Patent application number | Description | Published |
20080222113 | IMAGE SEARCH METHOD, APPARATUS, AND PROGRAM - According to an aspect of an embodiment, a method for searching image data representing an image from a database by using a query image, the image data including information indicative of a shape of a contour of the image, comprising: obtaining a query image data representing the query image; extracting information indicative of a shape of a contour of the query image; and determining the image data in the database on the basis of correlation of the topological characteristics of the shapes of the contours of the images and the query image. | 09-11-2008 |
20090040225 | Apparatus and method for three-dimensional model retrieval - The present invention relates to three-dimensional model retrieval apparatus and method. The three-dimensional model retrieval apparatus according to the present invention comprises a model normalizing unit for rotating and/or translating a three-dimensional model so that main axis directions of the three-dimensional model are consistent with coordinate axes of a system coordinate system, and barycenter of the three-dimensional model is consistent with origin of the system coordinate system; a two-dimensional image generating unit for projecting said three-dimensional model respectively in a positive direction and a negative direction of each coordinate axis of said system coordinate system to generate a plurality of two-dimensional images; a model describing unit for generating a model descriptor of the three-dimensional model from said two-dimensional images; and a retrieving unit for retrieving, based on said model descriptor, a three-dimensional model which most matches an input query from a model database. | 02-12-2009 |
20120039508 | TARGET DETECTING METHOD AND APPARATUS - Target detecting method and apparatus are disclosed. In the target detecting method, edges in a first direction in an input image may be detected to obtain an edge image comprising a plurality of edges in the first direction; and one or more candidate targets may be generated according to the plurality of edges in the first direction, a region between any two of the plurality of edges in the first direction in the input image corresponding to one of the candidate targets. | 02-16-2012 |
20120249812 | METHOD AND APPARATUS FOR CAMERA MOTION ANALYSIS IN VIDEO - Embodiments disclose methods and apparatuses for camera motion analysis in a video, wherein one of the methods includes: analyzing, video segments with significant movement characteristics and video segments without any significant movement characteristic; for each segment without any significant movement characteristic, if a first motion type corresponding to a preceding neighboring video segment is different from a second motion type corresponding to a succeeding neighboring video segment, lowering detection criterions of the first type and the second type; judging whether the segment without any significant movement characteristic meets the lowered detection criterions; and merging the segment without any significant movement characteristic with a neighboring video segment according to the result of judgment. With the embodiments of the invention the motion type of a camera in the video can be detected more effectively and accurately, and the photographic intention of a user can be reflected more accurately. | 10-04-2012 |
20120249880 | METHOD AND APPARATUS FOR DETECTING CAMERA MOTION TYPE IN VIDEO - Embodiments disclose a method and apparatus for detecting a camera motion type in a video, the method including: estimating a first zoom motion parameter between adjacent frames in the video; estimating a second zoom motion parameter between frames having an interval of a preset number in a corresponding video segment when the first zoom motion parameter meets a first preset condition; and identifying the camera motion type of the video segment as slow zoom when the second zoom motion parameter meets a second preset condition. With the embodiments of the invention, the motion type of a camera in the video can be detected more effectively and accurately. | 10-04-2012 |
20120251010 | METHOD AND APPARATUS FOR ACQUIRING DESCRIPTIVE INFORMATION OF A PLURALITY OF IMAGES AND IMAGE MATCHING METHOD - The invention provides a method and apparatus for acquiring descriptive information of a plurality of images and an image matching method. The method for acquiring descriptive information of a plurality of images includes: performing a feature point detection with respect to each image of the plurality of images, so as to obtain a plurality of feature points of each image; acquiring 0-level descriptive information of the plurality of images; and the following steps are performed for each image: performing a division of the image for the (n−1)th time, so as to obtain a plurality of (n−1)-level sub-images of the image; and (n−1)-level descriptive information of the image is generated in accordance with a plurality of nth local feature descriptors for the image and a plurality of nth visual words, where n=2,3, . . . , K+1, and K is a positive integer. | 10-04-2012 |
20130230236 | IMAGE RETRIEVAL APPARATUS - Embodiments describe an image retrieval apparatus. The image retrieval apparatus includes an unlabelled image selector for selecting one or more unlabelled image(s) from an image database; and a main learner for training in each feedback round of the image retrieval, estimating relevance of images in the image database and a user's intention, and determining retrieval results, wherein the main learner makes use of the unlabelled image(s) selected by the unlabelled image selector in the estimation. In addition, the image retrieval apparatus may also include an active selector for selecting, in each feedback round and according to estimation results of the main learner, one or more unlabelled image(s) from the image database for the user to label. | 09-05-2013 |
20140368689 | IMAGE SIMILARITY DETERMINING DEVICE AND METHOD, AND AN IMAGE FEATURE ACQUIRING DEVICE AND METHOD - An image similarity determining device and method and an image feature acquiring device and method are provided. The image similarity determining device comprises a preprocessing unit for extracting feature points of each input image region of an input image and each image region to be matched of a data source image; a matched feature point set determining unit for determining one to one matched feature point pairs between input image regions and image regions to be matched to determine matched feature point sets; a geometry similarity determining unit for determining a geometry similarity between the input image region and the image region to be matched based on distribution of respective feature points in the matched feature point sets; and an image similarity determining unit for determining similarity between input image and data source image based on geometry similarities between input image regions and corresponding image regions to be matched. | 12-18-2014 |
20140379730 | MULTIMODALITY-BASED IMAGE TAGGING APPARATUS AND METHOD - Embodiments provide a multimodality-based image tagging apparatus and a method for the same. The image tagging apparatus includes: a score generating unit configured to generate, for an inquiry image, multiple groups of first scores about all tags in an tagging dictionary by using a training image and multiple modalities of an image; a late-fusion unit configured to fuse the obtained multiple groups of scores to obtain final scores about all the tags; and a tag selecting unit configured to select one or more tag(s) with relatively large tag scores as tag(s) of the inquiry image according to the final scores about all the tags. With the embodiments, multiple modalities may be effectively fused, and a more robust and accurate image tagging result may be obtained. | 12-25-2014 |