Patent application number | Description | Published |
20090033740 | VIDEO METHOD FOR GENERATING FREE VIEWPOINT VIDEO IMAGE USING DIVIDED LOCAL REGIONS - The present invention provides a method of generating a virtual viewpoint video image when the virtual viewpoint position is not located on a plane where a camera is disposed. In an environment in which a plurality of cameras having a horizontal optical axis are disposed in a real zone (for example, on the circumference) which surrounds an object, a video image of an arbitrary viewpoint on the circumference is generated. Further, by synthesizing video images photographed by a camera, a free viewpoint video image is generated from a virtual viewpoint (viewpoint from a high or low position) where no camera is placed. According to a method of achieving this, a travel distance of a display position is calculated by the local region synthesizing portion and this travel distance is reflected to the free viewpoint video image of a local region. | 02-05-2009 |
20090052776 | COLOR CORRECTION APPARATUS, METHOD AND COMPUTER PROGRAM - The present invention relates to color correction of video signals from a plurality of cameras. The apparatus has a correction order that defines a plurality of camera pairs and an order of the camera pairs, where each camera pair specifies a reference camera and a target camera. In the correction order, each camera is treated as a target camera at least one time, and the reference camera is treated as the target camera in a previous camera pair except for the first camera pair. The apparatus corrects a value of each pixel in a target image captured by the target camera based on a reference image captured by the reference camera, and replaces the target image by the corrected target image, for each camera pair in accordance with the order of the camera pairs. | 02-26-2009 |
20090110299 | APPARATUS, METHOD AND COMPUTER PROGRAM FOR CLASSIFYING PIXELS IN A MOTION PICTURE AS FOREGROUND OR BACKGROUND - The present invention relates to an apparatus and a method for classifying pixels in each frame of a motion picture as foreground or background. According to the invention, the apparatus has a decision unit and adjustment unit. The decision unit classifies a pixel as a foreground pixel, a background pixel or an undefined pixel based on a first threshold, a second threshold and a distribution value of the pixel representing an occurrence probability of a pixel value of the pixel. The decision unit sorts each pixel into a foreground pixel or a background pixel based on the classification result of the decision unit. | 04-30-2009 |
20090219396 | CALIBRATION APPARATUS AND METHOD FOR IMAGING DEVICES AND COMPUTER PROGRAM - The present invention relates to calibration of camera parameters for converting a world coordinate system, which indicates a position in the real space, to a coordinate used in an image and vice versa. The apparatus according to the invention has a detection unit, which determines corresponding pixel pairs from the captured image and the model image and outputs corresponding data indicating determined pixel pairs, and a selection unit, which selects pixel pairs to be left in the corresponding data and removes data related to an unselected pixel pair from the corresponding data for generating selected corresponding data. The apparatus further has a calculation unit, which calculates camera parameters based on the selected corresponding data. | 09-03-2009 |
20100026788 | METHOD FOR GENERATING FREE VIEWPOINT VIDEO IMAGE IN THREE-DIMENSIONAL MOVEMENT AND RECORDING MEDIUM - The present invention provides a method for generating free viewpoint video image in three-dimensional movement capable of synthesizing the free viewpoint video image from a viewpoint which looks down on an object from above. This method includes a process of taking multi-viewpoint video images using a plurality of cameras located on an identical plane and a camera not located on the identical plane, a process of generating video image at a viewpoint having the same azimuth as a desired viewpoint and located on the plane from the multi-viewpoint video images of the cameras on the plane, and a process of generating video image at the desired viewpoint from video image of the camera not located on the plane and video image at the viewpoint having the same azimuth as the desired viewpoint and located on the plane. | 02-04-2010 |
20100074468 | IMAGE GENERATING APPARATUS AND COMPUTER PROGRAM - The present invention relate to an image generating apparatus for generating an image from a viewpoint specified by a user. According to the invention, the apparatus has a storage unit that stores data of a plurality of images, and a disparity map generating unit that generates a disparity map. The disparity map is associated with a pair of images including a first image and a second image, and indicates corresponding pixels in the first and second images. | 03-25-2010 |
20110081019 | COMPRESSED DATA SCRAMBLED DISTRIBUTION DEVICE AND PLAYBACK DEVICE THEREOF - The present invention provides a scrambled compressed data distribution device that can perform a high-resistance scrambled compressed data distribution by selectively using a plurality of types of scramble information and a playback device thereof. | 04-07-2011 |
20110122133 | METHOD AND PROGRAM FOR CONSTRUCTING THREE DIMENSIONAL OBJECT MODEL - A present invention provides a method for constructing a highly accurate visual hull from multi view point images without highly accurate silhouettes. A method of the present invention comprises calculating continuous values to represent background likelihood of each pixel for every object image based on pixel values of said object images and those of said background images, calculating the projection pixels for each voxel at every captured view point by projecting each voxel in voxel space on each captured view point of said object images, and determining an object domain with judging whether said voxel belongs to the object domain or not based on the continuous value of said pixel at every captured view point. | 05-26-2011 |
20110228859 | OBJECTIVE IMAGE QUALITY ASSESSMENT DEVICE OF VIDEO QUALITY AND AUTOMATIC MONITORING DEVICE - An objective image quality assessment device of a video quality for estimating a subjective image quality from compressed bit stream is provided. The device includes a macro-block layer parameter analyzer for acquiring a quantizer scale size defined with respect to each macro-block and a coding type of a slice from a compressed bit stream, an orthogonal transformation coefficient in each macro-block, and a reference frame number in the macro-block applied with a motion compensating prediction, an average quantizer scale calculator for obtaining an average in a sequence of the quantizer scale size for every coding type of the slice, a spatial degradation feature calculator and a temporal degradation feature calculator for obtaining a spatial degradation feature and a temporal degradation feature, in each macro-block, and an image feature integrator for deriving the objective image quality based on the features obtained in the calculators. | 09-22-2011 |
20110321084 | APPARATUS AND METHOD FOR OPTIMIZING ON-SCREEN LOCATION OF ADDITIONAL CONTENT OVERLAY ON VIDEO CONTENT - A method of providing a video content formed of a plurality of successive video frames is disclosed. The method includes: extracting a visual feature from an image of each of subject frames which are all or some of the plurality of video frames; and selecting one of a plurality of candidate overlay insertion regions which are pre-assigned on each of the subject frames at different positions for allowing an additional content as a content overlay to be overlaid on the subject frames for display, as a final overlay insertion region, based on distances of the plurality of candidate overlay insertion regions from the extracted feature. | 12-29-2011 |