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184results about How to "Reduce misidentification" patented technology

Apparatus and System for Recognizing Environment Surrounding Vehicle

In conventional systems using an onboard camera disposed rearward of a vehicle for recognizing an object surrounding the vehicle, the object is recognized by the camera disposed rearward of the vehicle. In the image recognized by the camera, a road surface marking taken by the camera appears at a lower end of a screen of the image, which makes it difficult to predict a specific position in the screen from which the road surface marking appears. Further, an angle of depression of the camera is large, and it is a short period of time to acquire the object. Therefore, it is difficult to improve a recognition rate and to reduce false recognition. Results of recognition (type, position, angle, recognition time) made by a camera disposed forward of the vehicle, are used to predict a specific timing and a specific position of a field of view of a camera disposed rearward of the vehicle, at which the object appears. Parameters of recognition logic of the rearwardly disposed camera and processing timing are then optimally adjusted. Further, luminance information of the image from the forwardly disposed camera is used to predict possible changes to be made in luminance of the field of view of the rearwardly disposed camera. Gain and exposure time of the rearwardly disposed camera are then adjusted.
Owner:HITACHI LTD

Apparatus and system for recognizing environment surrounding vehicle

In conventional systems using an onboard camera disposed rearward of a vehicle for recognizing an object surrounding the vehicle, the object is recognized by the camera disposed rearward of the vehicle. In the image recognized by the camera, a road surface marking taken by the camera appears at a lower end of a screen of the image, which makes it difficult to predict a specific position in the screen from which the road surface marking appears. Further, an angle of depression of the camera is large, and it is a short period of time to acquire the object. Therefore, it is difficult to improve a recognition rate and to reduce false recognition. Results of recognition (type, position, angle, recognition time) made by a camera disposed forward of the vehicle, are used to predict a specific timing and a specific position of a field of view of a camera disposed rearward of the vehicle, at which the object appears. Parameters of recognition logic of the rearwardly disposed camera and processing timing are then optimally adjusted. Further, luminance information of the image from the forwardly disposed camera is used to predict possible changes to be made in luminance of the field of view of the rearwardly disposed camera. Gain and exposure time of the rearwardly disposed camera are then adjusted.
Owner:HITACHI LTD

Augmented reality-based Chinese Pinyin combination recognition and reading learning system and recognition and reading method

InactiveCN106097794ARealization of recognition and readingReduce misidentificationElectrical appliancesPattern recognitionVowel
The invention relates to an augmented reality-based Chinese Pinyin combination recognition and reading learning system. The augmented reality-based Chinese Pinyin combination recognition and reading learning system includes recognition and reading Pinyin cards with pinyin pictures, a Pinyin picture image recognition module, a Pinyin combination processing module, a Pinyin recognition and reading module and a multimedia module; the Pinyin picture image recognition module calls the Pinyin combination processing module to process obtained Pinyin data when encountering a plurality of Pinyin cards; the output end of the Pinyin picture image recognition module is connected with the input end of the Pinyin recognition and reading module, so that multimedia unit marks formed by initial consonant combinations and final vowel combinations of the Pinyin can be obtained from the recognition and reading Pinyin cards with the Pinyin pictures and are recognized; the output end of the Pinyin recognition and reading module is connected with the input end of the multimedia module, so that specific pronunciations of Pinyin combinations and multimedia images related to the pronunciations can be outputted; the recognition and reading Pinyin cards with the Pinyin pictures are cards printed with Pinyin initial consonant images or final vowel images; and each card is printed with a Pinyin picture with unique identification features.
Owner:南京焦点方寸信息技术有限公司

Visual detecting and counting method for vehicle flow rate under complex road condition

The invention discloses a visual detecting and counting method for the vehicle flow rate under a complex road condition, belongs to the technical field of machine vision, and solves the problems that a visual detection method for counting the vehicle flow rate by counting the area of moving objects is extremely low in the counting accuracy and greatly influenced by the image quality under complex roads in which vehicles, pedestrians and non-motor vehicles are mixed. The method comprises that initial information is set; video images are read in a cyclic way, and an MSRCR algorithm is used to realize illumination equalization and color balance at the same time; an AdaptiveMedian algorithm is used for background modeling, and a movement foreground is extracted; opening operation is carried out on the foreground, and bonded moving objects are separated while noises are removed; a contour is searched, the area is calculated, and the contour is filled if the area is lower than a threshold; vehicles in the foreground are identified by utilizing Haar characteristics and an AdaBoost classifer; and vehicles in each frame of foreground are identified, and positions of the vehicles are recorded. Thus, the method is used to extract moving objects under the complex road condition accurately, identify the vehicles specifically, and counting the vehicles in the real-time collection video.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Chinese chess game intelligent virtual live-streaming method based on machine vision

The invention proposes a Chinese chess game intelligent virtual live-streaming method based on machine vision. The method comprises the steps: firstly collecting a stationary chessboard image, carrying out the coordinate calibration of the chessboard, and building a coordinate conversion relation between a real chessboard and a virtual chessboard; secondly building a state information table for describing the comprehensive features of the chessboard according to the position, name and color information of chess pieces in the chessboard image; thirdly setting a chessboard state change detection bidirectional reference line which is used for the dynamic detection of the changes of the chessboard; fourthly obtaining a real-time change image of the chessboard, determining the attribute of the chess pieces and the initial and target positions, and updating the state information table in real time; finally achieving the virtual live streaming of the game process through combining with a chess game rule, wherein the virtual live streaming contents comprise the voice explanation, virtual linkage and game replay. According to the invention, the method can achieve the onsite virtual live streaming of a Chinese chess game, is high in reliability, is high in adaptability, is convenient to use, can be used for the live streaming of various types of chess games, such as Go and Gobang.
Owner:中国人民解放军火箭军工程大学
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