Abstract: An optical device including a Faraday rotator, wherein the Faraday rotator includes a Faraday element 31 made of a magnetooptical material 34, two permanent magnets 35, and an electromagnet 20a, with a direction of travel of light as a front-rear direction, the Faraday element includes light incident/emission surfaces in front and rear, and surfaces parallel to each other in left and right, the plate-shaped permanent magnets are attached to each of left and right side surfaces of the Faraday element such that different magnetic poles are opposed to each other, and the permanent magnets are configured to apply a permanent magnetic field to the Faraday element in one direction of a left direction and a right direction, a shaft part 10 that holds the Faraday element, attached with the permanent magnets, over an entire length in the front-rear direction is included, the electromagnet is configured including a coil made by winding a conductor 21 around a periphery of the shaft part with the front-rear direction as

Abstract: An optical device including a Faraday rotator, wherein the Faraday rotator includes a Faraday element 31 made of a magnetooptical material 34, two permanent magnets 35, and an electromagnet 20a, with a direction of travel of light as a front-rear direction, the Faraday element includes light incident/emission surfaces in front and rear, and surfaces parallel to each other in left and right, the plate-shaped permanent magnets are attached to each of left and right side surfaces of the Faraday element such that different magnetic poles are opposed to each other, and the permanent magnets are configured to apply a permanent magnetic field to the Faraday element in one direction of a left direction and a right direction, a shaft part 10 that holds the Faraday element, attached with the permanent magnets, over an entire length in the front-rear direction is included, the electromagnet is configured including a coil made by winding a conductor 21 around a periphery of the shaft part with the front-rear direction as

Abstract: A labeling unit that extracts a character included in raster format image data and finds the size of the extracted character, and an approximation method determination unit that determines whether or not to use curve approximation to convert the character based on the found size, are provided. In the case where it has been determined to use curve approximation, the character is converted into a vector format by performing straight-line approximation or curve approximation on each of the various parts of the contour of the character, whereas in the case where it has been determined not to use curve approximation, the character is converted into a vector format by performing straight-line approximation and not performing curve approximation on each of the various parts of the contour of the character.

Abstract: There are provided a labeling portion that extracts a character included in raster format image data, a complexity calculation portion that obtains a degree of complexity indicating complexity of the character, an approximation method determination portion that determines whether or not to use curve approximation to convert the character based on the degree of complexity thus obtained. In the case where it has been determined to use the curve approximation, the character is converted into a vector format by performing straight-line approximation or curve approximation on each part of a contour of the character, whereas in the case where it has been determined not to use the curve approximation, the character is converted into a vector format by performing the straight-line approximation on each part of the contour of the character without performing the curve approximation.

Abstract: In order to reduce the data amount of image data while preventing degradation of image quality, an MFP includes an image data acquiring portion to acquire image data, a region extracting portion to extract regions having predetermined attributes from the image data, a selecting portion to select one of the extracted regions, a reduction portion to reduce the data amount of the image data by processing the selected region in a manner predetermined for the attribute of that region, and a comparing portion to compare the data amount of the image data after reduction of the data amount with a predetermined target value, in which the selecting portion selects the regions one by one until the comparing portion determines that the data amount of the image data is equal to or less than the target value.

Abstract: In order to reduce the data amount of image data while preventing degradation of image quality, an MFP includes an image data acquiring portion to acquire image data, a region extracting portion to extract regions having predetermined attributes from the image data, a selecting portion to select one of the extracted regions, a reduction portion to reduce the data amount of the image data by processing the selected region in a manner predetermined for the attribute of that region, and a comparing portion to compare the data amount of the image data after reduction of the data amount with a predetermined target value, in which the selecting portion selects the regions one by one until the comparing portion determines that the data amount of the image data is equal to or less than the target value.

Abstract: Given a circular graph that is divided by four colors (red, blue, yellow, and green), for example. This circular graph shows information indicated by the corresponding colors in accordance with planar dimensions of respective areas (e.g., a ratio of items corresponding to the respective colors to total and the like). Furthermore, the items corresponding to the respective colors are described as a legend independently of the circular graph. For example, since for people with protanopia/deuteranopia, “red” and “green” look the same, they cannot identify these colors. In image processing according to a first embodiment, the information indicated by the colors is added to a graph as shown in FIG. A to generate an image as shown in FIG. 1C.

Abstract: There are provided a labeling portion that extracts a character included in raster format image data, a complexity calculation portion that obtains a degree of complexity indicating complexity of the character, an approximation method determination portion that determines whether or not to use curve approximation to convert the character based on the degree of complexity thus obtained. In the case where it has been determined to use the curve approximation, the character is converted into a vector format by performing straight-line approximation or curve approximation on each part of a contour of the character, whereas in the case where it has been determined not to use the curve approximation, the character is converted into a vector format by performing the straight-line approximation on each part of the contour of the character without performing the curve approximation.

Abstract: A labeling unit that extracts a character included in raster format image data and finds the size of the extracted character, and an approximation method determination unit that determines whether or not to use curve approximation to convert the character based on the found size, are provided. In the case where it has been determined to use curve approximation, the character is converted into a vector format by performing straight-line approximation or curve approximation on each of the various parts of the contour of the character, whereas in the case where it has been determined not to use curve approximation, the character is converted into a vector format by performing straight-line approximation and not performing curve approximation on each of the various parts of the contour of the character.