Abstract: A decompressing apparatus comprises a first decompressing unit, a second decompressing unit which can decompresses encoded data that the first decompressing unit does not support, an identifying unit which identifies a type of each encoded block, a generating unit which, if encoded block of interest is a type that can be decompressed by the first decompressing unit, stores the encoded data in a memory, and, if not, stores predetermined encoded data that can be decompressed by the first decompressing unit in the memory, and control unit which controls the first decompressing unit to decompress the encoded data in the memory to generate tentative image data, then controls the second decompressing unit to decompress the encoded data that cannot be decompressed by the first decompressing unit, and updates the tentative image data with the decompression result.

Abstract: A decompressing apparatus comprises a first decompressing unit, a second decompressing unit which can decompresses encoded data that the first decompressing unit does not support, an identifying unit which identifies a type of each encoded block, a generating unit which, if encoded block of interest is a type that can be decompressed by the first decompressing unit, stores the encoded data in a memory, and, if not, stores predetermined encoded data that can be decompressed by the first decompressing unit in the memory, and control unit which controls the first decompressing unit to decompress the encoded data in the memory to generate tentative image data, then controls the second decompressing unit to decompress the encoded data that cannot be decompressed by the first decompressing unit, and updates the tentative image data with the decompression result.

Abstract: An encoding device comprises: a dividing unit configured to divide an encoding unit of an image into a plurality of regions; a header generation unit configured to generate, for each boundary that partitions each of the plurality of regions along a direction which crosses a line, a boundary header used to identify the boundary; a trajectory generation unit configured to generate a piece of trajectory information representing a displacement of the boundary associated with progress of a line; and an aligning unit configured to, when generating encoded data including generated boundary headers and generated pieces of trajectory information, change, in accordance with the number of boundaries, a manner in which the generated boundary headers and the generated pieces of trajectory information are aligned.

Abstract: An encoding device comprises: a dividing unit configured to divide an encoding unit of an image into a plurality of regions; a header generation unit configured to generate, for each boundary that partitions each of the plurality of regions along a direction which crosses a line, a boundary header used to identify the boundary; a trajectory generation unit configured to generate a piece of trajectory information representing a displacement of the boundary associated with progress of a line; and an aligning unit configured to, when generating encoded data including generated boundary headers and generated pieces of trajectory information, change, in accordance with the number of boundaries, a manner in which the generated boundary headers and the generated pieces of trajectory information are aligned.

Abstract: An information processing apparatus generates intermediate data to convert input print data into raster image data. The information processing apparatus includes a decoding unit configured to decode coded compression data of an image object to be drawn in an image based on the print data, and a rendering unit configured to generate raster image data by performing rendering for each region of the image with reference to image data of the image object stored by a storing unit. The decoding unit decodes compression data of an image object to be drawn in an interested region and at least a part of compression data of an image object to be drawn in a region following the interested region, while the rendering unit generates raster image data for the interested region.

Abstract: A reference area is extracted from image data, and from the pixels included in the reference area, extracted are a plurality of small sections in which pixels are arranged so as to be symmetrical with respect to the center pixel of the reference area in the horizontal and vertical directions, and point-symmetrical with respect to the center pixel, while overlap of pixels is allowed between each of the small sections. Determination is made as to whether or not image data included in the reference area matches a predetermined pattern. A characteristic of the image data in the reference area is determined based on a number of characteristics of the plurality of small sections. Based on the results of the determination, it is judged whether or not to perform smoothing on the center pixel of the reference area. Then, the smoothing is performed on the judged center pixel.

Abstract: A reference area is extracted from image data, and from the pixels included in the reference area, extracted are a plurality of small sections in which pixels are arranged so as to be symmetrical with respect to the center pixel of the reference area in the horizontal and vertical directions, and point-symmetrical with respect to the center pixel, while overlap of pixels is allowed between each of the small sections. Determination is made as to whether or not image data included in the reference area matches a predetermined pattern. A characteristic of the image data in the reference area is determined based on a number of characteristics of the plurality of small sections. Based on the results of the determination, it is judged whether or not to perform smoothing on the center pixel of the reference area. Then, the smoothing is performed on the judged center pixel.

Abstract: An image forming apparatus includes a drive control unit configured to control drive of a vibrating mirror in such a manner that vibration of the vibrating mirror becomes a reference vibration; a determination unit configured to determine an equilibrium convergence state of the vibrating mirror driven by the drive control unit; and a correction unit configured to correct magnification of an image in one scanning interval based upon result of determination by the determination unit.