Fuji Xerox Co., Ltd.

Fujio Ihara

Taro Yokose

Kenji Ebitani

Hirofumi Komatsubara

Shunichi Kimura

Yutaka Koshi

Koh Kamizawa

Masanori Sekino

Ikken So

Katsuyuki Kouno

Kanya Ishizaka

Koumei Tomida

Katsuyki Kouno

An image processing apparatus detects boundaries from an image; extracts straight-line segments from the boundaries; detects a region where differences between pixel values of near pixels located across the segments are larger than, or at least a predetermined first value; classifies the segments in the region into four sides of quadrangles; detects colors or densities in outer areas of the four sides; selects combinations that differences between the colors or the densities corresponding to the segments in the combinations are no more than, or smaller than a predetermined second value, from the combinations of the four sides that possibly form the quadrangles; detects coordinates of four vertexes obtained when the segments in the combinations are extended, and a combination that an area of a quadrangle formed by the corresponding four coordinates satisfies a predetermined condition; and corrects the quadrangle formed by the combination to a rectangle.

Image processing apparatus, image processing method, and storage medium

An image processing apparatus includes an image acquisition unit that acquires a first image and a second image each of which includes a character string, an extraction unit that extracts feature points included in each of the first image and the second image, a setting unit that sets partial regions including characters which are continuously arranged in an arrangement direction of the character string in each of the first image and the second image, and a specification unit that compares positions of the feature points included in the partial regions set in the first image with positions of the feature points included in the partial regions set in the second image so as to specify the partial regions set in the second image corresponding to the partial regions set in the first image, and specifies corresponding points in each of the specified partial regions.

Image processing apparatus, image processing method, and non-transitory computer readable medium storing program

An information image includes a first, second, third, fourth and fifth pixel series which represent first, second, third, fourth and fifth information, respectively. The first and second information are successions of binary numbers 0 or 1. The first and third pixel series are series of pixel lumps arranged continuously as rows in a rectangle. The second and fourth pixel series are series of pixel lumps arranged continuously as columns in the rectangle. The row of the third pixel series is at a predetermined position with respect to that of the first pixel series. The column of the fourth pixel series is at a predetermined position with respect to that of the second pixel series. The fifth pixel series is a series of pixel lumps arranged in an area other than the rows and the columns of the first, second, third and fourth pixel series are arranged.

Computer-readable medium storing an information image and apparatus and computer-readable medium for generating and detecting an information image with five pixel series

An image processing apparatus includes an information converting unit and an output unit. The information converting unit converts information into an information expression image formed by a dot arrangement pattern in which information is expressed by arranging a given number or less of dots in a unit display area which is an information unit. The output unit arranges the converted information expression image. The output unit superimposes the converted information expression image on image information. The output unit outputs the superimposed information expression image. In the dot arrangement pattern, the arrangement of the dots is determined so that the number of the dots denoting 1 or 0 of a bit sequence of a given error correction code word is a subset equal to or smaller than the given number, and the dot arrangement pattern is readable by a machine.

Image processing apparatus and image processing program

An image processing apparatus includes: an image accepting unit that accepts an image; a pixel addition unit that specifies a reference pixel for reference based a demarcation, with each area of object within the image accepted by the image accepting unit or each sub-area into which the area is divided as the demarcation, and that adds a pixel at a position independent from a cluster of pixels within the image on the basis of the reference pixel; and an output unit that outputs the image to which the pixel is added by the pixel addition unit.

Image processing apparatus and computer readable medium

An image processing apparatus includes an image acquiring unit, a partial information detecting unit and an embedding unit. The image acquiring unit acquires an image in which first additional information is embedded so that pieces of first partial information obtained by dividing the first additional information are coded and embedded in respective unit areas obtained by dividing the image. The partial information detecting unit detects the pieces of first partial information, which are embedded in the respective unit areas of the image acquired by the image acquiring unit. The embedding unit codes and embeds, in the respective unit areas, pieces of second partial information obtained by dividing second additional information which is different from the first additional information so that a sum of differences between corresponding pairs of (i) the pieces of detected first partial information and (ii) the newly embedded pieces of second partial information become minimum.

Image processing apparatus, image processing method and non-transitory computer-readable medium

An image processing apparatus includes: a recognition unit that recognizes a layout of a line including a character string in an image read from an original; a determination unit that determines a size of a region in which additional information is embedded so as to include at least a part of a line including a character string in the region, based on the layout recognized by the recognition unit; a dividing unit that divides the image read from the original based on the size of the region determined by the determination unit; and an embedding unit that embeds the additional information in the image divided by the dividing unit.

Image processing apparatus, image processing system and computer readable medium storing program

An image processing apparatus includes an arrangement unit and a restriction unit. The arrangement unit puts images representing codes of an object code string in areas of an object image. The areas correspond to positions of the codes in the object code string. If a first code string and a second code string associated with the first code string are present in the object code string in a certain positional relationship and if satisfied is a condition regarding whether or not codes of the first code string are decodable by a decoder from an image obtained by putting the code images representing the codes of the first code string, which is present in the object code string, the restriction unit restricts the arrangement unit from putting images representing respective codes of the second code string, which is present in the object code string, in the object image.

Apparatus and method of suppressing deterioration of document having encoded data

There is provided a printing system including a reading unit that reads paper identification information of a paper sheet, a first controller that implements control for, when instructed to print document data, causing the reading unit to read the paper identification information of the paper sheet used for printing and transmitting a request for a document containing the read paper identification information, and a second controller that implements control for, when printing document data containing the paper identification information received in response to the request for the document on the paper sheet, causing the reading unit to read the paper identification information of the paper sheet used for printing and, if the read paper identification information and the received paper identification information contained in the document data do not match, inhibiting printing of the document data.

Printing system and method for securely producing self-authenticating documents

A watermarked image generation apparatus embeds target data in an original image to generate a watermarked image. The watermarked image generation apparatus includes a target-data embedding unit and a marker-image embedding unit. The target-data embedding unit embeds the target data in respective plural embedding areas contained in the original image, to generate a watermarked image. The marker-image embedding unit embeds in the watermarked image a plurality of marker images used for identifying the plurality of embedding areas.

Watermarked image generation apparatus, watermarked image analysis apparatus, watermarked image generation method, medium and computer readable medium

An image processing apparatus includes an image capturing section, a marker-image defecting section, a judging section and an output section. The image capturing section captures at least a part of a target image, which includes a plurality of marker images and a recognition target range defined by the plurality of marker images, to acquire a captured image. The marker-image detecting section detects the marker images from the captured image. The judging section judges based on a detection result, whether or not the recognition target range is included in the captured image. When the judging section judges that the recognition target range is not included in the captured image, the output section outputs guidance for capturing the recognition target range.

Image processing apparatus, image processing method, and program

An image processing apparatus includes an information acquiring portion that acquires information on image process conditions for processing image data, a creating portion that creates additional image data, serving as a watermark image, with additional information to be embedded into the image data on the basis of the information on the image process conditions acquired, and a merging portion that merges the image data with the additional image data to create composite image data.

Image processing apparatus and method

A pattern generating section forms two patterns based on a pattern size, an embedding strength, and a pattern attenuation ratio. When corresponding pixels in two patterns are added to each other, all of elements become zero. When all of pixels in each of patterns are added to each other, the added pixels become zero. Each of patterns has two edges, which include discontinuous pixel values and pass through a center portion of each of patterns in difference directions from each other. Absolute values of pixel values of the patterns are the largest at a center thereof. The absolute values of pixel values of the patterns decrease as being away from the center thereof. A pattern selecting section selects one of the two patterns in response to additional information. A pattern superimposing section superimposes the additional information on the image data to embed it into the image data.

Image processing apparatus, image processing method, and storage medium of image processing program

The present invention presents an image processing apparatus that performs rotation, enlargement, reduction, clipping or overlapping processing of images at high speed using low capacity memories instead of page memories and without the need to read image data in repetition. A first band data storing element receives input image data line by line and stores it as local data. The local data stored in the first band data storing element is transformed by local data transforming element and then stored in a transformed data storing element. The local data is then read in the order it is to be output and stored in a second band data storing element. An image output element then outputs the local data as an output image.

Geometrical image processing apparatus and method of transforming parts of a divided image

An index signal and a delta signal are generated from an input pixel value, and then, inputted to an input buffer by every predetermined pixel to be processed. A controlling unit compares the index signal in the input buffer with a tag (index signal) in a coefficient cache. When they coinside with each other, the controlling unit reads out the corresponding coefficient from the coefficient cache and supplies the same to an interpolating unit. The interpolating unit simultaneously receives the delta signal and supplies the keeping color data to an output buffer. Thereafter, the interpolating unit accesses to the coefficient storing memory by using an index signal that does not coinside with either one of cache-tag (index signal) to obtain a coefficient, and similarly, interpolatively generates color data. Data of converted color is outputted from the output buffer in the order of inputting the pixel. A color converting device of the present invention can perform a color conversion with high precision without increasing a reading-out band of a coefficient table for a color conversion.

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Kanagawa, Japan

Fujio Ihara