30 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.

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 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.

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 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.

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.