111results about How to "Reduce visual impact" patented technology

A staggered laser-etch line graphic system, method, and articles of manufacture are provided. One described method includes the steps of laser engraving a first plurality of lines associated with a first component section of a graphic on a surface of an article; laser engraving a second plurality of lines associated with a second component section of the graphic on the surface of the article; and controlling said laser engraving of the first plurality of lines and said laser engraving of second plurality of lines to reduce the visual impact of a demarcation line separating the first component section of the graphic and the second component section of the graphic.

The parameters of an optical code are optimized to achieve improved signal robustness, reliability, capacity and/or visual quality. An optimization program can determine spatial density, dot distance, dot size and signal component priority to optimize robustness. An optical code generator employs these parameters to produce an optical code at the desired spatial density and robustness. The optical code is merged into a host image, such as imagery, text and graphics of a package or label, or it may be printed by itself, e.g., on an otherwise blank label or carton. A great number of other features and arrangements are also detailed.

A laser-markable acrylic and PVC composition (commonly known as Kydex®) is lased using a CO₂ laser to differentiate a laser etched graphic or pattern from the base material. A discoloration may be controlled to improve an appearance of the graphic or pattern. An embodiment uses a 500 to 2,500 watt CO2 laser to provide a raster or vector graphic pattern on the Kydex® finished part. Yet another embodiment is to use a 500 to 2,500 watt CO₂ laser to provide a seamless raster or vector graphic pattern on a large piece of Kydex® which can then be cut and divided into multiple finished parts. In this case, an embodiment would include providing the necessary software and process controls to insure that the seams between individual parts that make up a larger part are without lines of demarcation.

Optical code signal components are generated and then transformed into signal bearing art that conveys machine readable data. The components of an optical code are optimized to achieve improved signal robustness, reliability, capacity and/or visual quality. An optimization program can determine spatial density, dot distance, dot size and signal component priority to optimize robustness. An optical code generator transforms tiles of an optical code or image embedded with the optical code into signal-bearing art using stipple, Voronoi, Delaunay or other graphic drawing methods so as to retain prioritized components of the optical code. The optical code is merged into a host image, such as imagery, text and graphics of a package or label, or it may be printed by itself, e.g., on an otherwise blank label or carton. A great number of other features and arrangements are also detailed.

The invention provides an image encryption method based on compression sensing and three-dimensional cat mapping. The method comprises the following steps: 1, calculating the initial state value and system parameters of a three-dimensional cat map chaotic system according to the pixel average value I of a plaintext image P, and scrambling the sparse coefficient matrix of P by zigzag; 2, bringing that initial state value and the system parameter into a three-dimensional cat map chaotic system, constructing a measurement matrix, and compressing and measuring the scrambled sparse coefficient matrix by the measurement matrix to obtain a ciphertext image F; 3, embedding F into that carrier image R accord to the LSB least significant bit embedding algorithm to obtain a visual safety image E. Theinvention can make the ciphertext image visually safe. Thus, when the ciphertext image is transmitted or stored together with other images, an attacker cannot find the ciphertext image from a plurality of meaningful images, thereby ensuring the safety of the ciphertext image or the related plaintext image.

A system for determining a position characteristic for an object in a room comprises an optically identifiable element (103) positioned on a background surface for a detection area of the room. A camera (101) is positioned across the detection area from the optically identifiable element (103) and captures an image comprising the detection area and the optically identifiable element (103). A detector (403) detects the optically identifiable element (103) in the image based on an optical property. An occlusion processor (405) determines an occlusion property for an occlusion of the optically identifiable element (103) in the image in response to the optical property. A position processor (407) determines a depth position in response to the occlusion property where, the depth position is indicative of a position of the object along the optical axis of the camera (101). The invention may for example allow presence detection and rough localization of a person in a room.

The invention discloses a digital watermarking method for generating a holographic image by applying a computer, which relates to a multimedia signal processing technology. The digital watermarking method for generating the holographic image by applying the computer has relatively good imperceptibility and strong anti-attack performance and is more flexible in calculating the holograph, low in cost and wide in application scope. The step for generating the holographic image by applying the computer serves as a watermark information sequence to be embedded into a carrier image. The steps for embedding the holographic image into the carrier image adopts a watermark embedding algorithm to embed the generated holographic image into the carrier image as the watermark information sequence of the carrier image, to ensure the robustness to various attacks and imperceptibility of a watermark. The step for a watermark detection algorithm is judging whether an image contains the watermark information; and the step for computer generation of the holographic image is generating the content of the watermark extracted on the computer clearly.

The present invention provides a digital text watermark technology based on topological character structure and has the basic principle that by means of altering the topological structure of character, different character fonts with the same semanteme are designed and properly coded to carry digital watermark information. The present invention includes several methods of designing character font and coding character font and watermark forming and detecting technology. The digital text watermark technology of the present invention has the features of less visual influence, simple and reliable detection, high robustness, great watermark information capacity, etc.

A subterranean equipment bay for housing telecommunications equipment comprising a vault having a floor, sidewalls, and a top cover, and having a shallow depth. The vault further includes means for ventilating the vault and means for removing water from the vault.

The invention discloses a general video digital watermark method mainly comprising analysis, embedding and extraction processes of a system design scheme. The analysis of the system design scheme comprises determination of a system function, watermark algorithms Ai to be embedded, embedding proportions of all algorithms and minimum extraction frame number Fmin; the watermark embedding process comprises frame distribution of a video file, watermark information pre-processing, embedding of watermark algorithms and formation of video files containing watermarks, wherein the embedding of watermark algorithms comprises the steps of: calculating embedding frame numbers, selecting embedding frames and embedding the watermark; and the watermark extracting process comprises frame distribution of the video file, selection of video frames to be detected, extraction of watermark information and calculation similarity. In the invention, the plurality of watermark algorithms are embedded at the same time and the embedding proportions can be selected, thereby the watermark method obviously enhances attack-resistant property; the watermark embedding ensures the appreciation and the embedding speed of the video file by using a non-frame-by-frame embedding way; in the watermark extracting process, the number of the detecting frames is less and the detection efficiency is improved; in addition, the general video digital watermark method also intensifies the capability of resisting frame edition.

Fundamental principle of the invention is that multiple fonts are designed for same character (string) in same semantic through changing relation of connection and disconnection between strokes of constituting character (string). Moreover, proper encoding is carried out for topological structure of these character fonts, and digital water ink information is carried out by these codes for different fonts of characters (string). The invention includes related contents: (1) method for designing multiple fonts of character; (2) method for encoding the said fonts; (3) method of unified encoding; (4) text digital water ink technique for encoding fonts respectively; (5) unified text digital water ink technique for encoding fonts. Features are: small influence on vision, simple and reliable detection method, good expansibility and large capability of information.

The invention provides a green and energy-saving anti-dazzle system for a highway tunnel portal. The green and energy-saving anti-dazzle system comprises a structural canopy and a controller which are arranged outside the highway tunnel portal, wherein vehicles enter and leave a tunnel through the structural canopy; an anti-dazzle unit connected with the controller and used for adjusting the transmittance amount automatically according to ambient light brightness is arranged at the top of the structural canopy. According to the green and energy-saving anti-dazzle system for the highway tunnel portal, the transmittance amount of the tunnel portal can be adjusted automatically according to the ambient light brightness, the problem about inside and outside light transition when the vehicles travel in and out of the tunnel portal is solved, the visual impact of drastic brightness change on drivers is reduced, not only can the strengthened lighting brightness level of the tunnel portal section be reduced, but also the solar energy can be converted into electric energy to supply power to the system, meanwhile, power is also supplied to night lighting lamps of the tunnel portal, energy consumption of the tunnel engineering during operation is reduced greatly, and the functions of energy saving and emission reduction are realized.

The invention discloses traceless povidone iodine disinfectant which is prepared from, by weight, 4.0%-4.5% of polyvinylpyrrolidone, 0.45%-0.55% of iodine, 0.2%-0.8% of chelating agents, 0.2%-0.8% of stabilizer, 0.1%-0.2% of potassium hydroxide, 0.4%-0.8% of disodium hydrogen phosphate, 0.2%-0.8% of citric acid, 0.1%-0.5% of potassium iodide, 0.2%-0.5% of potassium iodate and the balance water. According to the traceless povidone iodine disinfectant, after iodide and polyvinylpyrrolidone are in complexation, a certain complexation and wrapping technology is adopted, the traceless povidone iodine disinfectant is cleaned from a floor with clean water within 24 hours, and nearly no yellow trace exists when observation is conducted with eyes. Compared with ordinary povidone iodine, namely iodophor, the traceless povidone iodine disinfectant has great advantages on the aspect of floor yellowing, so that the visual influence on operating personnel in an operating room is reduced, and the service life of the floor of the operating room is prolonged.

The invention discloses a pedestrian re-identification system adversarial sample generation method and system, and the method comprises the steps: S1, inputting an original image into a generator based on a residual network, and generating adversarial disturbance; S2, adding the adversarial disturbance to the original picture bit by bit to generate a coarse adversarial sample I', performing feature connection on the coarse adversarial sample I' and the original picture, and inputting the coarse adversarial sample I' into a multi-stage discriminator to generate a binary mask graph capable of controlling the number of adversarial disturbance points; S3, performing bitwise multiplication on the binary mask pattern and the anti-disturbance; s4, inputting the adversarial samples into a pedestrian re-identification model to be attacked, and taking a return value of the model as input of a feature confusion loss function, an adversarial learning loss function, a smooth classification confusion function and a multi-scale structure similarity loss function; and S5, iteratively carrying out training processes from S1 to S4 for multiple times, and updating parameters of the generator and themulti-stage discriminator.

A device for determining a cinematic magnitude of a bicycle and a rate of the pedal-thrust exerted by an user on the pedals of the bicycle includes

• • a sensor of the bicycle, adapted to be associated to the bicycle, suitable for detecting the bicycle cinematic magnitude (ω_i) and for generating a signal representative of the bicycle cinematic magnitude;
  • a filter connected to the sensor of the bicycle cinematic magnitude, configured for receiving at the input the signal representative of the bicycle cinematic magnitude (ω_i) and for supplying, at the output, an optimized signal (ω_opt) of the bicycle cinematic magnitude; and
  • a module for the frequency-analysis of the optimized signal (ω_opt) of the bicycle cinematic magnitude, connected to the said filter

The invention discloses a segmented dimming control circuit for an electronic ballast of a fluorescent lamp. A time-settable transition segment brightness level is used for switching between bright and dark brightness levels, wherein the transition segment brightness level is constant or gradually changing, which is realized by a circuit control formed by a light adjusting control switch, a time delay circuit and the light adjusting signal. The segmented dimming control circuit for the electronic ballast for the fluorescent lamp has the following advantages that the segmented dimming mode using a transition segment with a constant or gradually changing brightness for switching between a high brightness and a low brightness can weaken the visual impact of the brightness switching operation on eyes of a user, and the circuit is simple and practical.

The present invention discloses a light source device comprising a light source, a light bat-wing type optical film and a glare control film. The light source comprising at least one light emitting element, having a glossy. The bat-wing light control type optical film having a first microstructure layer and a second microstructure layer, are disposed in the bat wing light type optical film opposite to a first surface and a second surface, wherein the first surface is exit surface facing the light-emitting elements. The microstructure of the first layer comprises a plurality of first prism type structure, and the second microstructure layer comprises a plurality of cylindrical lenses. The glare control film having a third microstructured layer disposed on a third surface glare control film, wherein the third surface is a smooth back to the light emitting element, the third layer comprises a plurality of second microstructured prism type structure, and the bat-wing light optical film is disposed between the light source and the glare control film.

A process for stabilization of biological sludge provides the step of laying in a containing volume, or basin (1), a draining material (2). In particular, the layer of draining material (2) can be a layer of gravel having granulometry set between 40 and 70 mm and a height (hi) about 25 cm. On the first layer (2) a second draining layer (3) can be laid comprising a material, for example gravel having granulometry less than the first layer (2), set between 4 and 6 mm. The second layer (3) has preferably a height (h2) about 15 cm. Once made the draining layers (2, 3) a planting step is made in the second layer (3) of a plurality of seedlings of an aquatic macrophyte, preferably Phragmites australis (10). The base granular filtering gravel layer has also the function of supporting the root ofthe seedlings. To ensure a high efficiency of the process a measured density of plants is chosen, corresponding to a relative distance between two seedlings of Phragmites australis set between 40 and60 cm. once achieved a measured vegetative growth, a first spilling in the containing volume (1) is carried out of an amount of biological sludge (12). The amount of sludge (12) fed in the containingvolume (1) corresponds to a predetermined height, set between 2 and 4 cm, of the layer of sludge (12) on the draining layer (3).

A transparent luminescent solar concentrator is provided. The transparent luminescent solar concentrator has luminophores embedded within a waveguide matrix that both selectively absorb and emit near-infrared light to an edge mounted or embedded solar photovoltaic array.

The invention discloses a multi-layer large-space building structure and a design method hereof. The multi-layer large-space building structure is suitable for a multi-layer large-space building withlow absolute span needs, and comprises a composite building structure main body, wherein the building structure main body comprises wall bodies, multiple layers of girderless floors and multiple supporting columns, the wall bodies are concrete laterally-stressed balance wall bodies, and are used for bearing horizontal force of the building structure main body while providing a vertical building space; the multiple layers of girderless floors are positioned between the wall bodies and are connected to the wall bodies, and a reinforcing steel bear for transmitting horizontal load is arranged inthe girderless floor at each layer; each supporting column is a freely distributed type swing column, and is used for bearing vertical force in the vertical direction; and the two ends of each supporting column are separately connected to the girderless floors. The invention further provides the design method for the multi-layer large-space building structure. The multi-layer large-space buildingstructure improves space use efficiency, reduces visual impact on space permeability and solves the horizontal stress problem of the building.

An antipanic kit (1) for doors (2) of the type comprising an antipanic lock (3) provided with a push-operated handle (4) for retraction, by means of suitable guiding mechanisms, of at least one respective latch (5) which is substantially parallel to the longitudinal direction of the lock (3), and of at least one retractable protrusion (6). The latch (5) protrudes from one end of the lock (3) and the at least one retractable protrusion (6) is connected to the lock (3) by means of a cable (8). Inside the lock (3), the end (9) of the guiding mechanisms is stably connected to one end (10) of the cable (8), the opposite end (1 1) is stably connected to means (12) for the retraction of the at least one retractable protrusion (6).

The invention provides a method for reducing influences of sleeving alignment errors. The method comprises the following steps: 1), obtaining the theoretical period value of a theoretical coding pulse signal sequence corresponding to any one sub-nozzle among two sub-nozzles, acquiring an actual coding pulse signal sequence corresponding to the sub-nozzle, and obtaining each actual period value of the actual coding pulse signal sequence; 2), according to the theoretical period value of the theoretical coding pulse signal sequence corresponding to the sub-nozzle, generating a white noise sequence; 3), respectively superposing each white noise in the white noise sequence to each actual period value of the actual coding pulse signal sequence so as to generate a coding pulse signal sequence after adjustment; and 4), according to the adjusted coding pulse signal sequence, controlling the printing time of the sub-nozzle so as to reduce the influences of the sleeving alignment errors of the two sub-nozzles. The invention correspondingly provides an apparatus for reducing the influences of sleeving alignment errors. According to the invention, the influences exerted by sleeving alignment errors existing in a conventional ink-jet digital printing device to human eyes can be reduced.