Abstract: An encoding device includes a binary image generation unit that generates at least two binary images from a multivalued image by applying different methods, a check image generation unit that generates a check image based on the plural binary images generated by the binary image generation unit, and a code generation unit that generates coded data by encoding at least one of the binary images generated by the binary image generation unit and the check image generated by the check image generation unit by using different methods.

Abstract: A translated document image production device has an extraction section, a translation section and a region backfill section. The extraction section extracts a group of pixels to be processed, the group of pixels having pixels for constituting a character or a character string. The translation section translates the character or character string. The region backfill section backfills the extracted group of pixels to maintain the background of the translated character or character string and that writes the translated character and character string.

Abstract: An encoding device includes a binary image generation unit that generates at least two binary images from a multivalued image by applying different methods, a check image generation unit that generates a check image based on the plural binary images generated by the binary image generation unit, and a code generation unit that generates coded data by encoding at least one of the binary images generated by the binary image generation unit and the check image generated by the check image generation unit by using different methods.

Abstract: An encoding device has a shape encoding unit and a pattern encoding unit. The shape encoding unit encodes a shape of an image element. The pattern encoding unit encodes a binary pattern of the image element and the shape of the image element is related to the binary pattern of the image element.

Abstract: An image processing apparatus includes an image extracting unit, a vector information generating unit and a color information adding unit. The image extracting unit extracts an image to be vectorized from a multilevel image as a binary image. The vector information generating unit vectorizes the binary image extracted by the image extracting unit to generate vector information. The color information adding unit adds color information to the vector information generated by the vector information generating unit.

Abstract: An image processing apparatus includes an extracting unit, a representative-image generating unit and a vector converting unit. The extracting unit extracts pixel blocks from image data. The representative-image generating unit generates representative images from the pixel blocks extracted by the extracting unit, based on a similarity between the pixel blocks. The vector converting unit converts the representative images generated by the representative-image generating unit into vector information.

Abstract: An image processing apparatus includes: an extraction unit that extracts a first image and a second image similar to the first image, in a first resolution; and a generation unit that generates an image in a second resolution based on the respective images extracted by the extraction unit and phases of the respective images calculated with precision higher than one pixel in the first resolution.

Abstract: An encoding device includes a binary image generation unit that generates at least two binary images from a multivalued image by applying different methods, a check image generation unit that generates a check image based on the plural binary images generated by the binary image generation unit, and a code generation unit that generates coded data by encoding at least one of the binary images generated by the binary image generation unit and the check image generated by the check image generation unit by using different methods.

Abstract: This invention provides a data storage output apparatus that includes an input component, plural output components, a storage component and a conversion component. The input component inputs data. The plural output components output data in different respective data formats. The storage component stores data in an intermediate format, which can be converted to data formats required by the respective plural output components. The conversion component converts the data stored in the storage component to a data format corresponding to the output component and outputs the data to the output component.

Abstract: A translated document image production device has an extraction section, a translation section and a region backfill section. The extraction section extracts a group of pixels to be processed, the group of pixels having pixels for constituting a character or a character string. The translation section translates the character or character string. The region backfill section backfills the extracted group of pixels to maintain the background of the translated character or character string and that writes the translated character and character string.

Abstract: An encoding device has a shape encoding unit and a pattern encoding unit. The shape encoding unit encodes a shape of an image element. The pattern encoding unit encodes a binary pattern of the image element and the shape of the image element is related to the binary pattern of the image element.

Abstract: A coding apparatus includes a shape coding section and a density coding section. The shape coding section codes shape information of an image element contained in an input image. The density coding section codes density information of the image element contained in the input image, with using a density dictionary including a binary pattern representing an image density and first identification information identifying the binary pattern in association with each other.

Abstract: An image display control apparatus for controlling a display to display an image on the basis of coded data of an input image encoded layer by layer in a plurality of layers, includes: a decoder that decodes coded data of parts of layers composing an input image to image data; and a controller that controls a display to display image elements on the basis of the image data decoded by the decoder.

Abstract: An image processor obtains character images included in input image and the character codes for identifying the characters represented by the character images, classifies the character images included in the input image into a plurality of character image groups based on the obtained character codes, determines typical image patterns constituting the input image based on the character images classified in the character image groups, assigns indices for identifying the image patterns to the determined image patterns, and codes the occurrence position information of the character images included in the input image and the indices of the image patterns corresponding to the character images so as to be associated with each other.

Abstract: An image dictionary creating apparatus includes: an information obtaining unit that obtains results of character recognition processing for an input image; a character string selection unit that selects character strings adjacent to each other in the input image based on the results of character recognition obtained by the information obtaining unit; a typical pattern determining unit that determines typical image patterns composing the input image on the basis of the images of character strings selected by the character string selection unit; and an identification information assigning unit that assigns the respective determined image patterns determined by the typical pattern determining unit with identification information for identifying image patterns.

Abstract: Filtering for enhancing the reversible compression rate is performed for image data as preprocessing of compression processing. For image processing after the filtering, repeating of compression and decompression according to the reversible compression technique corresponding to the filtering is allowed. As the filtering and reversible compression processing are performed, a sufficient compression ratio is provided and accumulation of image quality degradation by repeating compression and decompression is prevented.

Abstract: An image coding apparatus includes an approximating element having plural different prediction techniques to approximate, a value of a target pixel to be coded with reference to values of peripheral pixels surrounding the target pixel; a holding element which holds information about ranks of the prediction techniques, the ranks obtained upon processing of the pixel preceding the target pixel; a determining element computing an error between each of approximate values obtained by the prediction techniques and that of the target pixel, selecting one of the prediction techniques for the target pixel based on the computer error, and performing the selection by preferentially referencing the rank information if the error is within a predetermined tolerance; and a coding element which codes the value of the target pixel using the approximate value obtained by the selected prediction technique.

Abstract: Input gray-scale bit map information is inputted to an image forming position extracting unit for extracting image forming position information. An input computer-formed image is inputted to an image forming position extracting unit for generating an image forming position. At an image forming position overlapping unit, two image forming positions are overlapped with each other, and the composed image forming position is sent to a pixel value calculating unit and an image forming position determining unit. The image value calculating unit measures a width of the composed image forming position and converts the measured value into a pixel value. The image forming position determining unit calculates a barycenter of the composed image forming position. The pixel value and the barycenter are sent as image information. Encoding without distortion can be executed by enhancing the precision of the barycenter.

Abstract: Images are to be efficiently and easily encoded while suppressing block distortion and pseudo-contour generation. A quantization characteristics determining unit receives pixel values from a pixel value input unit, measures the length S of the consecutive occurrence of the same pixel values in connection with a pixel to be encoded and the pixel value differences D, and determines quantization characteristics n with reference to the result of sensory evaluation. A quantization/inverse quantization unit quantizes pixel values to be inputted with the quantization characteristics n, and further inverse quantizes them to reduce the number of gray-scale levels. The output pixel values of the quantization/inverse quantization unit are encoded and outputted by an entropy encoding unit.

Abstract: An input image is subjected to transform by a DCT transforming unit 20. A coefficient analyzing unit 30 compares a predetermined coefficient and coefficient data 120, and obtains low-frequency image data 150 of the input image by a high-frequency coefficient masking unit 50 and an inverse DCT unit 60 on the basis of a result of that comparison. A pixel subsampling unit 70 receives this low-frequency image data 150, and generates a subsampled image on the basis of the aforementioned result of comparison. The subsampled image and coefficient information are transmitted to a decoding side. A decoding apparatus decodes an image on the basis of the subsampled image and the coefficient information.