68results about How to "Guaranteed visual quality" patented technology

This invention discloses a 3-D remote visualization method including: 1,the customer end receives an interactive order sent by a user and analyses it, 2, the customer end presents a request for browsing a 3-D model to the server end and the visual position of the user to require to get the accurate views, 3, a primary server analyses the request and judges it to fetch the required model file from the database of the primary server or a server provider or prompt it to the user, 4, the primary server romances the model file to generate an accurate view, 5, the primary server compresses the view color information and depth information, 6, the primary server sends the got compressed file and the visual positions to the customer end, 7, the customer de-compresses the file and positions to store them in a buffer and display the color information.

The invention discloses a preset nut type steel-reinforced concrete compound pier template fixing device and a construction method thereof. The fixing device mainly comprises a template, a nut, a screw rod, a PVC protecting pipe, an inner keel and an outer keel. The nut is welded on a steel column, the template surrounds the periphery of the steel column, the outer keel is arranged around the outer side of the template, the inner keel is arranged between the template and the outer keel, one end of the screw rod is connected with the nut by a thread, the PVC protecting pipe is sleeved on the screw rod, and the other end of the screw rod is fixed on the outer keel by a 3-shaped buckle. The invention has simple structure, low cost, and simple and convenient construction, solves the difficulty of fixing the steel-reinforced concrete compound pier template, is convenient for the field construction operation and lightens the workload and the labor intensity. The inner keel, the outer keel, the template and the screw rod can be repeatedly used so as to save the cost, ensure the construction safety of the template and improve the forming quality of the concrete column; meanwhile, the fixing device adopts common materials, thereby lowering the cost and being convenient for popularization and application.

The invention provides an iterative self-adaptive reversible watermark embedding and extracting method. The embedding method firstly adopts an iterative self-adaptive method to select an adjustment translation amount to achieve a balance of watermark embedding capacity and embedding carrier visual quality according to influence of the load data size and an integer vector on a peak signal to noise ratio; then a complete location map generation strategy is given according to a principle that neighboring pixel values are close so as to improve location map compression performance; and finally a layered orderly embedding strategy is adopted to embed load data in the lowest, the second lowest and the third lowest significance bits to avoid a circumstance that the capacity is sufficient but embedding cannot be realized. Compared with a conventional mean value adjustment integer transformation reversible watermark, the method provided by the invention can still maintain a large embedding capacity without setting a threshold value in advance, after a watermark is embedded, visual quality of a shelter is better, performance of the location map generation strategy is better than the conventional mean value adjustment integer transformation reversible watermark method and a compressed location map is smaller, thereby indirectly increasing the embedding capacity.

The invention discloses a post-cast strip structure for previously stopping water in basements and a construction method thereof. The structure comprises a main basement structure on the left and right sides, a post-cast strip area and a cast-in-place trapezoid concrete groove structure which is arranged below the post-cast strip area. A water-proof material rolling layer, a water-proof polyurethane coating film layer, a water-proof protective layer and a concrete cushion layer are sequentially arranged below the main basement structure and the cast-in-place trapezoid concrete groove structure; the post-cast strip structure for previously stopping the water in the basements has the advantages of being excellent in leaking-proof and water-proof effect, simple in structure, high in contraction distortion capability, and capable of effectively preventing sundries and accumulated water from entering the post-cast strip area, avoiding secondary cleaning, providing convenience for construction and effectively accelerating construction progress, and moreover, the undesirable phenomena such as slurry accumulation, water accumulation and the like are unlikely to occur by using the structure, so that the post-cast strip structure for previously stopping the water in the basements is worthy of popularization.

The invention discloses a construction method of a special structural layer for tapered bottom wheat steeping, comprising the following steps of: erecting a bracket according to the sequence of a special-shaped beam, a cross-shaped beam, a circular beam and a round hole; laying a special-shaped beam bottom form and a cross-shaped beam bottom form on the beam bottom bracket; banding a beam reinforcement cage above the special-shaped beam bottom form; placing the banded beam reinforcement cage on the special-shaped beam bottom form; banding a beam reinforcement cage above the cross-shaped beam bottom form; banding cantilever bracket tendons on the special-shaped beam and the cross-shaped beam, and passing reinforcing steel bars through the circular beam; preparing a triangular hollow cabinet from battens and bamboo veneers and fixing on the beam bottom protruding from the circular beam; laying a planking bottom form on the side from of each beam, and reserving post-casting zones at the corresponding position of the beam affecting on the stretching of the bonded prestressed tendons; pouring concrete; and stretching the special-shaped beam prestressed tendons in this layer. The inventive method has the advantages of no need of rework, convenient scaffold erection, accurate template erection positions, and safe structure.

The invention relates to image processing, the invention relates to the technical field of digital watermarking, and discloses a high-capacity reversible image watermarking algorithm with improved difference expansion. The algorithm comprises the steps of watermark embedding and watermark extraction, watermark embedding of an original image and watermark extraction of an image containing watermarks through cat face scrambling, a generalized difference expansion method, improved gray scale overflow processing and a difference quantification method. Compared with the prior art, the algorithm hasthe advantages that the pixel mean value before and after watermark embedding through a generalized difference expansion method is invariant, so that the smoothness value before and after watermark embedding is invariant, and watermark extraction is facilitated; an improved gray overflow processing method is used, on the premise that certain visual quality is guaranteed, watermark embedding can be conducted multiple times, and the watermark embedding capacity is increased; auxiliary information is embedded through a difference quantization algorithm, so that the method has relatively good imperceptibility and relatively high effective load capacity; and after the watermark is extracted, the original image can be completely recovered, the similarity between the extracted watermark and theoriginal watermark is extremely high, and the error is small.

The invention relates to the field of building formwork joint seam anti-grout-leakage sealing, in particular to a wall column timber formwork joint seam anti-grout-leakage sealing device and method. The wall column timber formwork joint seam anti-grout-leakage sealing device is characterized in that the wall column timber formwork joint seam anti-grout-leakage sealing device comprises channel steel, a batten and a rubber strip; the rubber strip is of a T-shaped section structure, the length of a web of the rubber strip is equal to the thickness of a formwork, the web of the rubber strip is located in a formwork joint seam, and a flange of the rubber strip is located on the outer side of the formwork; and the batten is attached to the flange of the rubber strip, and the channel steel is located on the outer side of the formwork to be used for compressing the batten. According to the wall column timber formwork joint seam anti-grout-leakage sealing device, the structural stability is excellent, grout leakage at the position of the joint seam can be effectively prevented, the concrete appearance quality and the wall column shape are ensured, and the wall column timber formwork joint seam anti-grout-leakage sealing device has the advantages that the structure is simple, and construction is easy and rapid.

A video fault tolerance coding method based on reversible information hiding and a redundancy technology is disclosed. The method comprises two steps: coding terminal information embedding and decoding terminal information extraction. The step of the coding terminal information embedding is characterized in that: redundant slice is adaptively added to odd numbered frame of a video sequence and the RS is not added to even numbered frame; a motion vector of the even numbered frame in a key area is extracted and converted into a bit sequence; a scheme for easily expanding bilateral reversible information hiding is provided, a motion vector distribution function in the RS is calculated and information of the even numbered frame is embedded in the motion vector of the RS in a previous frame. The step of the decoding terminal information extraction is characterized by: extracting the embedded information according to an extraction algorithm of the decoding terminal and a distribution function characteristic of the RS motion vector and converting into the motion vector which can be used by error concealment; according to a network state, if a packet loss phenomenon happens to the odd numbered frame, starting using the RS; if motion vector loss happens to the even numbered frame, using the extracted motion vector information to carry out error concealment. In the invention, the video fault tolerance coding solution scheme with a gradable character, a large capacity and a low bit rate expansion is provided.

The invention provides a brickwork corner constructional column formwork shaping and reinforcing device. The brickwork corner constructional column formwork shaping and reinforcing device comprises an external corner reinforcing part, an internal corner reinforcing part and a connecting part, wherein the connecting part is connected with the external corner reinforcing part and the internal corner reinforcing part; the external corner reinforcing part and the internal corner reinforcing part are arranged in parallel; the external corner reinforcing part comprises an external corner positioning part and an external corner supporting part; the two ends of the external corner supporting part are connected with the external corner positioning part; the external corner supporting part supports the external corner positioning part; the internal corner reinforcing part comprises an internal corner positioning part and an internal corner supporting part; the two ends of the internal corner supporting part are connected with the internal corner positioning part; and the internal corner supporting part supports the internal corner positioning part. The brickwork corner constructional column formwork shaping and reinforcing device has the beneficial effects that damage to brickwork is avoided, finished brickwork protection is facilitated, the appearance quality of the brickwork is guaranteed, and the maintenance workload of the brickwork is reduced; and main components are formed by welding angle steel and square steel and are made of leftover materials of a construction site, manufacturing is convenient, meanwhile, the brickwork corner constructional column formwork shaping and reinforcing device can be repeatedly used, and the construction cost is saved to a certain degree.

The invention discloses a capsule tearing assisting device for centrally positioning a capsule bag. The device comprises a cornea imprint ring (1) which is connected to a dial disc (2) through connecting rods (3), the cornea imprint ring (1) is concentric to the dial disc (2), and 360 degree scales are marked on the dial disc (2). Length based on mm is marked on the connecting rods (3). The dial disc (2) is connected to a bent transitional handle (4) (the angle is about 145 degrees). The transitional handle (4) is connected to a handle (5). The two connecting rods (3) are crossed, and the crosspoint of the connecting rods is the center of circle of the cornea imprint ring (1). By adopting a design concept that the dial disc and the cornea imprint ring are combined, the central position ofthe capsule bag of a patient can be positioned precisely according to the actual eye anatomical structure of the patient. CCC guide is carried out by using the cornea imprint ring, and the central property of the capsule bag of CCC is achieved finally, so that the operative accuracy and the postoperative effect are improved.

The invention discloses a method and a device for coding images. The method includes dividing an image into code blocks and processing the code blocks; selecting processing techniques for the code blocks according to characteristics of coding coefficients of the image; scanning coding coefficients in reversed order; adaptively contracting brightness and chromaticity coefficients according to the selected processing techniques. The method and the device have the advantages that a reasonable process for contracting the coefficients is designed, so that values of high-frequency coefficients can be reduced without affecting the subjective visual quality, the coding rate is reduced, and the coding efficiency is improved.

The invention relates to a method for manufacturing a secondary post-cast ring beam for a house filled wall of an elevated duplex building, a hidden duplex building or a building with high floor height. The method comprises the following steps: embedding a U-shaped anchorage rib at one end of a connection component into a main body wall/column, wrapping a joist steel at the other end with a flexible asphalt felt, arranging a flexible polyphenyl board at the end part of the joist steel, binding reinforcement frame upright ribs and reinforcement stirrups at the periphery of the connection component, then inserting the connection component into a ring beam reinforcement framework, filling the flexible polyphenyl board between the two ends of the molded ring beam and the main body wall/column after a support die is cast with concrete, and filling the flexible polyphenyl board or a horizontal sliding layer of the flexible asphalt felt between the lower port of the ring beam and the filled wall. The two ends of the secondary post-cast ring beam manufactured by the method are flexibly connected, and the lower port and the filled wall can freely deform and slide so as to prevent common cracking faults of the filled wall and the painted decorative surface layer and the like, ensure the impression quality of the wall and reduce the rectification cost of the engineering.

The invention discloses an auxiliary drawing tool used for elliptical teaching. The drawing tool comprises a drawing frame. The bottom of the drawing frame is fixedly bonded with a magnetic suction strip. The top of the drawing frame is provided with a rotation mechanism. The tool relates to the auxiliary teaching apparatus technology field. A cross clamping design mode is adopted, the tool is fixed to a blackboard through a magnetic attraction principle so that drawing is performed, and a drawing teaching speed is increased and simultaneously drawing visual quality is ensured. A hard materialdesign is adopted and a bottom is provided with a magnetic attraction structure. On one hand, an adsorption area can be increased and sliding is not generated during drawing; on the other hand, a drawing track is accurately limited and a drawing ornamental value is increased. A guide wheel is mainly used for reducing the frictional force of an internal mechanism during operating and increasing drawing fluency, and simultaneously, during movement, the guide wheel can crush chalk dust so that conditions that equipment is stuck and operation difficulty is increased are prevented.

The invention relates to a spectacle frame wearing deformation displacement measuring device which is formed by a fixing support, a camera fixing plate, a spectacle frame size measuring plate and a high resolution digital camera. The fixing support comprises at least two layers of horizontal fixing support bodies, the camera fixing plate is fixed on the upper layer fixing support body, the spectacle frame size measuring plate is fixed on the lower layer fixing support body, a camera lens clamping hole for placing a camera lens is arranged in the center of the camera fixing plate, and scales are marked on the spectacle frame size measuring plate. The spectacle frame wearing deformation displacement measuring device has the advantages that an optical method is used for measuring, the whole shooting process is finished by a machine, the final results are measured and analyzed through engineering drawing software, the objectivity of the whole measurement is greatly guaranteed, shortcomings of the traditional manual measuring method are overcome, obtaining of dynamic comparison parameters relative to spectacle frame stability are facilitated, spectacle frame deformation displacement situations caused by various reasons after a user wears a pair of spectacles can be corrected in time, the spectacle wearing visual quality and normal refraction development of eyes can be guaranteed, and the spectacle frame wearing deformation displacement measuring device is worth popularizing and applying.

The invention relates to a texture-based adaptive image watermark embedding method, a texture-based adaptive image watermark embedding system, a texture-based adaptive image watermark extracting method and a texture-based adaptive image watermark extracting system. The adaptive image watermark embedding method comprises the following steps: determining a watermark embedding area in a carrier imageinto which a watermark is to be embedded, the watermark embedding area being a plurality of non-overlapping texture rough areas; utilizing a multiple regression analysis method to establish a texture-based adaptive parameter adjustment model for adjusting embedding parameters in the watermark embedding method; and embedding a watermark into each watermark embedding region by using the watermark embedding method. According to the invention, the richness of image textures can be truly measured; accurately positioning a texture rough area in the image; through multiple regression analysis, a function relationship between a watermark embedding parameter and a global texture value and a local texture value of a texture rough region is established, and the watermark embedding parameter is adaptively adjusted according to the texture value of the region, so that the invisibility of the watermark is ensured to the greatest extent, and the robustness of the watermark is enhanced.

The invention relates to the technical field of image processing, and discloses a high-capacity reversible image watermarking algorithm based on a multi-scale decomposition and interpolation algorithm, which comprises a watermark embedding part and a watermark extracting part, and is characterized in that the watermark embedding capacity is further increased through multi-scale decomposition and interpolation expansion before watermark embedding; watermark information is embedded through a generalized interpolation expansion method, pixel value overflow of overflowing corresponding image pixelpoints is avoided through gray scale overflow processing, then the embedding capacity is further increased, and watermark extraction is an inverse process of watermark embedding. Compared with the prior art, the method has the advantages that when equivalent watermark information is embedded, good watermark-containing image visual quality is kept, and better invisibility and payload capacity areachieved.

The invention discloses an extensible man-machine cooperation image coding method and coding system. The method comprises the following steps: extracting an edge graph of each sample picture and vectorizing the edge graph as a compact representation for driving a machine vision task; performing key point extraction in the vectorized edge image to serve as auxiliary information; respectively carrying out entropy coding lossless compression on the compact representation and the auxiliary information to obtain two paths of code streams; carrying out preliminary decoding on the two paths of code streams to obtain an edge graph and auxiliary information; inputting the edge graph obtained by decoding and auxiliary information into a generative neural network, and performing forward calculation of the network; carrying out loss function calculation according to the obtained calculation result and the corresponding original picture, and carrying out back propagation on the calculated loss to a neural network to carry out network weight updating until the neural network converges, so as to obtain a double-path code stream decoder; obtaining an edge image and auxiliary information of a to-be-processed image, and encoding and compressing the edge image and the auxiliary information to obtain two paths of code streams; and enabling the two-path code stream decoder to decode the received code stream and reconstructs an image.