Fujitsu Corporation

Fijitsu Limited

Kenichiro Sakai

Tsugio Noda

Hirotaka Chiba

Nobuyasu Yamaguchi

Hiroyuki Takakura

Masayoshi Shimizu

Shoji Suzuki

Masahiro Mori

Genta Suzuki

Yoshiro Ishikawa

Hiroshi Takubo

Yasuko Onodera

Jun Moroo

Fumitaka Abe

Takayuki Iseyama

Shoji Yamaguchi

An image processing method according to the present invention is contrived to change the gradation level (of the color component corresponding to the complementary color of yellow) for a pixel within a zone located on a corner of a rectangular image so as to maximize the difference between the gradation level of a pixel that is a processing target and the gradation level of a pixel in a background area in the surrounding area of the pixel that is the processing target, that is, lowering the gradation level. This means the pixel that is a result of applying the process for changing the gradation levels looks yellowish. The human eye has difficulty in recognizing yellow and therefore the change applied to the pixel is inconspicuous as compared to the case of placing a mark or frame on the outside of a rectangular zone.

Image zone detecting using color gradation levels, method, apparatus and computer readable medium

When an input-output request for file management information is inputted to a file management information storage apparatus, the input-output request is accepted by a file management section. A fixed-length area management section then inputs and outputs basic management information for managing a file corresponding to the input-output request to and from a fixed-length area of a storage unit as fixed-length data. In addition, a variable-length area management section inputs and outputs extended management information for managing the file corresponding to the input-output request to and from a variable-length area of the storage unit as variable-length data.

File management information storage apparatus and method and program for controlling the same

First, the original data C is divided into an n number of pieces of partial data C-Cn. Then pieces of position information P-Pn are added to those pieces of divided partial data, and they are respectively embedded into the n number of duplicated images. Then, the resultant images E-En are produced. The resultant images are displayed in the same position on a display screen as a still image for Tseconds each. In a camera of a mobile phone, etc., the displayed images are repeatedly photographed at an interval of Tseconds that is shorter than Tseconds, and the pieces partial data C-Cn and position information P-Pn are sequentially extracted. When all the processes are completed, the pieces of partial data are integrated on the basis of the pieces of position information P-Pn. As a result, the original data is obtained.

Method, device, and program for embedding, displaying, and recognizing data

A method of obtaining information included in an image, the method includes dividing the image into a plurality of pairs of blocks. The image includes a plurality of codes. Each of the codes includes a plurality of digits. The method further includes determining a digit value of each of the block pairs on the basis of difference of a degree of characteristic value between adjacent blocks in each of the pairs. The method further includes weighing each digit value of each of the block pairs. The method further includes deciding a new digit value of associated pairs of blocks on the basis of the majority of the weighed digit values of the associated pairs of the blocks and repeating the deciding in other associated pairs of the blocks to determine the code.

Method, apparatus and computer-readable recording medium for obtaining information

According to an aspect of an embodiment, a method of embedding information into an image has obtaining an image data by taking the image by an image input device, dividing the image data into a plurality of blocks, determining an area in each of the blocks on the basis of a resolution power of the image input device, where a characteristic value may be modified in accordance with the information, respectively, comparing the size of the block with the size of the area and modifying a characteristic value of each of the blocks in accordance with the information to be embedded when the ratio of the size of the area with respect to the size of the blocks is smaller than a predetermined value.

Method of embedding informaton into image

A decoding device has data extracting units extracting data from an image, data occurrence frequency calculating units calculating an occurrence frequency of data on a digit-by-digit basis, weighting units setting a weight corresponding to the occurrence frequency for every reference code so that the data with a smaller occurrence frequency in the extracted data becomes a majority in a decision by a weighted majority, first decision-by-majority units deciding the detection result of the data on the basis of the decision by the weighted majority, and judging units judging whether the image is falsified or non-falsified in accordance with whether the detection code decided by the first decision-by-majority units, is correct or erroneous.

Decoding device, decoding method and decoding program

The information providing system according to the present invention comprises: a code transmission unit that can transmit an image acquired by reading the image that is printed on the print medium and in which the code is embedded, or can transmit the code extracted from the acquired image; an information providing unit that receives the acquired image, or the code extracted from the acquired image, and transmits information corresponding to the image or information used for acquiring the information corresponding to the image; an image receiving/acquiring unit that receives the information corresponding to the image, or receives the information used for acquiring the information corresponding to the image and can acquire the information corresponding to the image; and an information changing unit that can change the information corresponding to the image in the information providing unit.

Information providing system

Using an image region detection method according to the present invention, the detection of sides in the four directions (vertical and horizontal directions) is performed on the basis of results of edge detection performed on lines having a particular width, starting from an inner point toward the periphery of the quadrangular region in an input image, and the shape and the four corners of the quadrangle formed by the detected four sides are verified. Thereby, when there is a side that has been falsely detected, redetection on sides that are closer to the periphery than the side that has been detected falsely is performed, such that the quadrangular region can be formed at high speed.

Image region detection method, recording medium, and device therefor

A system includes a client that obtains a code included in an image, and sends out the code and identification information of the client, and a server that obtains content address information based on a frequency of access, the code and the identification information received from the client, from a table stored in the server provides the content address information to the client whereby the client is enabled to obtain content information by using the content address information.

System and method for accessing information while monitoring a frequency of access

An image compression apparatus is provided which includes an image dividing section that divides 3D image data into a plurality of units of data, 3D image data being composed of a plurality of frames, a pixel selection section that sequentially selects a pixel in one of the plurality of units as a target pixel in a predetermined order and selects pixels located within a predetermined range near the target pixel as reference pixels, a prediction error calculation section that calculates a prediction value of a target pixel value which is a pixel value of the target pixel, according to the pixel values of the reference pixels and calculates a prediction error which is a difference between the prediction value and the target pixel value, and an entropy coding section that performs entropy coding of the prediction error in each of the plurality of units.

Image compression apparatus, image compression program and image compression method

An image encoding apparatus includes an extracting unit and a replacing unit. An image is subjected to quantized orthogonal transformation and quantization, and quantized orthogonal transform coefficients are grouped and encoded group-wise. The extracting unit extracts, from among a group of quantized orthogonal transform coefficients, those quantized orthogonal transform coefficients that are within a designated range starting from boundary values of the next lower group. The replacing unit replaces values of the quantized orthogonal transform coefficients extracted, with values of the quantized orthogonal transform coefficients of the next lower group.

Image encoding apparatus

A method of providing an access to contents on a network includes sorting a first code for accessing the contents received from a contents requesting source to a pre-registered sorting destination based on a predetermined rule, and converting the first code, or a second code that is generated based on the first code, into information indicating a storage place of the contents.

Contents access method and sorting apparatus

To provide a technology of increasing coding efficiency for an isolated column which appears with a high frequency. Bit map data which indicates an image by an array of pixels of main scanning and subscanning directions is scanned in the main scanning direction, the data is separated into an area including a black pixel and an area including no black pixel by units of a predetermined number of logical lines based on a result of the main scanning, the area including the black pixel which has been separated in the first area separation step is scanned in the subscanning direction, the data is separated into a coded area coincident with a predetermined coded pattern and a noncoded area noncoincident with the coded pattern, an isolated column coincident with a predetermined isolated pattern is separated from the noncoded area separated, and the areas are coded by combining a code indicating the isolated column with a code indicating the number of columns of an area adjacent to the isolated column when the areas separated are coded as elements.

Image compression method

A controlling unit of an image inputting apparatus increments a counter each time an instruction to start an image input is externally provided. An image compressing unit waits for the completion of the storage of an entire image in a buffer memory, and issues an instruction to detect the state of the image to an image state detecting unit. The image state detecting unit detects the rotation direction and the presence/absence of mirror-reversing of the image stored in the buffer memory, and notifies the detection result to an image compressing unit. The image compressing unit switches a scanning order of pixels to be read from the buffer memory based on the notification, compresses the image data while reading the image data in the switched scanning order, and stores the compressed image data in a data storing unit. After the entire image data within the buffer memory is stored in the image data storing unit, the lastly stored image data is decompressed by an image decompressing unit, and the decompressed image is displayed on a display.

Image inputting apparatus, method, and storage medium recording image inputting program

An image data is inputted by using a device such as a document scanner. The input image data is scanned in a square block unit of M&#xd7;N pixels, and blocks that satisfy specific conditions is detected based on the scanning process. In one example, a ratio of white pixels and black pixels falls within scanned blocks is used as the specific condition to detect those blocks. Then a region that neighbored by the other blocks is detected, and is extracted as a two-dimensional code region.

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Kawasaki, Japan

Kenichiro Sakai