Abstract: Method and system for detecting a correction pattern in a QR code are disclosed. In the detection of a correction pattern, coordinates of the correction pattern is at first roughly estimated according to the detected coordinates of the detection patterns and different QR code versions, then a square region is specified around the coordinates of the correction pattern, in which a search is performed repeatedly. Finally, in conjunction with the characteristic of the correction pattern itself, i.e., having a line segment meeting a predetermined ratio, the correction pattern may be accurately located in the predetermined area, without the need of searching patterns meeting a 1:1:1 ratio line by line in the entire QR code image.

Abstract: Method and system for determining QR code binary image is provided. Locating lines on which edges of the QR code locate are determined according to location information of locating points within the QR code image and distances between the locating points to edges of the QR code. Distances may be used to obtain locating lines on which edges of the QR code locate, with relatively smaller errors. When a QR code image is distorted, it generally bulges outward. The position of a determined locating line is within the interior of the QR code image, and an actual edge of the QR code partly overlaps with the locating line and partly locate on external side of locating line. Edge points on external side of a locating line are detected along the direction of the locating line and then are connected to form an edge line of QR code.

Abstract: Embodiments of the present invention provide a layout analysis method, comprising: extraction, collection of basic elements with respect to static area objects, analysis sequence determination and logical paragraph analysis, wherein the logical paragraph analysis comprises character analyzing, logical connection edge generating, line forming analyzing, paragraph forming analyzing, paragraph result filtering, basic elements collecting with respect to the dynamic area objects and basic element removing. According to the embodiments of the present invention, logical reference information and basic element data information are combined, and the logical reference information is fully used during layout analysis, such that a more accurate layout analysis result with respect to a fixed-layout document is acquired, and the layout analysis result is effectively improved.

Abstract: Binarization method and system for two dimensional code images is provided. Each block region has a different grayscale threshold. Thus, for each block region, whether a pixel in the block region is determined as black or white restoring process is not solely based on the grayscale value of the pixel itself, but also an average grayscale value of a predetermined area specified for a block region where the pixel locates. That is to say, when the predetermined area in which the block region locates has generally a larger grayscale value, the grayscale threshold corresponding to the block region may become larger, and vice versa. Because the grayscale threshold of a block region is closely related to grayscale values in a background of this block region, external circumstance interference may be prevented from an obtained binary result, producing a clear binary image accordingly.

Abstract: Method and system for detecting detection patterns of a QR code is disclosed, detection is performed in a first direction and then in a second direction based on the first direction detection to detect a line segment having a length ratio of black:white:black:white:black meeting a predetermined ratio to determine the central points of the detection patterns, and thereby find out all detection patterns. Line-by-line traversal detection in a first direction is used to detect the detection patterns. Detection is performed based on the detected central point of the first line segment. Thus, detection steps may be greatly saved to simplify the detection procedure and improve computing speed. Fast detection of detection patterns may be realized for a QR code image.

Abstract: Provided is a table recognizing method, comprising: parsing and analyzing metadata information in an original fixed-layout document, and extracting basic elements on a page of the document; segmenting the basic elements, extracting segmented text lines on the page, and acquiring fragments; constructing an undirected graph with respect to each of the fragments; extracting an image on the page, detecting intersection points of horizontal lines and vertical lines, detecting an external bounding box of the intersection points, and taking whether the segmented text lines fall within the external bounding box as local relationship features; training a learning model according to the local relationship features, local features of the fragments, and neighborhood relationship features among the fragments, acquiring model parameters, and establishing a table recognizing model; and invoking the table recognizing model to perform table recognizing for the document, and acquiring a recognizing result.

Abstract: Method and system for correcting a QR code image is provided. An initial coordination system and a correction coordination system are determined at first. Conversion coefficients are obtained according to the coordinates of the central point of each detection pattern, the coordinates of the locating point in the initial coordinate system, the correction coordinate system. For each point in the correction coordinate system, its corresponding module in the initial coordinate system is found out, and the grayscale value of that module is assigned to the point to realize the correction of the QR code image. Coordinates of the three detection patterns, the locating point in the initial coordination system, and the correction coordinate system may be readily obtained according to different version numbers. At the same time, shortcomings caused by edge detection may be avoided, and a favorable correction effect may be obtained.

Abstract: A method and system for filtering detection patterns in a QR code is provided in this invention. When multiple detection patterns get into a QR code image due to interference or other reasons, first of all, an side length is determined for each pattern to be detected, and then an average value of the side lengths of multiple patterns to be detected is determined, after which through comparing with a predetermined reference value, patterns to be detected meeting a predetermined condition are determined as detection patterns. An effective solution is provided to fill the gap in the prior art of unable to remove detection patterns caused by interference appropriately when more than three detection patterns are found.

Abstract: A list recognizing method and system, which comprises: parsing and analyzing metadata information within an original fixed-layout document, and extracting basic elements within a page; segmenting the basic elements, extracting segmented text lines within the page to obtain fragments; building an undirected graph with respect to the fragments; detecting indent features of a bullet according to features of the basic elements; training a learning model according to the indent features, local features of the fragments and neighborhood relation features among the fragments, obtaining model parameters, and establishing a list recognizing model; and invoking the list recognizing model to perform list recognizing on the required document, so as to get recognition result.

Abstract: Method and system for decoding a two dimensional code is disclosed. In the binarization process of a two dimensional code image, through performing a dividing operation on the two dimensional code image, each block region has a different grayscale threshold. For each block region, whether a pixel in the block region is determined as black or white is not solely based on the grayscale value of the pixel itself, but also an average grayscale value of a predetermined area set for the block region where the pixel locates. When the predetermined area in which the block region locates has a larger grayscale value as a whole, the grayscale threshold corresponding to the block region may become larger, and vice versa.

Abstract: The embodiments of the present invention provide a method and a system for interaction between a paper media and a reader. A 2D barcode scanning means (1) scans an image of a 2D barcode in the paper media; a 2D barcode identification means (2) identifies a data structure of the image of the 2D barcode and displays items to be fed back by the reader on a terminal; an identification feedback means (3) transmits the feedback from the reader to a feedback response means (4); and the feedback response means (4), after receiving the feedback from the reader, displays the feedback and responds to it by the paper media. According to the embodiments of the present invention, it is able to relieve an increasing impact of a new media such as Internet, mobile Internet and tablet PC on the paper media, and to inspire the reader to interact with the paper media, thereby to provide convenient and efficient interaction and communication between the paper media and the reader and to enhance intimacy therebetween.

Abstract: A method for processing data of a scanned book having a plurality of pages is disclosed. The method includes obtaining page image data from a page. The method further includes segmenting and recognizing the page image data to obtain locations of rectangular boxes corresponding to the respective characters and text codes for the respective characters. The method also includes obtaining respective aggregated character line information for each line of characters. The method further includes adjusting the rectangular boxes in accordance with the obtained aggregated character line information.

Abstract: An amplitude modulation screening method is provided. The method comprises a step of utilizing regular hexagon screen dots to form a threshold matrix for amplitude screening. In embodiments of the present application, an amplitude modulation screening apparatus is also provided. The apparatus may comprise a matrix module configured to constitute a threshold matrix for amplitude screening using regular hexagon screen dots. Due to the threshold matrix formed with regular hexagon screen dots, the method and apparatus of the present application resolve the problem of the screen dots in the prior art, and improve the printing quality.

Abstract: Techniques, devices and systems for publishing digital contents such as encyclopedia are provided. One method for such digital publishing includes obtaining entries of encyclopedic resource files; indexing attributes of each of the entries by using preset indexing rules; reorganizing the entries based on the attributes; and publishing the reorganized entries by applying a preset template.

Abstract: The present invention provides a server, a terminal and a data pushing method. The server comprises a request receiving unit configured to receive request information from at least one terminal and a pushing instruction from another server; a request generating unit configured to parsing the pushing instruction so as to obtain information of data associated with the terminal and generate a pushing request according to the information of the data associated with the terminal; and a request transmitting unit configured to transmit the pushing request to the terminal and transmit the request information to the other server, so that the other server determines the information of the data and generates the pushing instruction according to the request information.

Abstract: The present invention provides a DRM method and system for supporting offline sharing of digital resources. When a client applies for joining in a domain, the client sends its own device information to a server, and obtains feature data of the domain by receiving a sharing certificate sent by the server. Wherein, the sharing certificate is created by encrypting the feature data of the domain by using the equipment information of the client as a cipher. The client decrypts the sharing certificate by using its own equipment information to obtain the feature data. Since the feature data has already been obtained in the procedure of applying for joining the domain, a client is able to use the digital resources by using the feature data even if the client cannot connect to network, thus, an advantage of supporting offline sharing of digital resources is achieved.

Abstract: The present application provides a terminal, a server and a digital content authorization method. The terminal comprises: an extracting unit, configured to extract identification information of the terminal when the terminal requests an authorization for a designated layer of content of digital contents from a server; a transceiver unit, configured to transmit the identification information of the terminal to the server and receive an authorization certificate and the designated layer of content of the digital contents from the server; and a decryption unit, configured to decrypt the designated layer of content of the digital contents based on the identification information and the authorization certificate. Embodiments of the present invention may support the copyright protection by using layered encryption technique. The digital content cannot be read only by copying so as to enhance the protection of the digital contents.

Abstract: The present invention provides a character conversion system, comprising: a parsing unit, used to parse received data, determine at least one character contained in the data, and obtain property information corresponding to each character of the at least one character; a judging unit, used to, with respect to each character, determine a pattern bitmap of the character according to the property information, and judge whether the pattern bitmap satisfies a preset condition; a conversion unit, used to, if the judging unit judges that the preset condition is satisfied, determine an original inner code of the character according to the property information, and convert the character according to the original inner code; and if the judging unit judges that the preset condition is not satisfied, identify an actual inner code of the character according to the pattern bitmap, and convert the character according to the actual inner code.

Abstract: The present invention provides a server comprising: a selection unit configured to select a target content from each digital file among a plurality of digital files according to a selection instruction received from a terminal; an extraction unit configured to extract privilege information corresponding to the target content from file key information corresponding to each digital file among the plurality of digital files, so as to obtain a plurality of privilege information; an authorization information generation unit configured to generate authorization information according to the plurality of the privilege information; and a processing unit configured to, when an authorization request is received from the terminal, transmit the authorization information to the terminal so that the terminal performs predetermined operations on the target content according to the authorization information. The present invention further provides a terminal and a digital copyright management method.

Abstract: Disclosed is a method and system for document printing management and control and source tracking. A printing management service program runs at a server end. A printing monitoring service program runs at a client end. The printing management service program saves client end information, monitors and manages a client end computer, sets a printing management policy, and delivers operation instructions to the client end. The printing monitoring service program collects the client end information, sends the client end information to the server end, and executes the operation instruction.