1395results about How to "Guaranteed clarity" patented technology

A system can transmit video and audio data of speaker lecture site and courseware information demonstrated on computer to server and the server carries out synchronous synthesis as well as generates a single stream file for being presented at client end. The server synthesizes the courseware prestored locally with video and audio when demonstrated courseware is preset formula and the server synthesizes cut - off screen video with site video and audio when demonstrated courseware in nonpreset formula so that clarity and definition of demonstrated courseware can be ensured at client end.

The invention relates to a method and a device for shooting stereo images by automatically correcting a parallax error. The method comprises the following steps of: acquiring scenery distance information; calculating parallax error correcting data; automatically adjusting space or an angle of a camera lens; completing automatic focus and shooting; and synthesizing the stereo images. The method and the device make shooting equipment shoot high-quality stereo images in various situations by automatically correcting the parallax error during shooting, and avoid the defects that unreasonable parallax errors exist in the shot stereo images because of over short scenery distance or overlarge lens focus of the conventional stereo image shooting technology so as to generate feelings of dizziness and eye discomfort. The invention particularly provides the following three kinds of schemes for correcting the parallax error: automatically adjusting space, automatically adjusting angle by using single lenses, and automatically adjusting the angle by using double lenses. The device for implementing the scheme can be arranged in stereo shooting mobile phones, stereo cameras and stereo video cameras to shoot the stereo images by automatically correcting the parallax error.

A BIM (Building Information Modeling)-based water conservancy and hydropower project management cloud platform comprises a data acquisition layer, a communication network layer, a data resource layer, an application support layer, and a service application layer. The data acquisition layer includes project information management and spatial information measurement; the communication network layer includes a local area network, a VPN (Virtual Private Network) or a public network; the data resource layer includes a BIM model which is stored in a public cloud, in a private cloud or in a hybrid cloud and includes a BIM integrated database; the application support layer includes a BIM project management platform and a data exchange platform; and the service application layer includes BIM information query, construction process BIM management and BIM information output. The BIM integrated database is connected with different project object data, processes and resources, is a digital expression of construction facilities which contains rich data, is object-oriented and has intelligent and parametric characteristics, and supports dynamic information creating, sharing, updating and managing in the life cycle of a project.

The invention discloses glazed tile with wallpaper or bark-shaped surface and concave and convex effect and a preparation method. According to the invention, a product which is a glazed tile with wallpaper or bark-shaped surface and concave and convex effect is obtained by optimizing the composition of an overglaze frit and an overglaze formula, as well as the composition of a convex fancy glaze printed glaze frit and a convex fancy glaze printed glaze formula, printing the convex fancy glaze printed glaze on a green body coated with underglaze and overglaze through a special rubber roller or screen printing plate, and then enabling patterns of convex fancy glaze to keep original printing appearance after being fired at a high temperature and protrude on the surface of inkjet patterns through inkjet printing and high-temperature firing. Further, by mixing with optimized ceramic rubber roller printing ink, through the special rubber roller with optimized design or the screen printing plate with optimized mesh count, the surface gloss of the obtained glazed tile with wallpaper or bark-shaped surface and concave and convex effect is 15-40, the convex fancy glaze has good performance, the protruding height is greater than or equal to 0.8mm, and the convex fancy glaze does not adsorb pollution, so that the decorative patterns formed by inkjet printing are not damaged, and the disadvantage of single decoration style of an existing glazed tile is overcome.

The invention discloses a mobile agent-based Internet of things middleware development method, which is used for remarkably improving the application capability of Internet of things middleware and reducing the development cost of Internet of things middleware application for diversified quality of service (QoS) needs of the Internet of things and dynamic network states. To realize a mobile agent-based Internet of things application program, the method is required to be characterized in that: the functions of the whole application program are required to be realized by a mobile agent, and the functions of the mobile agent can be dynamically changed on a network, and can be dynamically inserted into or deleted from hardware equipment to change own functions of the hardware equipment so as to achieve the aim of reprogramming of the network; and the agents can cooperate and communicate with one another. In the method, powerful and flexible Internet of things middleware is constructed to maximally shield the low-level details of the network and completely develop the technical advantages in the aspects of multi-type data sensing, short-distance wireless communication, self-networking, multivariate data cooperative processing and the like.

The invention relates to the field of video live broadcast and specifically relates to a video stream push control method and device and a video stream director end. The method comprises the following steps of receiving inner network video streams sent by push ends to a local area network stream push address configured to the director end, wherein the director end and the push ends are located in the same local area network; generating an outer network video stream according to the inner network video streams; and sending the outer network video stream to a director server through a public network, thereby sending the outer network video stream to a live broadcast platform through the director server. Multichannel inner network video streams pushed by the push ends are received by an inner network server built in the director end, the inner network video streams are synthesized into the outer network video stream, and the outer network video stream is pushed to the director server, wherein the push ends and the director end are located in the same local area network. Outer network bandwidths are prevented from being occupied repeatedly, moreover, an occupation rate of uplink bandwidths of an outer network can be reduced, loads of the director server is further reduced, the live broadcast fluency of a video is ensured, and the definition of video images is improved.

The invention discloses a glaze and preparation of an embossment phantom glazed brick. The glaze comprises a ground glaze, a surface glaze and an embossment phantom printing glaze, wherein the ground glaze is prepared from a frit b, zirconium silicate, kaolin, calcined kaolin, potassium feldspar powder, fired talc, aluminum oxide powder, quartz powder, carboxymethyl cellulose, sodium tripolyphosphate and water; the surface glaze is prepared from a frit, the frit b, a frit c, kaolin, carboxymethyl cellulose, sodium tripolyphosphate and water; the embossment phantom printing glaze is prepared from parent glaze powder, zinc oxide, tin oxide, cerium oxide and ceramic adhesive roll-printing oil; the parent glaze powder is prepared from the frit c, kaolin, carboxymethyl cellulose, sodium tripolyphosphate and water. The preparation method comprises the following steps: sequentially applying the ground glaze and the surface glaze on a green brick, then printing the embossment phantom printing glaze, performing inkjet printing, and finally firing to obtain the embossment phantom glazed brick. The product disclosed by the invention has unique decorative effect and visual aesthetic feeling; moreover, each indicator can reach the standard requirements, so that the product has relatively strong universality, and is easily popularized in the industry.

The invention relates to a cleaning agent for an automobile windshield, which consists of the following components in percentage by weight: 1 to 50 percent of monobasic alcohol, 1 to 10 percent of ethylene glycol, 0.005 to 0.1 percent of complexing agent, 0.005 to 0.1 percent of cationic surfactant, 0.005 to 0.1 percent of nonionic surfactant, 0.1 to 3 percent of composite corrosion inhibitor, 0.005 to 0.1 percent of colorant and the balance of water. The cleaning agent has cleaning, anti-freezing, anti-fog, anti-corrosion, anti-static, lubricating properties, can effectively remove dust, dirt, spray mark, gum, lac and the like on the windshield, and has high stability of high and low temperature and no damage to the automobile windshield.

The invention discloses a method and device for performing adaptive denoising on a video image. The device comprises a video image reading module, an edge detection module, a filtering mode selection module and a filtering module; the method comprises the following steps of: reading in a frame of video image from a buffer zone, respectively calculating motion vectors between each pixel in the frame of image and the pixel at the same location in a neighboring frame, and respectively executing the edge detection on each pixel in the frame of image; respectively selecting the filtering mode having corresponding intensity for each pixel according to the edge detection result and the calculation result of the motion vector and of each pixel, and then, correspondingly filtering each pixel by a Gaussian similarity filter. The method and the device have obvious denoising effect on various noises of different scene sequences, and can effectively remove noises by combination of a time domain and a space domain.

The invention discloses a method for aerially photographing a crop canopy picture for crop nitrogen analysis and soil fertilization guidance by using an unmanned aerial vehicle. The crop canopy picture is aerially photographed through the unmanned aerial vehicle, meanwhile, aerial latitude and longitude corresponding to the crop canopy picture are obtained, and crop nitrogen analysis and soil fertilization guidance are carried out by combining picture information and latitude and longitude information. According to the obtained method, large-area farmland information can be quickly obtained, influence and limitation of crop growth and farmland environments are avoided, a crop nitrogen state is diagnosed by using color parameters of the picture and the nitrogen fertilizer topdressing index is recommended, the method is accurate and reliable, accurate management of a nitrogen fertilizer is facilitated and better economical and ecological benefits are achieved. The method is fast and simple in operation, stable and reliable in structure, low in operation cost and beneficial to farmland application and popularization; and fine farming of the farmland can be significantly promoted. The aerial photograph equipment of the unmanned aerial vehicle is simple in structure and beneficial to efficient and stable aerial photographing of the crop canopy picture.

The invention discloses an imaging method and an imaging system of dynamic optical fields of multichannel space-time coding apertures, which comprise the steps of establishing a five-dimensional dynamic optical field module of space-time coding, introducing exposure time regarded as a time dimension into coding apertures based on a four-dimensional optical filed, and achieving space-time joint coding of a aperture mode and orthogonal space-time coding apertures based on multiplexing; estimating motion fields, eliminating motion blur, and achieving recovery of motion blur images based on exposure time coding; reestablishing multichannel depth super resolution; and achieving decoupling of motion fields and depth fields and recovering full focus images. Through multiplexing, signal to noise ratio of images and influence of shutter noise are reduced, and optical filed imaging quality is improved. Frequency response characteristics of the exposure time decoding and recovery of the motion blur images can improve definition of images after being recovered, and reestablishment of the depth super resolution improves depth resolution and modifies estimation errors of depth images with low resolution.

An anti-fogging insulating windshield with high infrared reflectivity (more than 70%) features that a semiconductor oxide film, which may be the indium oxide film doped by tin oxide or the zinc oxide film doped by at least one of aluminium oxide, silicon oxide, boron oxide, dysprosium oxide and gallium oxide, is arranged between PVB film and the internal or external surface of glass. Its preparing processis also disclosed.

The invention relates to a monitoring camera with the self-cleaning function based on the Internet of Things. The monitoring camera comprises a support and a camera body arranged on the support; a first groove is formed in the bottom of the support; a folding mechanism is arranged in the first groove; an adjusting mechanism is arranged on the folding mechanism; a second groove is formed in the side wall of the first groove; and a cleaning mechanism is arranged in the second groove. According to the monitoring camera with the self-cleaning function based on the Internet of Things, when monitoring is not needed, the folding mechanism can put the camera body into the support so that the effects of energy conservation and protection can be achieved, and contamination caused by dust can be prevented; and when a lens of the camera body is contaminated, the camera body can be conveyed into the second groove with the cooperation of the folding mechanism and the adjusting mechanism, and the cleaning mechanism located in the second groove can wipe the lens of the camera body. Compared with an existing fixedly-installed monitoring camera, the camera has the advantages that energy can be saved, the camera body can be kept clean, and the shooting sharpness can be guaranteed.

The present invention discloses a rapid detection system of a railway tunnel lining surface disease. The system comprises: an image rapid collection unit S1 configured to collect lining section imagesP1-Pn; a section scanning unit S2 configured to convert an overall dimension to first space coordinates (x, y) corresponding to a plurality of pixel points in the lining section images P1-Pn; a mileage and synchronization unit S3 configured to send synchronization triggering signals to the image rapid collection unit S1 and the section scanning unit S2 to allow the two to perform sampling based on a travel distance and obtain mileage data z; a compensation unit S4 configured to obtain a relative displacement d and a deflection angle [Alpha] of a vehicle body relative to an initial state in aprocess of detection of vehicle travel; and an image processing unit S5 configured to form a three-dimensional tunnel lining surface image having geometrical characteristics and spatial positions of diseases. The detection system provided by the invention is convenient to install and high in resolution, can perform correction of a measurement value and can observably improve the tunnel lining surface disease detection efficiency.

The invention discloses a monitoring camera capable of achieving self-cleaning. The monitoring camera comprises a shell, wherein a piston cylinder ix fixedly connected with the upper left corner of the inner cavity of the shell, a piston is connected with the interior of the piston cylinder in a sliding manner, the top end of the piston communicates with a push tube, the top end of the push tube sequentially penetrates through the piston cylinder and the top of the shell and extends to the upper side of the shell, the top end of the push tube communicates with a cleaning cylinder, a connectiontube communicates with the bottom of the inner cavity of the cleaning cylinder, and a pressure valve is fixedly connected with the surface of the connection tube. The invention relates to the technical field of monitoring equipment. The monitoring camera capable of achieving self-cleaning, the air blown in by an air pump in the early stage can be sealed in the piston cylinder and the push tube without being exhausted by using a pressure valve, so that the air can push the piston upwards, and thus a cleaning brush moves to the left side of the camera; the cleaning brush can rotate under the drive of an impeller which moves via the blowing of wind, so that the cleaning brush can clear the surface of the camera, and thus the surface of the camera is clean, and the shooting definition of thecamera can be ensured.

The invention provides an image processing method, a mobile terminal and a computer readable storage medium. The image processing method comprises the steps of detecting whether a preview image collected by a camera is a preset shooting scene; if so, controlling the camera to collect a first group of images in a first exposure mode and a second group of images in a second exposure mode, respectively; and performing image combination on the M frames of images in the first group of the images and N frames of images in the second group of images to generate a target image, wherein the exposure time of the first exposure mode is greater than that of the second exposure mode, M is less than or equal to the total number of the first images of the first group of the images, N is less than or equal to the total number of the second images of the second group of the images, and M and N are integers greater than or equal to 2. Therefore, the mobile terminal, even in a scene which is not good forshooting, can obtain an image with a relatively good imaging effect.

The embodiment of the invention discloses a video coding method and device, equipment and a storage medium, and the method comprises the steps: enabling a server to obtain a to-be-coded target video frame sequence when video coding needs to be carried out, and determining a region of interest in the target video frame image for each target video frame image in the target video frame sequence; andadjusting the initial quantization parameter values of the image block of the region of interest and the image block of the non-region of interest in the target video frame image to obtain a target quantization parameter value, so that the target quantization parameter value of the image block belonging to the region of interest is smaller than the target quantization parameter value of the imageblock belonging to the non-region of interest. Thus, in the process of encoding the target video frame sequence according to the target quantization parameter value to obtain the video stream, more code rates are allocated to the region of interest, the definition is ensured, less code rates are allocated to the non-region of interest, and the flow generated by video encoding is reduced, so that the network transmission bandwidth occupied by the video stream is reduced, and the transmission efficiency is improved.

The invention provides an automatic drawing device and a method, which relates to the technical field of robot drawing. The automatic drawing device and the method of the invention transform unknown environmental information into a two-dimensional dynamic raster map recognizable by a robot. When the robot moves, the raster map follows suit and updates as well, which avoids the multiple times of adjustments seen by manual drawing and the tedious work required to follow the movement of the robot, therefore, reducing the time for the robot to draw greatly. In addition, through the establishment of a quadtree model, moving targets can be clearly defined; with one time path planning on a local part of the raster map, a whole process can be done automatically, achieving high computational efficiency and simple programming. And at the same time, the robot can acquire sufficient cloud data to ensure the clarity of the map.

The invention discloses a high-performance infrared-visible fusion detection method, which comprises the steps of: image preprocessing, which is implemented by carrying out histogram equalization on an infrared image, widening a grayscale level with a large number of pixels in the image, and reducing a grayscale level with a small number of pixels to obtain a clear image; image registration, whichis implemented by detecting edges of the infrared image and a visible light image by means of a Canny operator, then constructing an image scale pyramid to extract a Fast feature point, and performing image registration; image fusion, which is implemented by performing image fusion of infrared and visible light on the images by adopting a fusion algorithm to obtain a grayscale fusion image; and color mapping, which is implemented by adding components of a visible light color image to the grayscale fusion image to obtain a color fusion image. The high-performance infrared-visible fusion detection method can ensure the precision of image fusion while removing noise, maintains the advantages of the infrared image and the visible light image, and ensures image definition.

The invention discloses mobile monitoring equipment convenient for disassembling and relates to the technical field of video monitoring equipment, wherein the mobile monitoring equipment comprises a movable base and a mounting shell, wherein the movable base is provided with a movable wheel set at the bottom, and the mounting shell is vertically arranged on the movable base; a lifting mechanism isarranged in the mounting shell; a lifting motor for driving the lifting mechanism to lift up and down is arranged on the movable base; a mounting plate extending to the outside of the mounting shellis connected to the lifting mechanism; a rotating driving mechanism is arranged on the installing plate; the rotating driving mechanism is connected with a monitoring assembly; the monitoring assemblycomprises a transparent outer shell in connection with the rotating driving mechanism and a monitoring camera which is arranged in the transparent outer shell and is far away from one side of the mounting shell; and the transparent outer shell is connected with a storage type cleaning mechanism which is used for scrubbing the transparent outer shell close to one side of the monitoring camera. Themobile monitoring equipment has the advantages of being simple in structure, clear in shooting effect and convenient to install and maintain.

The invention aims to provide a Tetrolet transform-based multichannel satellite cloud picture fusing method, which comprises the following steps of respectively performing image histogram equalization processing on multichannel cloud pictures to be fused, and respectively performing Tetrolet transform to obtain a low frequency coefficient, a high frequency coefficient and mosaic coverage values corresponding to the low frequency coefficient and the high frequency coefficient; in a low frequency part of a Tetrolet domain, decomposing again by using a Laplacian pyramid, taking a mean value for a top layer, and reconstructing after taking large parts of grey absolute values of other layers; in a high frequency part of the Tetrolet domain, taking a larger part of high frequency coefficient standard deviation in each image mosaic, and taking corresponding values as the mosaic coverage values; obtaining a final fused image through Tetrolet inverse transformation. Experimental results show that the method can be well used for fusing multichannel cloud pictures, the fused image is good in visual effect and can clearly retain typhoon eye and cloud system detail information, a typhoon center is positioned at high accuracy by using a fused result, and the method is suitable for typhoons with eyes and non-eye typhoons.

The invention discloses a grid noise elimination method and a device for maintaining the image definition. The method includes: when the noise elimination is implemented on each G pixel point in the area needing the noise elimination, whether the unit area is a smooth area or not is judged firstly according to all the values of non-similar pixel points in a unit area which centers on the G pixel point. If yes, the value of the G pixel point and the values of all or part of the non-similar pixel points in the unit area are weighted in average, and the result is used as the value of the G pixel point after being renewed. The device includes a judging unit, a processing unit for smooth area and a processing unit for non-smooth area. By adopting the method and the device of the invention adopted, grid noises can be eliminated, meanwhile, the image definition is maintained, more particularly, the image definition of a marginal part is maintained.

The embodiment of the invention provides quantum dot ink and a preparation method thereof and relates to the technical field of quantum dots, wherein the preparation method of the quantum dot ink comprises: carrying out ligand exchange on a quantum dot stock solution and a ligand in the argon shield and under the condition of 50-70 DEG C; transferring the solution obtained by ligand exchange into a centrifugal bottle, adding a precipitation promoting additive and a quantum dot dispersion promoting additive, and carrying out centrifugal purification to obtain a quantum dot precipitate, carrying out vacuum drying on the quantum dot precipitate to obtain quantum dot powder; and mixing the vacuum dried quantum dot powder with a non-polar solvent according to a certain mass ratio to obtain the quantum dot ink. According to the quantum dot ink and the preparation method thereof provided by the invention, the prepared quantum dot ink can be used for an ink-jet printing method, and most of quantum dots are about to be remained after a volatile solvent in the ink is volatilized, so that the requirement for the quantity of current carriers in the quantum dots when a photoelectric device is conducted as well as the brightness and the definition when pictures and characters are imaged are guaranteed.

The invention discloses a super-resolution processing method for videos. The super-resolution processing method comprises the following steps: carrying out the following processing operations on all frame images in received videos to be processed, namely (1) dividing the current frame image into a plurality of image blocks; (2) respectively carrying out the following processing on all image blocks in the current frame image, so as to obtain super-resolution image blocks of all the image blocks, namely 1) detecting similar blocks of the current block; 2) carrying out up-sampling processing on a plurality of similar blocks of the current image block, so as to obtain up-sampling image blocks of all the similar blocks; and 3) fusing the up-sampling image blocks of all the similar blocks into a super-resolution image block; and (3) integrating the super-resolution image blocks of all the image blocks into an image according to the positions of all the image blocks in the current frame image so as to obtain a super-resolution processing image of the current frame image. The super-resolution processing method disclosed by the invention has the advantages that by utilization of similar image blocks in a space domain and / or similar image blocks in a time domain, the processing effect can be improved.

The invention relates to a voice synthesis system based on a mixing hidden Markov model, wherein a frequency spectrum information generating module receives any text information, selects the codebook vector which represents frequency spectrum information and outputs the frequency spectrum information, a base frequency information generating module receives the text information, takes charge of predicting the pitch change of a to-be synthetic sentence and outputs a base frequency curve, a parameter voice synthesizer module receives the frequency spectrum information of the frequency spectrum information generating module and the base frequency information of the base frequency information generating module, outputs the synthesized voice results, an off-line training module takes charge of training various hidden Markov models, a discrete hidden Markov model obtains the output probability of the real frequency spectrum vector, guarantees the accuracy of the frequency spectrum information, and the frequency spectrum guaranteed by the codebook choosing arithmetic can not generate the oversmoothing phenomenon of time-domain. Using the system to improve the articulation of the output voice of the parameter voice synthesis system, the fidelity of the output voice is greatly improved, which is almost close to the voice quality based on a splicing voice synthesis system.

The invention relates to an image processing method, device and terminal, and the method comprises the steps: carrying out the scale change of a first image and a second image, and obtaining space representation sequences at the two scales, wherein the first and second images have overlapping parts; respectively extracting feature points based on pixels in the two space representation sequences, and obtaining feature points of all scales corresponding to the first and second images; carrying out the clustering of the feature points of all scales into different clusters based on the similarity of feature points of the same scale; respectively determining matching points based on the feature points in the clusters in the first and second images; and carrying out jointing and fusion of the two images based on the matching points. According to the embodiment of the invention, the method achieves the effective detection of cracks and grooves on a highway pavement, is high in accuracy, is good in instantaneity, and facilitates the formulation of a repair strategy for a broken pavement.

The invention discloses a male and female graine laser separator and a separation method thereof. The separator comprises an elevated working platform, an egg raising paper positioning system, a graine color image processing system, a laser generation and light deflection scanning and egg launching system, and a computer. The separation method comprises the following steps: starting the separator, resetting the shifted working platform, placing egg raising paper on a negative-pressure adsorption platform, and starting an air pump to absorb the egg raising paper to be flat; starting a color image acquisition program, and controlling a color image sensor to shoot an egg raising paper image and transmit the egg raising paper image to the computer which processes data, gives out a work instruction for launching time-sequence laser pulse to a laser generator and an electric control device, and gives out a work instruction for light deflection scanning to a galvanometric scanning and electric control device, and generating laser beams to shoot female graine; and placing novel egg raising paper after the task is completed, and repeating the steps. The separator can automatically and accurately separate male and female graines with different graine colors at a high speed so as to save labor and improves the separation precision.

The invention relates to an ink-jet penetrated polished semitransparent ceramic sheet. The ink-jet penetrated polished semitransparent ceramic sheet comprises a semitransparent green body containing an ink dyeing assistant agent, and an ink jet penetrating layer penetrating into the semitransparent green body. According to a preparation method, the ink dyeing assistant agent is added into the semitransparent green body, and ink jet penetrating technology is adopted, so that penetration of patterns into the semitransparent green body is realized, polishing is carried out directly after sintering, green body surface particle flatness is excellent, stain resistance is excellent, pattern wear resistance is excellent, and requirements on highlight products are satisfied, adding of a transparent glaze layer onto the surface of the green body is not necessary, cost is reduced, a problem that bonding of the glaze layer with the green body is poor is solved, production deformation cracking is avoided, the preparation method of the green body is simple, adding of non-transparent preform body is unnecessary, and in addition, the semitransparent green body contains the ink dyeing assistant agent, so that the color of the patterns used for decoration is bright, sharpness is high, and decoration requirements can be satisfied preferably.

The invention discloses an on-line dynamic real-time monitoring method and an apparatus for magnetic suspension concentration, the designed on-line real-time monitoring apparatus for the magnetic suspension concentration comprises a tubular type electromagnetic sensor, a sensor cable, two adapter rings, an electromagnetic detector and two standard magnetic suspension concentration calibration test tubes; the tubular type electromagnetic sensor comprises an external electromagnetic detection coil, a nonmetal circular pipe and a metal shield pipe; the method is characterized in that a pulse transient alternate electromagnetic field is used for motivating the magnetic powder in a constant capacity (100ml) magnetic suspension, a secondary reflection magnetic field generated by the magnetic powder is received, the electromagnetic detector memories the characteristic signals, when the concentration value of the magnetic suspension to be detected exceeds an allowed scope, the electromagnetic detector enables real time alarm, thereby the magnetic suspension concentration changes which are caused by various reasons of nonuniform stirring, impurity containing and repeated usage and the like can be timely found, the detection leakage, misjudgment and repeated detection work are avoided, and the detection quality of the magnetic powder can be effectively enhanced.

The invention provides a digital household network multimedia sharing system and a sharing method thereof. The system comprises an intelligent household gateway and a terminal device, wherein the terminal device carries out video coding on a video by using a scalable video coding method to generate a video code stream block with time, space and quality-scalable characteristics and also generate avideo trajectory file; and the terminal device can also set transmission priority of the generated video code stream blocks, and adjust the transmission code rate of the multimedia information streams in a self-adapting mode according to the network conditions. In the sharing method, when the network available bandwidth is reduced, a user can watch smooth video at the client, and the video smoothness can be kept although the video resolution can decrease; and when the network available bandwidth is increased, the client can gradually enhance the video resolution on the premise of keeping the video smoothness. The system is suitable for bandwidth-limited digital household networks, and also suitable for intercommunication among different terminals in isomerous networks.