Class / Patent application number | Description | Number of patent applications / Date published |
382269000 | Minimize jaggedness in edges (e.g., anti-aliasing) | 14 |
20080292205 | IMAGE OUTPUT APPARATUS, IMAGE OUTPUT METHOD AND IMAGE OUTPUT PROGRAM PRODUCT - An image output apparatus is provided with an image conversion unit for converting image data into an output image of intermediate gradation using a line screen for forming pixel points in stripes, an element angle storing unit for storing the angle information of line segments of the image data, a jaggy judging unit for judging whether or not jaggies will appear on the outline of the output image based on the angle information of the line segments stored in the element angle storing unit, and a screen angle setting unit for substantially changing the screen angle of the line screen if jaggies are judged to appear by the jaggy judging unit. | 11-27-2008 |
20080317373 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, RECORDING MEDIUM, AND PROGRAM - An image processing apparatus includes a ridge strength detecting unit for detecting a ridge strength that is the strength of a ridge included in an image. When a pixel value is changed in the form of a pulse in accordance with a positional change in a region that includes a plurality of pixels, the ridge strength is represented by a gradient and height of the pulse. | 12-25-2008 |
20090080792 | METHOD AND APPARATUS FOR ANTI-ALIASING SCAN CONVERSION - Methods and apparatuses for anti-aliasing scan conversion. In one aspect of the invention, an exemplary method to scan convert an image on a data processing system includes: sampling the image in a first direction to generate first signals for points along a second line in a second direction using a closed form solution for a convolution integral with a first kernel; and weighting the first signals for the points according to a second kernel in the second direction to generate a second signal for a pixel. In one example according to this aspect, the closed form solution is tabulated in a look up table. After entries are looked up from the look up table according to the image along a first line in the first direction on a first point of the points, the entries are combined to generate one of the first signals for the first point. | 03-26-2009 |
20090097776 | IMAGE PROCESSING APPARATUS AND CONTROL METHOD THEREFOR - This invention obtains a high-quality output image in which a jaggy or a disconnection of a thin line hardly stands out. An edge detection unit detects whether the pixel of interest is an edge pixel or a non-edge pixel. A screen processing unit performs screen processing for the pixel of interest to determine the output value of the N-level tone. A calculation unit performs filtering processing having a preset visual sense characteristic for an area including the pixel of interest to calculate the target value of the pixel of interest, and corrects the value of the pixel of interest so as to come close to the target value, thereby determining the output value of the N-level tone. The selector selects, according to the detection result by the edge detection unit, either the result from the calculation unit or that from the screen processing unit. | 04-16-2009 |
20090154831 | METHOD AND APPARATUS FOR DITHERING A PIXEL VALUE IN IMAGE - Disclosed is a method and an apparatus for dithering a pixel value in a image. The method includes checking a difference in chrominance signals between a particular pixel and a pixel adjacent to the particular pixel, in an input image, designating the particular pixel as being in a flat or a non-flat area in consideration of the difference in chrominance signals and dithering the particular pixel when the pixel is designated as being in the non-flat area. | 06-18-2009 |
20100054622 | SYSTEM, METHOD, AND APPARATUS FOR SMOOTHING OF EDGES IN IMAGES TO REMOVE IRREGULARITIES - System, method, and apparatus for smoothing of edges in images to remove irregularities are disclosed. In one aspect of the present disclosure, a method of image processing includes, identifying an edge in an image having an associated set of edge characteristics, determining the associated set of edge characteristics, and applying a low pass filter to a pixel of the edge based on the associated set of edge characteristics to generate a second image based on the image, wherein the edge in the image is smoothed in the second image. The method further includes generating a third image which is a blend of the original image and the second (edge-smoothed) image based on the associated set of edge characteristics. | 03-04-2010 |
20100080488 | FAST DIRECTIONAL IMAGE INTERPOLATOR WITH DIFFERENCE PROJECTION - Described is a technology in which a low resolution image is processed into a high-resolution image, including by a two interpolation passes. In the first pass, missing in-block pixels, which are the pixels within a block formed by four neighboring original pixels, are given values by gradient diffusion based upon interpolation of the surrounding original pixels. In the second interpolation pass, missing on-block pixels, which are the pixels on a block edge formed by two adjacent original pixels, are given values by gradient diffusion based upon interpolation of the values of those adjacent original pixels and the previously interpolated values of their adjacent in-block pixels. Also described is a difference projection process that varies the values of the interpolated pixels according to a computed difference projection. | 04-01-2010 |
20110142364 | RENDERING PIECE-WISE SMOOTH IMAGE FROM COLOUR VALUES ALONG PATHS | 06-16-2011 |
20110150356 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND PROGRAM - An image processing apparatus includes: a characteristic value calculation unit calculating a block luminance average value, which is an average value of luminance values in each of spatial blocks obtained by dividing an input image in a space direction, and a block luminance dispersion, which is a dispersion of the luminance values in each of the spatial blocks; and an edge-preserving smoothing unit calculating a general luminance value of pixels of the input image by setting a value obtained by approximately calculating a weighted average value of the luminance values of a noticed block containing noticed pixels of the input image, on the assumption that a distribution of the luminance values of each of the spatial blocks conforms to a Gaussian distribution based on the block luminance average value and the block luminance dispersion of each of the spatial blocks, as the general luminance value of the noticed pixels. | 06-23-2011 |
20120163730 | IMAGE PROCESSING APPARATUS WHICH PERFORMS ANTI-ALIASING ON INPUT IMAGE DATA AND IMAGE PROCESSING METHOD THEREOF - Disclosed in an image processing apparatus for performing anti-aliasing on input image data including a viewing window setting section which sets a viewing window of a predetermined size which includes a focused pixel, a difference determination section which extracts a plurality of combinations of two predetermined adjacent pixels in the viewing window and determines a difference between input pixel values of the two extracted pixels for each combination, a determination information obtaining section which obtains combination determination information based on a combination of determination results, and a pixel value calculation section which obtains an output pixel value of the focused pixel by carrying out a weighted addition of an input pixel value of the focused pixel and an input pixel value of a predetermined neighboring pixel which is adjacent to the focused pixel based on the combination determination information. | 06-28-2012 |
20120230601 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND PROGRAM - An image processing apparatus includes an edge strength calculating unit that sets, as an input image, a pixel number reduced image obtained by reducing the total number of pixels of an image captured by an imaging element and calculates edge strengths of a plurality of directions in a unit of a pixel block; an interpolated-pixel value calculating unit that calculates interpolated-pixel values as smoothing components of the plurality of directions in the pixel block; a weight calculating unit that calculates weights for the interpolated-pixel values as the smoothing components of the plurality of directions based on the edge strengths; and a blending processing unit that calculates a pixel value of the correction object pixel which is the center pixel of the pixel block by performing a blending process by weighted addition of the interpolated-pixel values, which are the smoothing components of the plurality of directions, and the calculated weights. | 09-13-2012 |
20120269455 | IMAGE PROCESSING APPARATUS AND METHOD, AND PROGRAM - A normal-phase candidate position selection unit designates a pixel on a horizontal or vertical line in a position separated by two lines from a target position of an input image as a normal-phase candidate pixel, which is a candidate for a pixel at which jaggies are in the same phase as a pixel of the target position. A reverse-phase candidate position selection unit designates a pixel between the target position in the input image and the normal-phase candidate pixel as a reverse-phase candidate pixel. The weight value calculation unit calculates a weight value based on a degree of similarity between an image adjacent to the target position and an image adjacent to the normal-phase candidate pixel. The weighted expected value calculation unit performs weighted addition of reverse-phase candidate pixels using the weight value and generates a reverse-phase image by reversing only the phase of the jaggies in the input image. | 10-25-2012 |
20130322780 | Image Interpolation Method Based On Matrix and Image Processing System - The present invention relates to an image interpolation method based on matrix and an image processing system. The image processing system first determines a gradient direction of an image region formed by a pixel dot array containing an interpolation point, and then based on the gradient direction and a position of the interpolation point, determines a triangle for interpolation in the image region formed with the pixel dot array, and finally, based on pixel values of pixel dots corresponding to three vertexes of the determined triangle and a distance from the interpolation point to a vertex of the triangle, calculates a pixel value of the interpolation point. Thus, the problem of edge jag or sawteeth of details in an oblique direction of a zoomed image is effectively solved, and a high-quality image is obtained. Furthermore, for the method the calculation is simple, and the computation load is light. | 12-05-2013 |
20160005148 | IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD, IMAGE PROCESSING PROGRAM, AND IMAGE DISPLAY DEVICE - Provided is an image processing device capable of performing appropriate noise removal or reduction on input images of various resolution. The image processing device includes a contour direction estimating unit ( | 01-07-2016 |