Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

511 results about "Skin colour" patented technology

Skin Colour. Human skin comes in a wide variety of colours, ranging from shades of dark brown to almost white. Although an individual’s skin colour is influenced by numerous factors, the most significant is its content of a pigment called melanin.

Optical flow-based gesture motion direction recognition method

The invention discloses an optical flow-based gesture motion direction recognition method. The method comprises the following steps of acquiring an image sequence on the front of a computer by using a common camera with video graphics array resolution, and preprocessing the image sequence; distributing skin samples in an approximately elliptical area in a CbCr plane in a concentrated way, and determining whether to accord with skin colors according to a fact whether a pixel point falls in the elliptical area in the CbCr plane; performing morphological reconstruction on binary images subjected to skin color detection, and adopting closed operation in morphology; marking each white connected region, calculating an area of each white connected region, arraying white connected regions from large to small, and reserving three largest connected regions; reducing the resolution of the images, and acquiring an optical flow motion vector in a skin color area by using a pyramid LK optical flow method; judging the direction of the optical flow motion vector; judging the direction once every other two frames, and giving a result if directions are consistent twice; after a user is familiar with and masters the gesture motion operation rule, moving the gesture in the upper, lower, left and right directions before the camera. According to the method, real-time interaction can be completed, and the gesture motion direction recognition accuracy can be higher than 95 percent.
Owner:COMMUNICATION UNIVERSITY OF CHINA

Objectionable image distinguishing method integrating skin color, face and sensitive position detection

The invention relates to an objectionable image distinguishing method integrating skin color, face and sensitive position detection. The method comprises the following steps that a skin color model is firstly built, the face detection is carried out, the constituted feature vector of skin color and face features is extracted, a SVM (support vector machine) algorithm is utilized for training, and a SVM classifier is obtained; then, by aiming at the female breast in the local key position of the human body, SIFT (scale-invariant feature transform) features are extracted, an Adaboost algorithm is utilized for training, and an Adaboost classifier is obtained; next, by aiming at the female private parts in the local key position of the human body, the trunk region of the human body is determined, haar-like features are utilized as a template for carrying out searching and matching in the trunk region of the human body; and finally, the SVM classifier, the Adaboost classifier and the template matching method are adopted for carrying out image detection, a C4.5 decision-making tree method is utilized for integrating detection results, a decision-making tree model is built, the decision-making tree model is adopted for recognizing objectionable images, and the final distinguishing results are given. The objectionable image distinguishing method has the advantages that the detection accuracy is improved, and meanwhile, the execution speed is ensured.
Owner:XI AN JIAOTONG UNIV

Field depth-based portrait colour processing method and device, and electronic device

The invention discloses a field depth-based portrait colour processing method. The field depth-based portrait colour processing method is used for processing scene data acquired by an imaging device; and the scene data includes a main image of a scene. The processing method comprises the following steps of: identifying a portrait area in the main image of the scene according to depth information of the scene data; obtaining dress colour parameters in the portrait area according to the portrait area; and, processing colour parameters of a face area in the portrait area according to the dress colour parameters and a pre-set processing manner, so that an optimized image is obtained. The invention further discloses a processing device and an electronic device. By means of the image saturation processing method, the processing device and the electronic device disclosed by the invention, corresponding colour parameters are made for the face area in the image including the portrait based on the dress colour information and the corresponding pre-processing manner; therefore, colour parameter processing of the face area is more matched with a shot scene and the like; furthermore, colour adjustment can be carried out without according to skin colour features; the effect is better; and the user experience is better.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD

Skin identification method based on skin color model

ActiveCN103455790ATo overcome the inaccurate identificationOvercoming Brightness Preference ProblemsCharacter and pattern recognitionFace detectionPattern recognition
The invention relates to a skin identification method based on a skin color model. The skin identification method comprises the steps of (1) carrying out face identification on an image, and obtaining a face area, (2) carrying out mean value computing on the obtained face area obtained in the step (1), and obtaining a mean skin color, (3) computing a skin color probability mapping table of the current image according to the mean skin color obtained in the step (2), and (4) carrying out skin color identification on the current image according to the skin color probability mapping table obtained in the step (3), and obtaining a result graph of the skin color probability of the current image. According to the skin identification method, the skin color mean value after face detection is used for building the skin color model, the skin identification method can adapt to images shot under various conditions, and wide covering of the application range is achieved. In addition, according to the skin identification method, training data are not required to be accumulated, implementation can be easily achieved, comparison with huge training data is not required, and the operation efficiency is improved. Identification is carried out through the skin color model, the identification accuracy is high, and the defect that under excessively bright or excessively dark conditions, skin identification is not accurate is overcome.
Owner:厦门美图宜肤科技有限公司

Composition containing bifida ferment lysate and preparation method and application of composition to cosmetics

The invention belongs to the field of cosmetics, and particularly relates to a composition containing bifida ferment lysate and a preparation method and application of the composition to the cosmetics. The composition includes a bifida ferment lysate composition, a peptide composition and a rice extract, and the composition is prepared from the following components in parts by mass: 1-40 parts ofthe bifida ferment lysate, 1-20 parts of the peptide composition, and 1-20 parts of the rice extract, and the composition further includes 1-20 parts of a moisturizing composition, and the bifida ferment lysate composition includes bifida freeze-dried powder, and a bifida freeze-dried powder lyase solution. The composition containing the bifida ferment lysate has the beneficial effects that a formula is reasonably set, functions are various, wrinkles can be significantly reduced, the pigment content is reduced, skin glossiness is increased, the skin color is brightened, skin elasticity is increased, the skin barrier is repaired, the water loss is reduced, the composition has no stimulation to the skin, and at the same time, the composition has the functions of preventing skin aging and keeping moisture for a long time, and makes the skin obtain a healthy and natural bright white state.
Owner:天津宝恒未来科技有限公司

Skin color layering-based human face detection method

The invention provides a skin color layering-based human face detection method. The method comprises the steps of firstly building a human face skin color model according to a human face candidate region; secondly performing skin color region segmentation by utilizing the human face skin color model, approximately describing a human face shape by using an ellipse, and processing an elliptic region not in the range as a non-human face region; thirdly further removing the non-human face region according to texture complexity; fourthly rotating the human face candidate region to perform directional normalization; and finally performing connected domain analysis by adopting a human face template. According to the method, an image is preprocessed by utilizing human face skin color characteristics, so that the human face search range is greatly reduced; in addition, the calculation complexity of the human face skin color characteristics is low, and the method is very robust for geometric changes such as human face rotation, zooming and the like, so that the human face detection using the human face skin color characteristics is very useful; and the method provided by the invention is quick, accurate, good in robustness and relatively wide in application range, and can be applied to the aspects of image identification, voice identification, data mining, machine vision and the like.
Owner:SHANGHAI DIANJI UNIV

Masked man event automatic detection method based on skin color characteristics

The invention provides a masked man event automatic detection method based on skin color characteristics. According to the method, after a video file to be processed is read, a video image is firstly zoomed, color images in a video are converted into grayscale images, then an object motion foreground is obtained by use of a frame difference method, next, a motion object rectangular box is obtained, then head detection is carried out, face detection is performed in a head area, next, skin color segmentation is performed on the same area of an original image, and finally a masked man judgment is made. A user selects a source video and carries out masked man detection on the video by use of the method provided by the invention so that the problem is solved that video monitoring cannot actively detect illegal activities of a masked man. Since the method does not have specific requirements for a video scene, worries about replacement of a different masked man detection technology due to different scenes are unnecessary. Besides, multiples methods are used for greatly reducing a target scope under the condition that detection accurate is not lost, and the method provided by the invention is simple in calculation and can be applied to a real-time environment.
Owner:SOUTH CHINA UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products