synthesis algorithm based on pixels, a whole camouflage image is synthesized pixel by pixel; in the synthesis process, a self coding algorithm is adopted to extract a texture primitive containing background sample complete texture features, and a neighborhood of the pixels to be synthesized is determined; by means of the neighboring correlation principle and a helix supplement search mechanism, a neighborhood matched with a target pixel neighborhood is searched for in a background sample; similarity matching is carried out through a pixel and texture similarity matching rule, pixels in the neighborhoods which are most similar in the sample are selected to serve as synthesis pixels, pixels of a target image are synthesized according to the sequence of scanning lines, and after synthesis, color quantization is carried out on the image by means of the clustering algorithm to generate a final camouflage image. By means of the method, similar camouflage images can be synthesized quickly according to the background, and the application aim of quickly camouflaging a target in a self-adaptation mode can be achieved.

The invention relates to a speech synthesis method, a vocoder training method and device, a medium and electronic equipment. The method comprises the steps of obtaining acoustic feature information ofeach speech frame corresponding to each phoneme in a to-be-synthesized text; and inputting the acoustic feature information of each speech frame into a vocoder to obtain audio information corresponding to the to-be-synthesized text, the vocoder being a vocoder based on an extended convolutional neural network. Since the extended convolutional neural network has the capability of processing data in parallel, the speed of speech synthesis can be improved and the training speed of the vocoder can be accelerated by performing speech synthesis through the vocoder based on the extended convolutional neural network. Moreover, the vocoder performs speech synthesis based on the acoustic feature information of each speech frame, and the acoustic feature information of each speech frame does not need to be extracted, so that the operand of the vocoder is reduced, and the speed of speech synthesis is further improved.

The embodiment of the invention provides an acquisition device and method in 3D modeling. The method comprises the following steps that (1) a plurality of images of a target object are acquired by using the acquisition device; (2) the calibration device acquires the position and attitude information of the acquisition device when the acquisition device acquires each image; (3) the processor synthesizes a three-dimensional model of the target object according to the plurality of images, and obtains three-dimensional coordinates corresponding to the homonymous image points according to the position and attitude information of the acquisition equipment, so as to obtain three-dimensional model point cloud with accurate three-dimensional coordinates; and the calibration device obtains positionand attitude information according to comparison of the acquired star map and the navigation star map. The absolute size calibration of the target object is realized through a method for acquiring theposition and the posture of the camera, and a homonymous image point resolving mode is adopted, so that the target object does not need to be subjected to calibration object placement or calibrationpoint projection in advance.

A process for synthesizing ammonia includes such steps as heating the RE metal (or alloy) powder or block to the temp higher than the hydrogenation temp in the atmosphere preventing oxidizing and nitriding, introducing hydrogen gas to make the RE metal (or alloy) absorb hydrogen, introducing the mixture of oxygen and nitrogen gases or air, and chemical reaction. Its advantages are simple process and saving energy.

The invention discloses a virtual viewpoint synthesis method based on GPU acceleration, and a high-quality virtual viewpoint image is synthesized in an accelerating manner by utilizing a depth image based rendering (DIBR) technology and a GPU multithreading parallel characteristic. The method comprises the following steps: firstly, performing smoothing processing on depth images of a left reference viewpoint and a right reference viewpoint; secondly, restoring two-dimensional plane coordinates of various pixel points in the depth images, after the smoothing processing, of the left reference viewpoint and the right reference viewpoint to a three-dimensional space through 3D mapping; then projecting coordinates in the three-dimensional space to a virtual viewpoint imaging plane by using graphics API rendering so as to obtain a synthetic virtual viewpoint image; and, finally, performing hole filling of the synthetic virtual viewpoint image. The method can utilize a powerful parallel computing ability of a GPU, accelerate a traditional virtual viewpoint synthesis algorithm, effectively reduce rendering time, and provide a great reference for real-time virtual viewpoint synthesis.

The invention provides a multi-region three-dimensional model generation method and device. The method comprises the following steps: acquiring multiple groups of images A of a first region of a target object by using an image acquisition device; acquiring a plurality of groups of images B of a second region of the target object; acquiring a plurality of groups of images C of a third region of thetarget object by using the image acquisition device; wherein the third region is a region where the first region and the second region of the target object are connected; wherein the multiple groupsof images A, the multiple groups of images B and the multiple groups of images C can be used for synthesizing a target object 3D model. It is proposed for the first time that complete information of atarget object is collected in a transition collection mode, so that real 3D model construction is achieved, and three-dimensional information of the real volume range of the target object is obtainedinstead of only three-dimensional information of the surface of the target object. And more information (such as thickness) of the target object can be measured.

The invention provides a hand intelligent 3D information acquisition and measurement device and method. The acquisition and measurement device comprises an image acquisition device and a bearing plate, and the image acquisition device and the bearing plate are oppositely arranged; the bearing plate is used for bearing hands; the image acquisition device is arranged on the rotating device, and an included angle gamma is formed between the optical axis of the image acquisition device and the rotating plane. A mode of forming an included angle between a camera optical axis and a rotating plane isproposed for the first time to simultaneously improve the synthesis speed and synthesis precision of the hand 3D model. By optimizing the positions of pictures acquired by the camera, it is guaranteed that the 3D synthesis speed and synthesis precision of the hand can be improved at the same time; and when the position is optimized, angle measurement and target size measurement are not needed, sothat the applicability is higher.

The invention discloses recombinant escherichia coli of a temperature-control coexpression exogenous gene, which is named as Escherichia coli DT26 (pBVNsS) CCTCC NO:M 209018. The genotype of the recombinant escherichia coli is delta nagE::FRT; and the recombinant escherichia coli contain a temperature-control coexpression carrier pBVNsS. Simultaneously, the invention also discloses the application of the recombinant escherichia coli used as a catalyst for the complete cell catalytic preparation of N-acetylneuraminic acid. In the process of the large-scale catalytic production of the N-acetylneuraminic acid, the recombinant escherichia coli of the temperature-control coexpression exogenous gene has the characteristics of safe and convenient preparation of the catalyst, simple operation of the catalytic process, cheap price, higher efficiency, easy extraction and the like.

The invention provides close-range target object 3D acquisition equipment. The equipment comprises an acquisition region moving device for driving an acquisition region of an image acquisition deviceto move relative to a target object and the image acquisition device for acquiring a group of images of the target object through the relative movement; the acquisition position of the image acquisition device meets a preset condition. A 3D collection and synthesis method for tiny objects is provided for the first time. With a mode of arranging a background plate to rotate together, the synthesisspeed and the synthesis precision can be improved at the same time.

The invention provides 3D intelligent visual equipment, which comprises a rotating device and an image acquisition device, wherein the rotating device is used for driving an acquisition region of theimage acquisition device to move relative to a target object; the image acquisition device is used for acquiring a group of images of the target object by means of the relative movement; and an optical axis of the image acquisition device and the rotating plane of the rotating device form an included angle gamma. The 3D intelligent visual equipment proposes for the first time that a camera opticalaxis and a rotary disc rotate at a certain included angle rather than in parallel to acquire images of the target object, thus 3D synthesis and modeling are realized without rotating around the target object, and the adaptability of a scene is improved.

The invention provides an image acquisition device for 3D information acquisition and a selection method thereof. The image acquisition device is applied to 3D information acquisition equipment. The 3D information acquisition equipment comprises an acquisition area moving device used for driving an acquisition area of the image acquisition device to move relative to a target object, and the imageacquisition device used for acquiring a group of images of the target object through the relative movement, wherein the image acquisition device satisfies a preset condition. The invention proposes for the first time that the synthesis speed and the synthesis precision are improved simultaneously by selecting an appropriate camera; and when the camera is selected, angle measurement and target sizemeasurement are not needed, so that the applicability is higher.

The embodiment of the invention provides a calibration device and a calibration method in 3D modeling. The method comprises the following steps: (1) projecting a plurality of light beams to a target object through the calibration device, and forming a plurality of light spots, i.e., calibration points, on the surface of the target object; (2) respectively carrying out distance measurement and angle measurement on the calibration points by utilizing a distance measurement module and an angle measurement module in the calibration device; (3) by taking the calibration device as an original point,calculating the coordinate of each calibration point according to the distance measurement value and the angle measurement value; and (4) determining the coordinates of a 3D model of the target object. The absolute size calibration for the target object is realized through the method of carrying out laser distance measurement and angle measurement on a plurality of points.

The invention provides a standardized 3D information acquisition and measurement method and system, and the method comprises the steps: adjusting the position of a target object according to a presetmark, and enabling the preset features of the target object to be aligned with the mark; collecting a plurality of images of the target object at a plurality of positions, wherein the interval betweentwo adjacent positions in the plurality of positions is within a predetermined range; segmenting the plurality of images to obtain a plurality of preprocessed images containing target object predetermined information; and synthesizing the 3D information of the target object by utilizing the plurality of preprocessed images. According to the invention, standardization of acquisition required in the field of 3D acquisition and synthesis, especially in the field of synthesizing 3D by using pictures shot at multiple positions, is proposed for the first time, i.e., a certain specification is required to be specified for acquisition and synthesis, so that the acquisition and synthesis precision is higher, the speed is higher, the acquired data is more orderly, and subsequent processing and utilization are facilitated.

The invention relates to an isothermal PCR nucleic acid amplification method based on dI modified primer and endonucleaseV. The amplified target nucleic acid primer is completely matched with the template; 1 to 5 dI nucleic acids are on the 10 to 30 site at the 5' end; 10 to 30 nucleic acids are at the downstream of the dI nucleic acids. The reaction components of isothermal PCR comprise dI modified forward primer and reverse primer, target nucleic acid template, four kinds of deoxyribonucleoside triphosphates dATP, dTTP, dCTP and dGTP, DNA polymerase, endonucleaseV, single DNA chain binding protein and helicase. After the initial thermal denaturation and annealing hybridization, the mixture of isothermal PCR carries out the PCR reaction. During the amplification process, the circulation and regeneration of the primer-template compound is realized by endonucleaseV, which induces the DNA synthesis reaction; the single DNA chain binding protein and helicase can improve the efficiency of isothermal PCR. The amplification of the target nucleic acid of the invention does not rely on the thermal cycler; the invention has easy and convenient operation, which can be used for a large scale and high yield amplification of the target nucleic acid.

The invention provides acquisition equipment for a tiny target object. The acquisition equipment comprises an image acquisition device, a micro-motion device and an objective table. The micro-motion device comprises a rotary disc and a swing disc, spacers are arranged between the rotary disc and the swing disc, and the spacers rotate along with the rotary disc so as to drive the swing disc to swing near a reference plane. The image acquisition device is arranged on the swing disc. A structure suitable for acquisition around a tiny object is provided for the first time, and the problem of rotating out of view is avoided.

The invention provides a system for reducing air friction resistance on surfaces of a train by blowing air to interfere in air flow. The system comprises a plurality of convex-peak-shaped air blowingunits longitudinally arranged on wall surfaces of a gangway bellows of the train. The air blowing directions of the air blowing units are opposite to the direction in which the train runs, and the airblowing directions of all the air blowing units are the same; each of the air blowing units comprises two air blowing openings which are both positioned on inclined surfaces of the corresponding convex peak shape and which form a certain included angle with the plane of the corresponding outer surface of the train; one of the two air blowing openings is in the reverse direction to the direction in which the train runs so as to achieve air blowing and sealing, and the other air blowing opening is in the same direction as the direction in which the train runs so as to achieve sealing; inside the train, the air blowing units comprise first systems, second systems and supporting and rotating mechanisms; the first systems and the second systems are separately clamped, supported and rotated through the supporting and rotating mechanisms; the first systems comprise air blowing devices and compression devices so as to separately achieve air blowing and compression sealing; and the second systems comprise compression devices so as to achieve compression sealing.

The invention discloses a catalyst used in an alkylation reaction, a preparation method and application of the catalyst. The catalyst comprises 60-90 percent by weight of beta zeolite and 10-40 percent by weight of inorganic oxide carrier. The catalyst is characterized in that the beta zeolite is boric beta zeolite, and the mol ratio of SiO2/B2O3 in the boric beta zeolite is 5-80. According to the preparation method of the catalyst, the boric beta zeolite is firstly synthesized, and then modified to be used for preparing the catalyst for the alkylation reaction. Compared with similar catalysts, the catalyst has higher ethylbenzene selectivity and higher activity stability in the process of synthesizing the ethylbenzene by liquid-phase alkylation of benzene and ethylene.

The invention provides a semantic analysis method based on electric power professional terms, which can quickly and efficiently realize human-computer interaction and ensure data safety. The inventiondiscloses a semantic analysis method based on electric power professional terms. The semantic analysis method comprises text preprocessing, Chinese word segmentation, Chinese annotation, a professional term voice library, machine learning, a semantic model, service process control and server-side intranet private cloud service. The invention discloses a semantic analysis method optimization scheme based on electric power professional terms. The text preprocessing comprises the specific steps that collected local dialects, professional terms and operation instructions are unified and standardized in the aspect of writing form, wrongly written characters and unconventional words are corrected, statement paragraphs are redivided, and an accurate data source is provided for next semantic analysis through the text preprocessing method described above.

The invention relates to a preparation method for a modified B-Beta zeolite-containing hydrocracking catalyst. Modified B-Beta zeolite is first prepared, the modified B-Beta zeolite and macroporous amorphous silica-alumina are uniformly mixed and added with bionder or peptizer, and after shaping, drying and baking, a catalyst carrier is prepared; the impregnation method is adopted to load hydrogenation active components, and after drying and baking, the hydrocracking catalyst is prepared. While taking account of catalyst activity and middle fraction oil selectivity, the hydrocracking catalyst prepared by the method also can be used for producing high-quality, low-freezing point diesel oil.

The invention provides foot intelligent 3D information acquisition and measurement equipment which comprises an image acquisition device and a background plate, and is characterized in that the imageacquisition device and the background plate are oppositely arranged and synchronously rotate; the background plate and the image acquisition device are kept oppositely arranged in the rotating process, so that the background plate becomes a background pattern of an image acquired by the image acquisition device during acquisition; and the image acquisition device and the background plate rotate around feet. The mode that the background plate rotates along with a camera is added for the first time to improve the synthesis speed and the synthesis precision of a foot 3D model at the same time. Byoptimizing the size of the background plate, while the rotating burden is reduced, it is guaranteed that the foot 3D synthesis speed and the foot 3D synthesis precision can be improved at the same time.

The embodiment of the invention provides a size calibration device and methodthree-dimensional model . The three-dimensional model size calibration device comprises a plurality of mark points arrangedon a target object or around the target object; the collection area of the image collection device moves relative to the target object so as to acquire a plurality of images of the target object, andat least one part of the plurality of images comprises mark points; and the processor is used for synthesizing a 3D model of the target object according to at least one part of images in the plurality of images, recognizing the mark points in the at least one part of images, and obtaining the coordinates or sizes of the 3D model of the target object according to the coordinates or sizes of the mark points. The calibration efficiency is improved by optimizing the shape of the calibration mark.