Patent application number | Description | Published |
20080247675 | IMAGE-PROCESSING APPARATUS AND IMAGE-PROCESSING METHOD - When retrieving an image from an archive of stored images that is similar to an inputted image, an image-processing apparatus ( | 10-09-2008 |
20080253660 | IMAGE PROCESSING APPARATUS AND METHOD FOR CONTROLLING THE SAME - A position and an area of a region to be processed, that is, a region from which image feature parameters are to be extracted, are obtained, and the number of pixels required for obtaining the usable image feature parameters is determined in accordance with types of the image feature parameters to be extracted. Then, a required resolution is calculated in accordance with the determined number of pixels and the area of the region to be processed, an image having a minimum resolution which is equal to or higher than the required resolution and which is usable to extract the usable image feature parameters is selected, and the image feature parameters are extracted from a region to be processed in the selected image. | 10-16-2008 |
20080285855 | IMAGE PROCESSING APPARATUS AND IMAGE RETRIEVAL METHOD - A plurality of feature points are extracted from an inputted image, and a feature amount is computed with regard to the feature point thus extracted. A prescribed plurality of alterations, i.e., a rotation, an enlargement, or a reduction, are applied to the inputted image, a plurality of altered feature amounts are estimated with regard to the feature point, and an image is retrieved from among stored images that are stored upon a storage apparatus and that is most similar to the inputted image, in accordance with the plurality of the estimated altered feature amounts. | 11-20-2008 |
20080304753 | IMAGE PROCESSING APPARATUS AND IMAGE RETRIEVAL METHOD - A image processing apparatus extracts a plurality of feature points, comprising a local feature amount, from an inputted image, and a region information that relates to the feature point, identifies at least one of the plurality of feature points, associates the feature point thus identified with a feature point with a high relational degree between the feature point thus identified and a region that is denoted by the region information of the feature point thus identified, and registers the feature point thus identified and associated as an index of the inputted image. | 12-11-2008 |
20090087101 | IMAGE PROCESSING APPARATUS AND APPARATUS FOR SEARCHING OPERATOR - An image processing apparatus includes an extraction unit configured to extract a feature amount from information recorded on a recording medium, an acquisition unit configured to acquire an identification image identifying an operator of the recording apparatus, a storage unit configured to store the feature amount and the identification image, wherein the identification image is associated with the feature amount, a search unit configured to compare a feature amount extracted from a predetermined medium by the extraction unit with the feature amount stored in the storage unit, wherein, based on a result of the comparison, the identification image associated with the stored feature amount is associated with the predetermined medium, and an output unit configured to output the identification image associated with the predetermined medium. | 04-02-2009 |
20090316228 | IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - A page image is acquired. Area information that includes information on existence or absence of a text area and a picture area is extracted from the acquired page image. The page image is divided into a plurality of blocks. An image feature amount of each of the divided blocks is calculated. Whether the page image includes a picture area is determined on the basis of the extracted area information and the calculated image feature amounts of the blocks. | 12-24-2009 |
20090324075 | Image processing apparatus, control method therefor, and program - The horizontal and vertical projection histograms of an image to be processed are calculated. The autocorrelation values of the calculated horizontal and vertical projection histograms are calculated, and horizontal and vertical object sizes until the autocorrelation values decrease to predetermined thresholds are calculated. The aspect ratio estimate value of the circumscribed rectangle of an object serving as a comparison region candidate in the image to be processed is calculated on the basis of the calculation results. The comparison region candidate is corrected on the basis of the aspect ratio estimate value, determining a final comparison region. | 12-31-2009 |
20100054593 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND PROGRAM - An image processing apparatus executes smoothing processing (reduction conversion) of an input image to acquire a smoothed image (reduced image), acquires a normalization parameter for normalization from the smoothed image, and normalizes pixel values of the input image based on the normalization parameter. | 03-04-2010 |
20100074530 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD AND PROGRAM - An image processing method performs reduction processing on an input image to acquire a reduced image, extracts a feature point from a group of images including the input image and one or more of the reduced images, determines as a matched feature point the feature point extracted from a matching position in each of two or more images in the group of images, calculates a local feature quantity of the matched feature point determined by the determination unit, and registers the calculated local feature quantity as a local feature quantity of the input image. | 03-25-2010 |
20100104197 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD AND PROGRAM - An image processing apparatus reduces two input images to be compared by the predetermined number of times to generate two image groups, extracts a plurality of feature points and a local feature amount of each feature point from these image groups, and determines a combination of feature points in which local feature amounts are similar to each other, between the image groups. Then, the image processing apparatus determines a relation of a reasonable combination, assigns high weights to the reasonable combination, and calculates a similarity degree between the two input images. | 04-29-2010 |
20100290708 | IMAGE RETRIEVAL APPARATUS, CONTROL METHOD FOR THE SAME, AND STORAGE MEDIUM - An image retrieval apparatus configured so as to enable a global feature method and a local feature method to complement each other is provided. After obtaining a retrieval result candidate using the local feature method, the image retrieval apparatus further verifies global features already registered in a database, with regard to the retrieval result candidate image. A verification position of the global features is estimated using the local features. | 11-18-2010 |
20100296736 | IMAGE SEARCH APPARATUS AND METHOD THEREOF - An image search apparatus, which determines a similarity between an input query image and a registered comparison destination image and searches an image similar to the query image, extracts a plurality of corresponding pairs of feature points in two images based on feature points selected from the both images. A coordinate transformation coefficient to execute a coordinate transformation process is decided so that coordinates of the feature point of one of the two images match coordinates of the feature point of the other image, in relation to each pair. Only if an amount of transformation of coordinates satisfies the constraint conditions designated in advance, the coordinate transformation process using the coordinate transformation coefficient is executed in relation to the plurality of pairs of feature points, and coordinates of the feature points after the transformation of one image are compared with coordinates of the corresponding feature points of the other image. | 11-25-2010 |
20100299355 | IMAGE SEARCH APPARATUS AND METHOD THEREOF - An image search apparatus extracts a symmetric partial image based on acquired pairs of feature points, and divides the partial image at a symmetry axis of the partial image to decide two partial areas, as a first area and a second area based on the tendency of image features in the partial image. In determining the similarity between the query image and a comparison destination image, a coordinate transformation coefficient for a coordinate transformation process is set based on pairs of feature points extracted from the partial area decided as the first area of the two images, the coordinate transformation process using the coordinate transformation coefficient is applied to the pairs of feature points extracted from areas including areas other than the first area of the two images, and coordinates of the pairs of feature points after the coordinate transformation process are compared. | 11-25-2010 |
20110058746 | IMAGE RETRIEVAL APPARATUS, IMAGE RETRIEVAL METHOD, AND STORAGE MEDIUM - An image retrieval apparatus includes a designation unit configured to designate a query area of an image based on a user's designation operation, a display unit configured to display an area where a local feature amount is difficult to be extracted in the query area designated by the designation unit as a feature non-extractable area, and a retrieval unit configured to retrieve, based on a local feature amount extracted from an area which is not displayed as the feature non-extractable area in the query area by the display unit, image feature data with which a local feature amount and the image are associated and which is stored in a storage device. | 03-10-2011 |
20110103697 | INFORMATION PROCESSING APPARATUS, CONTROL METHOD THEREFOR, AND PROGRAM - An information processing apparatus includes: a calculation unit adapted to analyze an image and calculate an intermediate value; a setting unit adapted to set a feature extraction region in the image, using the intermediate value; and an extraction unit adapted to extract a local feature of the feature extraction region, reusing the intermediate value used by the setting unit. | 05-05-2011 |
20110286670 | IMAGE PROCESSING APPARATUS, PROCESSING METHOD THEREFOR, AND NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM - An image processing apparatus extends the edge portion of an image in a prescribed range, detects, from the image, a plurality of feature points that each indicate a setting position of a local region, sets a local region corresponding to each of the feature points in the image on which region extension has been performed, and calculates a local feature amount corresponding to each feature point based on image information in the local region. | 11-24-2011 |
20130108176 | IMAGE PROCESSING APPARATUS AND CONTROL METHOD THEREFOR | 05-02-2013 |
20130251268 | IMAGE RETRIEVAL APPARATUS, IMAGE RETRIEVAL METHOD, AND STORAGE MEDIUM - An image retrieval apparatus includes a designation unit configured to designate a query area of an image based on a user's designation operation, a display unit configured to display an area where a local feature amount is difficult to be extracted in the query area designated by the designation unit as a feature non-extractable area, and a retrieval unit configured to retrieve, based on a local feature amount extracted from an area which is not displayed as the feature non-extractable area in the query area by the display unit, image feature data with which a local feature amount and the image are associated and which is stored in a storage device. | 09-26-2013 |
20140193077 | IMAGE RETRIEVAL APPARATUS, IMAGE RETRIEVAL METHOD, QUERY IMAGE PROVIDING APPARATUS, QUERY IMAGE PROVIDING METHOD, AND PROGRAM - An image retrieval apparatus generates an image feature list having a high and/or a low discrimination capability against other images based on the number of stored image features. Based on the image feature list, the image retrieval apparatus selects feature points extracted from a query image. | 07-10-2014 |
20140254940 | IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - For each of a plurality of second images other than a first image in an image group having a plurality of images, a feature point pair is generated by associating a second feature point of the second image with a first feature point of the first image based on a feature amount of the second feature point. A feature point pair is detected from the generated feature point pairs, where a position of the second feature point in the detected feature point pair is located within a predetermined region. A region including first feature points of the first image is extracted, where in the extracted region, detection counts of the feature point pairs exceed a predetermined threshold. | 09-11-2014 |