摘要:
An image interpolation device comprises a data storage unit (2) for storing the data in the neighborhood of a missing pixel, a filter interpolation unit (3) for performing a multiply-add computation on the data output from the data storage unit, a limiter processing unit (4) for limiting the data output from the filter interpolation unit to within the range of the data output from the data storage unit, and an interpolation data insertion unit (5) for interpolating the data output from the limiter processing unit into a position corresponding to the missing pixel in the data output from the data storage unit. The image interpolation device is capable of increasing the interpolation accuracy of missing pixels, especially in the interpolation of scanned document data including periodic data.
摘要:
Missing-pixel interpolation data are obtained such that the mean value of a plurality of pixels constituting a group of pixels including a missing pixel is equal to the mean value of a plurality of pixels constituting a group of pixels not including the missing pixel. For example, missing-pixel interpolation data are obtained by (1) obtaining a sum (SL) of the values of pixels other than the missing pixel (L) in the k pixels constituting the group (LC) of pixels including the missing pixel, (2) obtaining a sum (SA) of the values of k pixels constituting a group (NA) of pixels not including the missing pixel, and (3) taking the difference between these sums. This makes it possible to reduce interpolation error when a highly periodic image with missing pixels is interpolated.
摘要:
There are provided a first image enlarging means (2A) for enlarging the input image (Din) and outputting a first enlarged image (D2A); a high-frequency component image generating means (1) for extracting a high-frequency component of the input image (Din) and generating a first high-frequency component image (D1); a second image enlarging means (2B) for enlarging the first high-frequency component image (D1) and outputting a second enlarged image (D2B); a high-frequency component image processing means (3) for processing the second enlarged image (D2B) and generating a second high-frequency component image (D3); and a means (4) for adding the first enlarged image (D2A) and the second high-frequency component image (D3) and outputting the result. This provides the enlarged image with adequate high-frequency components, and a sense of resolution of the enlarged image can be obtained.
摘要:
A data search device that is provided in a communication apparatus detects a memory area storing data to be transmitted from a memory unit having memory areas defined by IDs allotted to data. The data search device includes: a first flag that is provided for each of the memory areas of the memory unit, and indicate whether the data in the corresponding memory area is updated; a second flag that is provided for each group consisting of a predetermined number of the first flags, and indicates a data update state when at least one set of data in the first flags in the corresponding group indicates an updated state; and a search control unit that detects the memory area storing the data to be transmitted, by searching for the corresponding first flag after detecting the second flag.
摘要:
An image reading apparatus includes: a light source emitting a plurality of colors; a light receiver including a plurality of pixels which receive lights of respective colors; an analog-to-digital converter which analog-to-digital converts analog signals obtained by the light receiver to obtain digital photoelectric conversion outputs, respectively; a color determining portion which receives output signals, determines whether output signals for respective colors from the same pixel are within predetermined ranges, respectively, and outputs, as dropout data, pixel position information of the pixel, the outputs signals from which are within the predetermined ranges, respectively; an image monochromating circuit which receives output signals and obtains monochrome data; a data substituting portion which receives the monochrome data, substitutes the monochrome data corresponding to the pixel position information from the color determining portion with a level at which the pixel is determined as a white level in a binarizing process.
摘要:
To prevent deterioration of sealing ability during installation of a second seal ring, facilitate parting of a first seal ring from a mold, and enhance degree of freedom of setting the thickness of a seal lip, a sealing device has a first seal ring (20) integrally formed with an installation ring (10) from a rubber-like elastic material and a second seal ring (30) assembled with the first seal ring (20), the first seal ring (20) has a seal lip (25) formed to project outward from a tip (11a) of a tube section (11) of the installation ring (10), and the seal lip (25) is made to be slidably in close contact with the outer peripheral surface of the second seal ring (30) in a state that with the seal lip (25) is reversed toward the inner periphery of the tube section (11) by insertion of the second seal ring (30).
摘要:
The compound operation input device of the invention includes a case; a flexible substrate mounted on a bottom plate section of the case a first operation body moving operable in a direction orthogonal to the flexible substrate a second operation body tilting operable and rotating operable, the second operation body being an annular member arranged at the periphery of the first operation body; a first switching means operated by the movement of the first operation body; a plurality of second switching means operated by the tilt of the second operation body; and a rotary switch that detects the rotating direction and the rotating amount of the second operation body. The first and second switching means and the slid contacting point pattern of the rotary switch are arranged on the same surface of the flexible substrate.
摘要:
An image processing method extends n-bit input image data by α bits to generate (n+α)-bit source data, where n and α are positive integers, and smoothes the source data. The maximum difference between gray levels of the unsmoothed source data in an area localized around each pixel is calculated, and a mixing ratio is determined from the maximum difference. The smoothed and unsmoothed source data are mixed according to the mixing ratio to generate output image data. In areas with gradually changing gray levels, the output image data are weighted toward the smoothed source data, mitigating image degradation due to quantization and gamma correction. In areas with sharp edges, the output image data are weighted toward the unsmoothed source data, preventing a loss of edge sharpness.
摘要:
Missing-pixel interpolation data are obtained such that the mean value of a plurality of pixels constituting a group of pixels including a missing pixel is equal to the mean value of a plurality of pixels constituting a group of pixels not including the missing pixel. For example, missing-pixel interpolation data are obtained by (1) obtaining a sum (SL) of the values of pixels other than the missing pixel (L) in the k pixels constituting the group (LC) of pixels including the missing pixel, (2) obtaining a sum (SA) of the values of k pixels constituting a group (NA) of pixels not including the missing pixel, and (3) taking the difference between these sums. This makes it possible to reduce interpolation error when a highly periodic image with missing pixels is interpolated.