Patent application number | Description | Published |
20090060280 | STEREO VISION SYSTEM AND STEREO VISION PROCESSING METHOD - A stereo vision system includes an image pre-processing unit for pre-processing the right and left images, and a stereo matching unit for carrying out stereo matching of the right and left images to acquire low-resolution distance information of the right and left images and high-resolution distance information of the right and left images upon detection of an object within a distance range through the low-resolution distance information. | 03-05-2009 |
20090141938 | ROBOT VISION SYSTEM AND DETECTION METHOD - A robot vision system for outputting a disparity map includes a stereo camera for receiving left and right images and outputting a disparity map between the two images; an encoder for encoding either the left image or the right image into a motion compensation-based video bit-stream; and a decoder for extracting an encoding type of an image block, a motion vector, and a DCT coefficient from the video bit-stream. Further, the system includes a person detector for detecting and labeling person blocks in the image using the disparity map between the left image and the right image, the block encoding type, and the motion vector, and detecting a distance from the labeled person to the camera; and an obstacle detector for detecting a closer obstacle than the person using the block encoding type, the motion vector, and the DCT coefficient extracted from the video bit-stream, and the disparity map. | 06-04-2009 |
20100070187 | HUMAN RECOGNITION APPARATUS AND HUMAN RECOGNITION METHOD - Provided are a human recognition apparatus and a human recognition method identifying a user based on a walking pattern. The human recognition apparatus includes a detecting unit detecting a vibration according to a user's walking, and outputting an electric signal, a pattern calculating unit acquiring a walker's walking pattern from the electric signal, and a user determining unit comparing the walking pattern with a previously measured reference data by user and identifying the user based on the comparison result. The human recognition apparatus and the human recognition method are robust against peripheral noise and can increase an acceptance rate through a simple structure and procedure by using the waling pattern, which is one-dimensional time information requiring no vast data throughput, as the user identification data. | 03-18-2010 |
20100157057 | APPARATUS AND METHOD FOR DETECTING PERSON - Provided is a person detecting apparatus and method in an intelligent mobile robot. The person detecting apparatus includes a camera, an observation system status input unit, an encoding unit, a decoding unit, and a person detection unit. The camera is mounted on a robot to output image information. The observation system status input unit determines whether the robot or the camera is in motion. The encoding unit receives the image information to output a bit stream including mode information. The decoding unit decodes the bit stream, extracts a block mode value of each macro block, and stores the same in a two-dimensional array. The person detection unit outputs detection information about a moving person using the determination information provided from the observation system status input unit and the block-mode two-dimensional array provided from the decoding unit. | 06-24-2010 |
20110148868 | APPARATUS AND METHOD FOR RECONSTRUCTING THREE-DIMENSIONAL FACE AVATAR THROUGH STEREO VISION AND FACE DETECTION - Provided are an apparatus and method for reconstructing 3D face avatar. The apparatus includes a face detection unit, a stereo matching unit, a bilateral filter, and a texture mapping unit. The face detection unit receives a left image and right image of a user, and detects a face image of the user from the left and right images using a face detection algorithm. The stereo matching unit receives the left and right images of the user, and creates a depth map image from the left and right images through a stereo matching operation which uses disparity between the left and right images. The bilateral filter abstracts the detected face image through a bilateral filtering operation. The texture mapping unit texture-maps the abstracted face image on the created depth map image to reconstruct a 3D avatar. | 06-23-2011 |
20110188740 | DEVICE FOR IMPROVING STEREO MATCHING RESULTS, METHOD OF IMPROVING STEREO MATCHING RESULTS USING THE DEVICE, AND SYSTEM FOR RECEIVING STEREO MATCHING RESULTS - Provided is a device for improving stereo matching results. The device for improving stereo matching results includes: a stereo camera unit outputting binocular disparity images by using binocular disparity between two images preprocessed according to a plurality of preprocessing conditions; a discrete cosine transform (DCT) unit generating DCT coefficients by performing DCT on the binocular disparity images; a streak estimation unit receiving the DCT coefficients and estimating amounts of streaks distributed on a screen by using AC coefficients, including streak patterns, of the DCT coefficients; a condition estimation unit estimating a preprocessing condition, corresponding to the smallest amount of streaks of the estimated amounts of streaks, of the plurality of preprocessing conditions, as an optimal condition, and a streak removal unit generating binocular disparity images without the streaks by changing predetermined AC coefficients of the DCT coefficients and performing inverse DCT on the changed DCT coefficients. | 08-04-2011 |
20120163703 | STEREO MATCHING SYSTEM USING DYNAMIC PROGRAMMING AND METHOD THEREOF - Disclosed is a stereo matching system and method using a dynamic programming scheme. The stereo matching system and method using a dynamic programming scheme according to the present invention may perform viterbi type stereo matching using at least two different penalty of disparity discontinuity (PD) values and synthesize the performed stereo matching results, thereby outputting a disparity map. | 06-28-2012 |
20120163704 | APPARATUS AND METHOD FOR STEREO MATCHING - An image matching apparatus includes a bilateral filter that filters a left image and a right image to output a second left image and a second right image; a census cost calculation unit performing census transform on a window based on a first pixel of the second left image and a window based on a second pixel of the second right image to calculate a census cost corresponding to a pair of pixels of the first and second pixels; a support weight calculation unit obtaining support weights of the left and right images or the second left and second right images; a cost aggregation unit obtaining energy values of nodes corresponding to the pair of pixels of the first and second pixels using the census cost and the support weights; and a dynamic programming unit performing image matching using dynamic programming by the energy values of each node obtained. | 06-28-2012 |
20130215234 | METHOD AND APPARATUS FOR STEREO MATCHING - Disclosed is a stereo matching method for calculating disparity from binocular images. The stereo matching method extracting distance information of objects included in images by using binocular images, includes receiving the binocular images acquired from a first camera and a second camera for acquiring the binocular images; processing the images so as to increase contrast between objects and background objects included in the received images by using a predetermined first algorithm; and performing, stereo matching using the processed images. An exemplary embodiment of the present invention outputs a disparity map in which objects and background are divided, thereby robustly recognizing a person or obstacles. | 08-22-2013 |
20140219549 | METHOD AND APPARATUS FOR ACTIVE STEREO MATCHING - An active stereo matching method includes extracting a pattern from a stereo image, generating a depth map through a stereo matching using the extracted pattern, calculating an aggregated cost for a corresponding disparity using a window kernel generated using the extracted pattern and a cost volume generated for the stereo image, and generating a disparity map using the depth map and the aggregated cost. | 08-07-2014 |