Abstract: A magnetic resonance imaging apparatus and a diffusion-weighted image acquiring method form a radial k-space through a radial sampling and acquire a diffusion-weighted image from the radial k-space, with the diffusion-weighted image acquiring including receiving an echo signal generated from the subject, and forming a k-space having a plurality of sampling lines by sampling the echo signal that is received, wherein the directions of the diffusion gradient magnetic fields applied at the time of forming the sampling lines that compose the k-space to cross each other at two adjacent sampling lines.

Abstract: A document including a two-dimensional barcode recorded therein is scanned, the two-dimensional barcode of the scan image is decoded, a text recorded in the document is extracted, the extracted text or a document produced by a document editing unit is attached to an e-mail, and the e-mail is transmitted. The text attached to the e-mail can be viewed at the side of a receiver. Since the document can be edited using at least one of the position, the size, the color and the arrangement of the text, readability of the text can be improved. Accordingly, it is possible to search the received text to easily find a desired document at the side of the receiver.

Abstract: A magnetic resonance imaging apparatus and a diffusion-weighted image acquiring method form a radial k-space through a radial sampling and acquire a diffusion-weighted image from the radial k-space, with the diffusion-weighted image acquiring including receiving an echo signal generated from the subject, and forming a k-space having a plurality of sampling lines by sampling the echo signal that is received, wherein the directions of the diffusion gradient magnetic fields applied at the time of forming the sampling lines that compose the k-space to cross each other at two adjacent sampling lines.

Abstract: An image processing apparatus and a control method thereof. Information of image processing parameters, such as halftoning, edge emphasis, color correction, and gamma correction, is inserted into the document to be printed in the form of the watermark during the printing work. Thus, when the user wants to copy the printed document, the information of the image processing parameters used for printing the document is optimized suitable for the copy by detecting the watermark inserted into the printed document, thereby improving the quality of the copy. The method includes inserting first information of image processing parameters, which are used to print the document, into the document when printing the document, and optimizing second information of image processing parameters to be used for copying the document using the first information of image processing parameters inserted into the document when copying the document.

Abstract: A scanning apparatus includes a scanning head that scans an image of a document positioned on a stage glass, but varying in its distance therefrom. A boundary line is detected to determine an amount of skew therein. A skew line is compared with an established reference line, and a correction factor is calculated based on the result of the comparison. The original image processed to map the boundary line to the reference line and image data inside of the boundary line is similarly mapped based on the calculated correction factor. Beneficially, skews of an image produced when a thick book is scanned can be corrected simply.

Abstract: A scanning apparatus includes a scanning head that scans an image of a document positioned on a stage glass, but varying in its distance therefrom. A boundary line is detected to determine an amount of skew therein. A skew line is compared with an established reference line, and a correction factor is calculated based on the result of the comparison. The original image processed to map the boundary line to the reference line and image data inside of the boundary line is similarly mapped based on the calculated correction factor. Beneficially, skews of an image produced when a thick book is scanned can be corrected simply.

Abstract: An image forming apparatus and a method of using the same, the image forming apparatus including: a detection unit to detect an edge of an input image; a categorization unit to categorize the detected edge, according to a gray value and line width; and a compensation unit to compensate the gray value according to the categorized edge type.

Abstract: A document including a two-dimensional barcode recorded therein is scanned, the two-dimensional barcode of the scan image is decoded, a text recorded in the document is extracted, the extracted text or a document produced by a document editing unit is attached to an e-mail, and the e-mail is transmitted. The text attached to the e-mail can be viewed at the side of a receiver. Since the document can be edited using at least one of the position, the size, the color and the arrangement of the text, readability of the text can be improved. Accordingly, it is possible to search the received text to easily find a desired document at the side of the receiver.

Abstract: A document including a two-dimensional barcode recorded therein is scanned, the two-dimensional barcode of the scan image is decoded, a text recorded in the document is extracted, the extracted text or a document produced by a document editing unit is attached to an e-mail, and the e-mail is transmitted. The text attached to the e-mail can be viewed at the side of a receiver. Since the document can be edited using at least one of the position, the size, the color and the arrangement of the text, readability of the text can be improved. Accordingly, it is possible to search the received text to easily find a desired document at the side of the receiver.

Abstract: An image forming apparatus to improve image quality. An image forming apparatus includes an object dividing unit to divide scanned image data into objects, an object size estimation unit to estimate a size of each object, a controlling unit to determine whether to perform image quality enhancement processing for each object according to the estimated size of the object, and an image quality enhancement unit to perform image quality enhancement processing for the objects according to the determination of the controlling unit. Therefore, when a document is printed, data having optimum quality are provided.

Abstract: A document including a two-dimensional barcode recorded therein is scanned, the two-dimensional barcode of the scan image is decoded, a text recorded in the document is extracted, the extracted text or a document produced by a document editing unit is attached to an e-mail, and the e-mail is transmitted. The text attached to the e-mail can be viewed at the side of a receiver. Since the document can be edited using at least one of the position, the size, the color and the arrangement of the text, readability of the text can be improved. Accordingly, it is possible to search the received text to easily find a desired document at the side of the receiver.

Abstract: An image forming apparatus and a method of using the same, the image forming apparatus including: a detection unit to detect an edge of an input image; a categorization unit to categorize the detected edge, according to a gray value and line width; and a compensation unit to compensate the gray value according to the categorized edge type.

Abstract: Provided are a method and apparatus for determining error diffusion coefficients.

Abstract: An image processing apparatus and a control method thereof. Information of image processing parameters, such as halftoning, edge emphasis, color correction, and gamma correction, is inserted into the document to be printed in the form of the watermark during the printing work. Thus, when the user wants to copy the printed document, the information of the image processing parameters used for printing the document is optimized suitable for the copy by detecting the watermark inserted into the printed document, thereby improving the quality of the copy. The method includes inserting first information of image processing parameters, which are used to print the document, into the document when printing the document, and optimizing second information of image processing parameters to be used for copying the document using the first information of image processing parameters inserted into the document when copying the document.

Abstract: A scanning apparatus includes a scanning head that scans an image of a document positioned on a stage glass, but varying in its distance therefrom. A boundary line is detected to determine an amount of skew therein. A skew line is compared with an established reference line, and a correction factor is calculated based on the result of the comparison. The original image processed to map the boundary line to the reference line and image data inside of the boundary line is similarly mapped based on the calculated correction factor. Beneficially, skews of an image produced when a thick book is scanned can be corrected simply.

Abstract: An apparatus and method of diffusing a color error which includes modulating a threshold value using a binary error of different color channels, to prevent overlapping of dots of a channel, when a sum of input values of the different color channels is not more than a predetermined value, determining a channel whose color is to be output by comparing a corrected input value of each channel in which an error is diffused and binarizing a color channel by comparing the modulation threshold value with the corrected input value of the determined channel.

Abstract: An error diffusion method and apparatus using an area ratio of candidate colors in a CMYKRGBW cube, wherein the candidate colors are determined in response to an input value, and the CMYKRGBW cube is converted into a color space consisting of only four colors so that the candidate colors can be evenly distributed. The color space is then expressed using the area ratio of the candidate colors. Accordingly, it is possible to evenly distribute candidate colors in all gray-scale regions, including a highlight region, thereby obtaining a soft image that does not have a pattern that is strenuous on the eye of an observer.

Abstract: A method of and apparatus for detecting a pixel distance to adjust a threshold value are disclosed. The method and apparatus include determining a first coordinate of a first pixel with reference to a minor pixel for each pixel of an image, and detecting a first pixel distance which corresponds to a distance between the first pixel and the minor pixel by using the determined first coordinate, wherein the first pixel is binarized by adjusting a threshold value based on the detected first pixel distance, and the first coordinate is reset when the binarized first pixel is determined to be the minor pixel.

Abstract: Provided are a method and apparatus for determining error diffusion coefficients.