Patent application number | Description | Published |
20080226171 | Correcting device and method for perspective transformed document images - This invention provides a correcting device and a correcting method for perspective transformation of document images. The correcting device comprises a horizontal vanishing point determining unit, for detecting a horizontal vanishing point of the perspective transformed document image; a vertical vanishing point determining unit, for detecting a vertical vanishing point of the perspective transformed document image; and a perspective transformation correcting and converting unit, for correcting the perspective transformed document image; wherein the horizontal vanishing point determining unit comprises a direct horizontal line segment detecting unit, an indirect horizontal line segment detecting unit and a horizontal vanishing point detecting unit, and wherein the horizontal vanishing point detecting unit detects a horizontal vanishing point in accordance with a direct horizontal line segment detected by the direct horizontal line segment detecting unit and an indirect horizontal line segment detected by the indirect horizontal line segment detecting unit. | 09-18-2008 |
20100220930 | VIDEO TEXT PROCESSING APPARATUS - Video frames that contain text areas are selected from given video frames by removing redundant frames and non-text frames, the text areas in the selected frames are located by removing false strokes, and text lines in the text areas are extracted and binarized. | 09-02-2010 |
20120045129 | Document image processing method and apparatus - A method for processing a document image includes: performing horizontal and vertical text line extraction on the document image; providing an overlapping matrix, a value of an element of the overlapping matrix indicating an overlapping relation between horizontal and vertical text lines; merging the overlapping matrix in the vertical and horizontal direction; determining one or more text overlapping regions in the document image, based on the values of the elements of the merged overlapping matrix; counting the total number of strokes or pixel points in the horizontal and vertical text lines, respectively, within one of the one or more text overlapping regions; and determining an orientation of the text overlapping region is horizontal if the total number of strokes or pixel points in the horizontal text lines is larger than that in the vertical text lines, otherwise, determining the orientation is vertical. | 02-23-2012 |
20120045131 | Method of and apparatus for processing images - Ruled lines are extracted and fitted into a real 2-D space. Correspondence between fitted cells and template cells of a ruled line template is determined. For each pair of cells corresponding to each other, the position of each pixel in the template cell is mapped into a real position in the real 2-D space based on an affine transformation between the cells. A pixel value based on pixel values of a plurality of pixels in the image with positions adjacent to the real position is generated as a pixel value of the pixel in the template cell corresponding to the real position. A synthesized image corresponding to the image is generated by merging the ruled lines of the ruled line template with the pixels in the template cells having the pixel values as generated. A form template is obtained based on the synthesized images corresponding to the plurality of images. | 02-23-2012 |
20120063687 | METHOD AND APPARATUS FOR PROCESSING AN IMAGE COMPRISING CHARACTERS - Method and apparatus for processing an image including a character are disclosed. The method may include: searching in a set of characters one or more characters having highest similarities of shape to a character in the set of characters, hereinafter the character being referred to as a first character, the one or more searched characters forming a similar character list of the first character; searching in the set of characters one or more characters having highest similarities of shape to each character in the similar character list of the first character, to form a similar character list of each character in the similar character list of the first character; and selecting in the similar character lists one or more characters having a high mutual similarity between each other, as a character cluster. | 03-15-2012 |
20120163708 | APPARATUS FOR AND METHOD OF GENERATING CLASSIFIER FOR DETECTING SPECIFIC OBJECT IN IMAGE - There provides an apparatus for and a method of generating a classifier for detecting a specific object in an image. The apparatus for generating a classifier for detecting a specific object in an image includes: a region dividing section for dividing, from a sample image, at least one square region having a side length equal to or shorter than the length of shorter side of the sample image; a feature extracting section for extracting an image feature from at least a part of the square regions divided by the region dividing section; and a training section for performing training based on the extracted image feature to generate a classifier. By using the apparatus for and method of generating the classifier, it becomes possible to make full use of recognizable regions of objects to be recognized with variable aspect ratios and improve speed and accuracy for recognizing in complex backgrounds. | 06-28-2012 |
20120288203 | METHOD AND DEVICE FOR ACQUIRING KEYWORDS - Locating text areas in an image and recognizing text contents in the text areas through optical character recognition, OCR; selecting a first class of pending keywords from the recognized text contents to search for webpages; extracting a second class of pending keywords from the retrieved webpages; and determining one or more keywords corresponding to the image from at least the second class of pending keywords. With the embodiment, both OCR and webpage searching can be combined so that the webpages can be retrieved based upon the first class of pending keywords recognized and selected through OCR to ensure convergence of the keywords and then the second class of pending keywords can be selected from the retrieved webpages to ensure correctness of the keywords. | 11-15-2012 |
20120320427 | IMAGE PROCESSING METHOD, IMAGE PROCESSING DEVICE AND SCANNER - An image processing method generally includes: obtaining a vanishing point on a curved surface in a two-dimension image; extracting all the straight line segments between a top contour line and a bottom contour line of the curved surface by the vanishing point; removing a perspective distortion to get parallel straight line segments; obtaining the lengths of the straight line segments, obtaining the true width of each of the straight line segments in a three-dimension space and the depth increment of the straight line segments according to the lengths; obtaining the expanded width of each straight line segment according to the true width and the depth increment; obtaining the total expanded width of the curved surface to transform it into a flat surface; transforming image contents on the curved surface onto the flat surface. | 12-20-2012 |
20120320433 | IMAGE PROCESSING METHOD, IMAGE PROCESSING DEVICE AND SCANNER - The image processing method includes: determining an edge map of a foreground object in an image; obtaining candidates for a boundary line from the edge map and determining the boundary line among the candidates for the boundary line, the boundary line defining the boundary of a specific object in the foreground object; and removing the foreground object beyond the boundary line other than the specific object. This method can be applied to removing an image of another object, e.g., hands, etc., in a captured image beyond the boundary of a specific object. With the image processing method according to the embodiments, the boundary of the specific object in the image can be determined accurately to thereby remove another object beyond the boundary and facilitate subsequent other image processing. | 12-20-2012 |
20120321198 | IMAGE PROCESSING METHOD AND IMAGE PROCESSING APPARATUS - An image processing method includes estimating corners of a contour of an object area in an obtained image, searching for contour lines of the object area between every two points which are offset from the estimated corners within a predetermined degree or distance along a direction away from the object area respectively, and determining intersection points of the contour lines as final corners of the contour of the object area, and determining contour lines between the final corners as a final contour of the object area. | 12-20-2012 |
20130004077 | METHOD OF AND DEVICE FOR IDENTIFYING DIRECTION OF CHARACTERS IN IMAGE BLOCK - The present embodiments disclose a method of and device for identifying the direction of characters in an image block. The method includes: performing optical character recognition processing on the image block by assuming various directions as assumed character directions to obtain sub image blocks, recognized characters corresponding to the sub image blocks and correctness measures thereof in each assumed character directions; in sub image blocks in the assumed character directions with | 01-03-2013 |
20130022271 | METHOD OF AND DEVICE FOR IDENTIFYING DIRECTION OF CHARACTERS IN IMAGE BLOCK - The embodiments disclose a method of and a device for identifying direction of characters in image block. The method includes: performing optical character recognition processing on the image block by assuming various directions as assumed character directions to obtain sub image blocks, recognized characters and correctness measures in each assumed direction; in sub image blocks in the assumed directions with a 180° mutual relation, searching for a minimum matching pair; when there is one sub image block in each assumed direction in a minimum matching pair and recognized characters belonging to the minimum matching pair are the same rotation invariant character or belong to the same rotation invariant character pair, adjusting their correctness measures to the same; calculating an accumulative correctness measure in each assumed direction based on the adjusted results; and identifying the direction of the characters in the image block according to the accumulative correctness measures. | 01-24-2013 |
20130022272 | METHOD OF AND DEVICE FOR IDENTIFYING DIRECTION OF CHARACTERS IN IMAGE BLOCK - The present embodiments disclose a method of and a device for identifying the direction of characters in an image block. The method includes: performing optical character recognition processing on the image block by assuming various directions as assumed character directions, respectively, to obtain sub image blocks, recognized characters corresponding to the sub image blocks and correctness measures thereof in each of the assumed character directions; determining a language group to which the characters in the image block belong; adjusting a correctness measure corresponding to a sub image block which corresponds to a recognized character not belonging to the determined language group in each of the assumed character directions; calculating an accumulative correctness measure in each of the assumed character directions based on the adjusted correctness measure; and identifying the direction of the characters in the image block according to the accumulative correctness measures. | 01-24-2013 |
20130027419 | IMAGE PROCESSING DEVICE AND METHOD - An image processing device including: a local mean image generating section; a binarization image generating section configured to generate a binarization image, wherein pixels corresponding to high frequency regions and low frequency regions have a first and second grey scales, respectively; a ternarization image generating section configured to divide, based on comparison between the image and the local mean image, first grey scale regions in the binarization image into regions having the first grey scale and regions having a third grey scale; a filling section configured to recognize connected regions having the second grey scale in the ternarization image, to fill the connected regions with the first grey scale or with the third grey scale according to grey scale of pixels at boundaries of the connected regions; and a recognizing section configured to recognize strokes according to consistency of grey scale at object boundaries in the filled ternarization image. | 01-31-2013 |
20130182969 | METHOD AND APPARATUS FOR CORRECTING CORNER POINT OF IMAGE AND IMAGE PROCESSING DEVICE - The present invention discloses a method and apparatus for correcting a corner point of an image and an image processing device. The method includes: determining first candidate corner points of an initial corner point in a first local region; obtaining information related to the image in a second local region; selecting, among the first candidate corner points of the initial corner point, the first candidate corner points meeting a predetermined condition, as second candidate corner points of the initial corner point according to the information; and correcting the initial corner point using the second candidate corner points of the initial corner point. The apparatus is configured to perform the processes of the method. The image processing device includes the apparatus for correcting a corner point of an image. With the technology, a roughly detected corner point can be corrected. | 07-18-2013 |
20130211874 | System and Method for Mass Production and Sale of Configurable and Personalized Tablet Computers - A method to mass produce and sell electronic devices using open architecture manufacturing model and group-buying business model is provided. A group-buying company receives a plurality of offers to buy electronic devices from a plurality of consumers, and each offer is associated with a minimum requirement for each corresponding electronic device. The group-buying company determines one or more final device configurations of a plurality of electronic devices that satisfies the minimum requirements of all the offers, and all the electronic devices are substantially identical to be sold to the plurality of consumers as a group-buying deal. The group-buying company then arranges a single run of the identical electronic devices to be mass produced by a third entity. Finally, the group-buying company supplies the identical electronic devices to each of the plurality of consumers. | 08-15-2013 |
20130259385 | IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD AND APPARATUS - The present invention provides an image processing device, an image processing method and an apparatus so as to improve at least the precision of extracting document corners in image processing performed on an image captured for a document. The image processing device includes: an extracting unit for extracting boundaries of a document in a first direction and roughly-detected document corners, where the first direction is a horizontal direction or a vertical direction of the document image; a determining unit for determining candidate page corners on the boundaries in the first direction around the roughly-detected document corners; and a selecting unit for determining document corners of the document among the candidate page corners. With the foregoing technology of the invention, more precise document corners can be extracted, a better effect of image processing can be obtained, and applications in the field of image processing are possible. | 10-03-2013 |
20130272602 | METHOD AND APPARATUS FOR PROCESSING SCANNED IMAGE - The present invention relates to a method and apparatus for processing a scanned image. The method for processing a scanned image comprises: a shaded region extracting step of extracting a region, which is shaded by a shading object and lies in a margin in the vicinity of an edge of the scanned image, as a shaded region; and a pixel value repairing step of repairing values of pixels, which lie both in a line segment and the shaded region, by using a linear model according to known values of pixels, which lie both in the line segment and the margin, the line segment passing through the shaded region and being parallel to the edge. | 10-17-2013 |
20130294696 | IMAGE PROCESSING METHOD AND APPARATUS - An image processing method and apparatus is provided. The image processing method includes steps of: generating a first scale binary image from an image, wherein the first scale is smaller than the original scale of the image; detecting at least one text line in the image based on the first scale binary image; generating a second scale binary image from the image, wherein the second scale is larger than the first scale; for each text line, calculating a similarity between corresponding sections in the first scale binary image and the second scale binary image, and removing the text line for which the similarity is lower than a predetermined level; for one or more of the remaining text line(s), performing OCR on corresponding section(s) in the second scale binary image to determine character orientation(s) of corresponding text line(s); and determining the orientation of the image according to the determined character orientation(s). | 11-07-2013 |
20130322757 | Document Processing Apparatus, Document Processing Method and Scanner - The disclosure provides a document processing apparatus, method and a scanner. The document processing apparatus includes: a text line extraction unit extracting a text line from an input document; a language classification unit determining whether an OCR process is necessary for a language of the input document; an OCR unit determining, by performing the OCR process, an OCR confidence in the case that it is determined that the OCR process is necessary; an graphic feature recognition unit determining an graphic feature recognition confidence; and a determination unit determining a combination confidence based on at least one of the determined graphic feature recognition confidences and the determined OCR confidences, and determining an orientation of the input document based on the combination confidences. This technical solution can determine better an orientation of the document, and is especially applicable when the quality of the image of the document is deteriorated. | 12-05-2013 |
20130322768 | BOUNDARY EXTRACTION METHOD AND APPARATUS - The present invention discloses a boundary extraction method and apparatus, the method including: a gradient estimation step of estimating a gradient of each pixel in a captured image; a gradient adjustment step of adjusting, by enhancing a gradient of a target boundary of an object contained in the captured image and weakening a gradient of a noise boundary, the estimated gradient, so that the adjusted gradient is considered as a current gradient; and a boundary extraction step of extracting a boundary of the object based on the current gradient. According to the embodiments of the invention, in a case of using a non-contact imaging device to capture an image, it is possible to more accurately extract a boundary of an object contained in the captured image. | 12-05-2013 |
20130322769 | Image Processing Device, Image Processing Method, Scanner and Storage Medium - The disclosure provides an image processing device, image processing method, scanner and storage medium. The image processing device is used for tracing a boundary of an object image in an image, the boundary being continuous and the rate of change in slope between adjacent points on the boundary being slow. The image processing device includes: a boundary estimation unit, adapted to estimate the location of the boundary of the object image; an interfering gradient processing unit, adapted to process an interfering gradient near the estimated boundary, so as to reduce the interfering gradient or remove the interfering gradient from the image; and a boundary tracing unit, adapted to trace the boundary in the image having the interfering gradient processed. By using the technique of the disclosure, the accuracy of tracing a boundary of an image is improved significantly. | 12-05-2013 |
20140161176 | Method and Device for Controlling Video Quality Fluctuation Based on Scalable Video Coding - Disclosed are a method and an apparatus for controlling video quality fluctuation based on scalable video coding. The method includes: performing scalable video coding on video data to be transmitted to generate a base layer and at least one enhancement layer; sending the video data after the scalable video coding to a terminal device; determining a currently expected bit rate according to a transmission status of the video data on a currently used channel, the currently expected bit rate being the maximum data transmission bit rate that the predicted currently used channel can sustain; acquiring the currently highest enhancement layer according to the currently expected bit rate, the sum of all bit rates occupied when transmitting video data under the currently highest enhancement layer being no larger than the currently expected bit rate; and sending the video data under the currently highest enhancement layer to the terminal device. | 06-12-2014 |
20150036920 | CONVOLUTIONAL-NEURAL-NETWORK-BASED CLASSIFIER AND CLASSIFYING METHOD AND TRAINING METHODS FOR THE SAME - The present invention relates to a convolutional-neural-network-based classifier, a classifying method by using a convolutional-neural-network-based classifier and a method for training the convolutional-neural-network-based classifier. The convolutional-neural-network-based classifier comprises: a plurality of feature map layers, at least one feature map in at least one of the plurality of feature map layers being divided into a plurality of regions; and a plurality of convolutional templates corresponding to the plurality of regions respectively, each of the convolutional templates being used for obtaining a response value of a neuron in the corresponding region. | 02-05-2015 |