31 results about "Viola" patented technology

Redeye removal methods detect redeyes in a two-step procedure. In the first step it detects faces in the input image and in the second step it searches for redeyes in the detected faces. The methods include the introduction of an efficient skin tone detector that reduces the average complexity of a Viola-Jones based face. We also introduce a summed area table (SAT) based optimization in our eye detector stage that reduces the complexity in the eye detector by a factor of 5× when compared to an optimized direct search method.

The invention discloses a method and a device for creating a sample library for large-scale face mode analysis. The method comprises the following steps: obtaining pictures in batches through a network; performing face detection and screening on the obtained pictures by adopting a Viola-Jones face detection algorithm; performing normalization processing on the pictures with faces based on a face ratio; performing gender classification on cut pictures by adopting PCA (principal component analysis) and LDA (linear discriminant analysis) algorithms; comparing similarity of grey histograms of the pictures to remove repeated pictures; performing secondary screening and artificial marking on the face sample library as needed and storing the face sample library into a local memory. The device comprises a network communication interface, display equipment, input equipment, a memory and a processor, wherein the processor is used for executing the method for creating the sample library for large-scale face mode analysis. The method and the device reduce the labor intensity of scientific research personnel during creation of the face sample library used for face mode analysis to a relatively great extent, increase the creation speed of the sample library, and also can be used for creating sample libraries for related scientific research of other mode identification.

The invention discloses an ATM terminal human face key points partially shielding detection method based on a random forest comprises the following steps: acquiring an image when a bank card is inserted into an ATM, improving the gray image contrast degree through a multi-scale Retinex enhancing method, positioning a human face through adoption of a Haarcascade human face detection algorithm, speculating a human face gesture based on a gesture estimation tree model of the random forest, judging a human face shielding type through a Viola Jones frame, and, according to the estimated human face gesture, selecting a random forest key point detection model and calibrating a human face key point of a position which is not shielded. An influence of the gesture on human face key point detection is reduced through gesture pre-estimation based on the random forest, an influence of shielding on a human face characteristic is reduced through automatic recognition of a shielding portion and key point marking of a non-shielding portion, a high-precision human face local characteristic can be provided for ATM-based identity recognition of a shielded human face, and human face identity recognition precision is improved.

The invention discloses a worker safety helmet wearing real-time detection method based on video analysis. The method comprises the steps that captured video frames are read in real time from a camera in a monitoring area; a Viola-Jones detector is used to classify the image of the current frame to identify the upper body of a human body; a detected target is located, and the highest point of the detected upper body of the human body is determined; the highest point is used as a reference point to extract a corresponding area; and finally the color of the image area is determined according to color characteristics to determine whether a detected worker wears a helmet; and if a worker who does not wear a helmet is in the detection area, an alarm is given to ensure the safety of workers entering the work area. According to the invention, the influence of the background environment on helmet detection can be reduced; the helmet wearing detection accuracy of workers in the identification area is greatly improved; and the method has the advantages of fast detection speed and good instantaneity.

The invention provides a method and device for controlling an unmanned aerial vehicle to rotate along with the face. A camera is arranged on the unmanned aerial vehicle. The method includes the steps that the face in an image is detected through a Viola-Jones face detection framework; the face is tracked, and two-dimensional coordinates of the five sense organs of the face in the image are determined; a three-dimensional face standard library is searched for three-dimensional coordinates of the five sense organs of the face in a world coordinate system; the three-dimensional face standard library is obtained in advance; three-dimensional coordinates of the face relative to the camera on the unmanned aerial vehicle are obtained according to the two-dimensional coordinates of the five sense organs of the face in the image and the three-dimensional coordinates of the five sense organs of the face in the world coordinate system; the unmanned aerial vehicle is controlled for position adjustment to enable the camera to be aligned with the face through the three-dimensional coordinates of the face relative to the camera of the unmanned aerial vehicle. When the unmanned aerial vehicle tracks a user to take pictures or record videos, the unmanned aerial vehicle can move along with rotation of the face, and it is guaranteed that a camera lens of the camera on the unmanned aerial vehicle is always aligned with the face of the user.

Violin or viola teaching aids are disclosed that are suitable to be attached to either a violin or viola bow. The aids with elongated raised ridges provide a tactile indication of the proper placement of the right hand on a bow. An embodiment is disclosed that has a cylindrical shape with a hollow passageway that fits over the stick of a bow. A plurality of holes provide lateral openings into the hollow passageway. The rims of the holes provide a tactile indication of the location in which the fingers and thumb are to contact the bow. Embodiments are disclosed that are comprised of resilient sponge rubber.

A viola / violin shoulder rest includes a first pad and a second pad made of soft foamed plastic material. A retainer is fixed between the first pad and the second pad. Each of the first pad and the second pad is formed with a sound reflection area which is a through hole. The sound reflection area of the first pad is alternatively stuffed with a natural sponge block. The sponge block is selectively coated at its top a gold foil. A number of feet made of silicon gel are fixed on the first pad in delta arrangement. A number of fastening posts are disposed on an upper surface of the retainer. A resilient band extends through where between the retainer and the second pad for the viola / violin player to deliver optimal sound color and quality.

A teaching aid for instructing proper finger position on a “fret-less” stringed instrument (for example, violin, viola, cello, bass) comprises a template that is positioned along the fingerboard at the proper finger position location (i.e., “first position”) for the first four half-steps associated with each string. A set of raised, “Braille-like” features is formed as a grid pattern on the surface of the template, with each row of features associated with each tone half step. Each “row” contains a set of three raised features—a separate feature located between an adjacent pair of strings. Once the template is properly positioned, the raised features are pressed out of the template and transferred to adhere to the fingerboard. By locating the raised features between the strings, the teaching aid does not interfere with sound quality or the ability to induce vibrato to the playing, while still providing a tactile clue for the proper note location for intonation purposes. Once the student has mastered proper finger placement, the raised features may be removed.

A shoulder rest (50) comprises an attachment piece (60), an abutment piece (62), and a padding piece (64) and is adapted for supporting a stringed instrument (80) such as violin or viola during playing, wherein the attachment piece (60) is adapted to clip onto an end button (82) of the stringed instrument (80) such that the contact surface between the stringed instrument (80) and the shoulder rest (50) is juxtaposing a bottom block of the stringed instrument (80).

A shoulder rest (50) comprises an attachment piece (60), an abutment piece (62), and a padding piece (64) and is adapted for supporting a stringed instrument (80) such as violin or viola during playing, wherein the attachment piece (60) is adapted to clip onto an end button (82) of the stringed instrument (80) such that the contact surface between the stringed instrument (80) and the shoulder rest (50) is juxtaposing a bottom block of the stringed instrument (80).

The invention discloses a treatment agent for oily wastewater and a preparation method of the treatment agent. the treatment agent comprises the following raw materials in parts by weight: 6-12 partsof bentonite, 5-10 parts of vermiculite powder, 4-6 parts of polyvinyl alcohol, 1.3-2.8 parts of formamide, 3-6 parts of gelatin, 15-22 parts of viola tricolor, 6-8 parts of nanographene, 3-5 parts ofmagnetite slag, 2.4-4 parts of fruit tannin and 3.5-5 parts of tartaric acid. The treatment agent provided by the invention is wide in source of raw materials, less in dosage by adopting different preparation processes for various raw materials and then carrying out a reaction of the various raw materials in a reaction kettle, good in adsorption, flocculation and sedimentation effect on oil, highin oil removal rate, and capable of meeting use requirements of people.

A shoulder rest structure for a violin and a viola is disclosed. The shoulder rest structure comprises a first body and a second body. The first body has a positioning piece in which the positioning piece has a first connecting part and a first counterpart connected to two ends thereof. The first connecting part connects at least one first adjustment piece; the first counterpart connects at least one second adjustment piece. The second body has a first side and a second side; the first side of the second body attaches to the first body correspondingly. By means of the ergonomic design of the present invention, the violin / viola practice is made more comfortable and the length of the shoulder rest can be adjusted by the user according to requirements.

The invention discloses a dye absorption agent and preparation method and application thereof. The dye absorption agent is prepared from, by weight, 22-30 parts of illite, 3-7 parts of oxidized polyethylene, 2-6 parts of acetylacetone, 1-5 parts of cobalt nitrate, and 9-17 parts of 3-hydracrylic acid. In the preparation method, the illite and oxidized polyethylene are blended and grinded, 3- hydracrylic acid, acetylacetone and cobalt nitrate are used in the treatment, dye absorption agent is prepared through ultrasound irradiation; the dye absorption agent absorbs heavy metal, different types of dyes as well as other organic pollutant, has strong adsorption ability for dye material, is non-toxic for human, is non-corrosive, has stable performance, cleans easily, causes no second time pollution to water. The dye absorption agent prepares and operates easily, the cost of the dye absorption agent is low, the efficiency of absorption is high; the dye absorption agent is environmentally friendly, facilitates industrialization production, suits for treating all the wastewater polluted by organic dyes, including direct scarlet, cationic brilliant red, acid brilliant scarlet, methylthionine chloride, neutral red, viola crystallina, helianthin B and other organic dyes.

An ergonomic harness for chin-free support of violins and violas that incorporates clamps for a stringed instrument, a support arm, and a stabilizer. Adjustable clamps allow the harness to accommodate instrument size variations and provides an adjustable binding force. A neck strap secures the harness system around the neck of a person playing a stringed instrument and holds the harness in place against the person's shoulder and / or chest.

The invention relates to a string (1) for a stringed, bowed musical instrument, for example a bowed musical instrument like violin, viola or cello. The string has a first, load bearing core (10) and a winding strand (100) wound around the first core in helical windings. A damping agent (40) suitable for vibration damping is arranged in a profiled recess (150) in the winding strand. The recess is functioning as a reservoir between the first core and the winding strand. The reservoir is containing and / or retaining the damping agent so as to, at least, reduce dissipation of the damping agent through a gap between the adjacent helical windings of the winding strand. The invention results in a longer lifetime with optimum acoustic properties of the string.

The invention discloses a method and device for constructing a large-scale human face pattern analysis sample library. The method includes: acquiring pictures in batches through the network; using the Viola-Jones face detection algorithm to perform face detection and screening on the acquired pictures; The face ratio normalizes the pictures containing the faces; the PCA+LDA algorithm is used to classify the cropped pictures by gender; the similarity comparison of the gray histogram of the pictures is used to eliminate duplicate pictures; the face samples are processed as needed The library was subjected to secondary screening and manual labeling, and then stored to local storage. The device includes a network communication interface, a display device, an input device, a memory and a processor, wherein the processor executes the method for constructing a large-scale face pattern analysis sample library. The present invention greatly reduces the labor intensity of scientific researchers building a face sample library for face pattern analysis, improves the speed of building a sample library, and the present invention can also be used for building sample libraries for other pattern recognition-related scientific research.

The invention relates to a four-string viola, comprising: a viola structure, including a headstock, a body, a string system, a bow and four strings, the bow includes a bow rod, a bow point, a bow hair, Bow wood and accessory pendants; the string system includes pegs, tailpieces and bridges, the pegs are four hardwood pegs in a conical shape, set at the headstock position, and passed through the tapered pegs on the side of the peg box holes are fixed; the four strings are respectively wrapped around the four hardwood pegs of the peg, and the string board is arranged at the tail position; the bridge is a piece of wood made of maple, used to support the Four strings, the thickness, material, shape and position of the bridge will affect the tone of the viola structure; the electronic eye capture device is set on the headstock of the viola structure, and is used to capture the viola body Processing, to obtain and output the corresponding piano sound capture image. Through the invention, the performance of the viola is improved.

A vibrato training tool aids positioning of a violinist's or violist's hand to a location where the player can perform vibrato with support so that the technique is learned more efficiently. For instance, the student wears a glove having a spacer coupled to it that aligns to rest against a bout of the violin so that the fingers can practice the vibrato movement while the student's wrist is supported against the violin or viola body, such as at the bout. An oscillation indicator swings freely relative to the glove to provide a visual indication of the vibrato motion.

An adapter for mounting a support device for a stringed instrument, such as a violin or a viola. The adapter may include a first bracket having an area for at least partially encircling the tailpiece button of the stringed instrument, a second bracket, and a connecting device. The first bracket and the second bracket are disposed and connected by the connecting device in such a way that the area of the first bracket at least partially encircling the tailpiece button is in stationary contact with the tailpiece button.

An ergonomic harness system for hands-free support of violins and violas that incorporates two partly overlapping concave / convex shaped plates with attached rib tabs on each end that secure the plates to the instrument in a cross-pattern at the C-bouts and bottom edge of the instrument body. Mechanisms for expanding and contracting the plates allows the harness to accommodate instrument size variations and provides an adjustable binding force. A telescoping chest pad is secured to one end of the concave plate for supporting the instrument using the body.

The invention relates to a string (1) for a stringed, bowed musical instrument, for example a bowed musical instrument like violin, viola or cello. The string has a first, load bearing core (10) and a winding strand (100) wound around the first core in helical windings. A damping agent (40) suitable for vibration damping is arranged in a profiled recess (150) in the winding strand. The recess is functioning as a reservoir between the first core and the winding strand. The reservoir is containing and / or retaining the damping agent so as to, at least, reduce dissipation of the damping agent through a gap between the adjacent helical windings of the winding strand. The invention results in a longer lifetime with optimum acoustic properties of the string.

The invention discloses an acoustic evaluation method and experimental device of a viola resonance box based on impedance technology, and is characterized in that: the experimental device includes an impedance analyzer, a viola resonance box, a first piezoelectric sensor, and a second piezoelectric sensor , the 3rd piezoelectric sensor, the 4th piezoelectric sensor, computer and software processing system thereof, test experiment device and evaluation method of the present invention, do not need the player to play the viola, directly use the impedance analyzer to viola resonance box in alto-1 Zone, Alto Zone 2, Treble Zone 1, and Treble Zone 2 are scanned to test the impedance spectrum of the viola resonance box within the scanning frequency range, and then judge the viola resonance box according to the impedance spectrum of the viola resonance box. Pros and cons. The invention has simple structure and reasonable design, overcomes the artificial factors in evaluating the timbre of the viola in the traditional method, objectively evaluates the timbre of the viola resonance box, and provides a brand-new viola evaluation method for viola manufacturers.

The invention discloses a manufacturing process of a vehicle seat cushion. The vehicle seat cushion comprises a seat cushion base body and a medicine film wrapping the seat cushion base body; the medicine film is formed by mixing and grinding Chinese herbal medicine into powder and putting powder into a bag; the base body is composed of, by weight, 12 parts of polyglycol ether, 15 parts of polypolyols, 24.5 parts of water, 13 parts of fire retardants and 18.5 parts of triethylene diamine. The medicine film is composed of, by weight, 25.5 parts of viola and 23.5 parts of dandelion. The manufacturing process of the vehicle seat cushion can overcome the defects that the comfort is poor, the matching ratio is not reasonable and human health is not facilitated in the prior art, and achieve the advantages of being good in comfort, reasonable in matching ratio and favorable for human health.

A vibrato training tool aids positioning of a violinist's or violist's hand to a location where the player can perform vibrato with support so that the technique is learned more efficiently. For instance, the student wears a glove having a spacer coupled to it that aligns to rest against a bout of the violin so that the fingers can practice the vibrato movement while the student's wrist is supported against the violin or viola body, such as at the bout. An oscillation indicator swings freely relative to the glove to provide a visual indication of the vibrato motion.

The invention discloses a gesture recognition device and method. The system device comprises a monocular camera, a PC and a service robot. The process utilizes Viola-Jones detector and the Gaussian skin color model to carry out gesture segmentation, so that the influence of background and illumination is effectively overcome.