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| Number | Title | Issue Date |
| 7620263 | Anti-clipping method for image sharpness enhancement An image processing system provides image enhancement and anti-clipping units. The anti-clipping unit for image sharpness enhancement, operates such that any shoot artifacts in the enhanced image that go beyond pixel value lower/upper bounds are properly adjusted ba... | 11/17/2009 |
| 7489830 | Methods for generating anti-aliased text and line graphics in compressed document images A method and system for storing and generating anti-aliased text and lineart data from compressed document image files, using a MRC model that represents the image as an ordered set of mask/image pairs at resolutions appropriate to the content of each layer. The met... | 02/10/2009 |
| 7440635 | Method for removing ringing artifacts from locations near dominant edges of an image reconstructed after compression A method to remove ringing artifacts from locations near dominant edges of an image reconstructed after compression. The image is decomposed into blocks small enough so that each would contain only one significant edge. A significant edge is tested as to whether it ... | 10/21/2008 |
| 7433535 | Enhancing text-like edges in digital images Systems and methods of enhancing text-like edges in digital images are described. In one aspect, pixels in a block of image pixels are segmented into first and second pixel classes. The pixel block is edge enhanced in response to a determination that the pixel block... | 10/07/2008 |
| 7433536 | Method for enhancing a digital image while suppressing undershoots and overshoots A method is provided for enhancing the details of an image while suppressing or preventing shoots that would otherwise occur during a prior art enhancement process. The enhancing method is based on recognizing that Shoots are likely to occur at edges of an image to ... | 10/07/2008 |
| 7412091 | System and method for registration of cubic fisheye hemispherical images Systems and methods for registering hemispheric images obtained using a fisheye lens for panoramic viewing, relating to spatial alignment and colour balancing of complement half-side images derived from the hemispheric images. The systems and methods for spatial ali... | 08/12/2008 |
| 7408559 | Upscaling of anti-aliased graphical elements Upscaling of an anti-aliased graphical element in a raster image includes generating a grid of pixels. Resolution of the grid is higher than resolution of the graphical element. Each pixel in the anti-aliased graphical element corresponds to a group of pixels in the... | 08/05/2008 |
| 7408672 | Image processing apparatus, image forming apparatus and image forming method When a print key on a console panel is depressed, a main CPU confirms enlargement/reduction rate information input via the console panel, and then, performs line thinning by setting a line thinning parameter according to the same magnification, an enlargement rate o... | 08/05/2008 |
| 7406208 | Edge enhancement process and system An edge enhancement system, including a selective edge controller for determining one or more properties of an edge of image data, and for generating one or more weighting factors on the basis of properties of the edge; and a scaling module for scaling an edge enhan... | 07/29/2008 |
| 7403310 | Image processing apparatus and method An edge amount detector detects an edge amount from RGB signals, and a filter processor synthesizes an output for edge enhancement with an output for smoothing at a proportion based on the detected edge amount. Another edge amount detector detects an edge amount of ... | 07/22/2008 |
| 7397972 | Image transform method for obtaining expanded image data, image processing apparatus and image display device therefor It is an object of the present invention to output a clear, expanded image wherein step-shapes or chain-shapes of oblique lines are reduced, distortion is eliminated and no constituent lines of fonts or graphics are missing. An image transform method, for transformi... | 07/08/2008 |
| 7394570 | Method and apparatus for eliminating seams in screened image data for repetitive printing A method of modifying screened image data so that there is no visible seam when the image is printed repeatedly in a circumferential direction, for example using a drum output device. One version applicable to images screened using a supercell includes cutting the i... | 07/01/2008 |
| 7370976 | Projection type image display device The device has flexure correcting means for operating to rotate a first eccentric cam provided at a central part of a first side of a reflecting mirror, thereby moving up and down the central part of the first side to correct the flexure of the reflecting mirror, to... | 05/13/2008 |
| 7372471 | System and method for single-sample virtual coverage anti-aliasing A graphics system has a mode of operation in which primitive coverage information is generated for real sample locations and virtual sample locations for use in anti-aliasing pixels. An individual pixel has a single real sample with color information and at least on... | 05/13/2008 |
| 7369140 | System, apparatus and method for subpixel shifting of sample positions to anti-alias computer-generated images A system, apparatus, and method are disclosed for modifying positions of sample positions for selectably oversampling pixels to anti-alias non-geometric portions of computer-generated images, such as texture, at least in part, by translating (e.g., shifting) shading... | 05/06/2008 |
| 7366358 | Method of and system for generating image signal An original image including therein a predetermined periodic pattern is read out by sampling the original image at a frequency higher than a desired sampling frequency, and an initial image signal is thus obtained. The initial image signal is then re-sampled at the ... | 04/29/2008 |
| 7355744 | Image processing method for superimposing high-resolution character data on low-resolution image data 600 dpi binary character shape data is created from 600 dpi character data inputted by a PC and written sequentially to a memory. The 600 dpi character data inputted from the PC and 300 dpi image data are stored as 300 dpi 8-bit graphics data. Next, 600 dpi 8-bit mu... | 04/08/2008 |
| 7348996 | Method of and system for pixel sampling A method, system, and article of manufacture for reducing aliasing. A method in accordance with one embodiment sampling a pixel of an image at a plurality of pixel sample points to produce a corresponding plurality of pixel sample values, wherein at least one of the... | 03/25/2008 |
| 7348991 | Video/graphics text mode enhancement method for digitally processed data A text enhancement unit is introduced in order to alleviate the degradation of text characters on computer or television displays. The text enhancement unit uses an enhancement process to regain uniformity and intensity that may be lost during image processing. The ... | 03/25/2008 |
| 7346225 | Demosaicing graphical content Demosaicing of graphical content is provided. In an illustrative implementation a demosaicing engine executing one or more demosaicing algorithms is employed to operate on graphical content to provide better quality and higher resolution images. In operation, the de... | 03/18/2008 |
| 7333119 | System and method for virtual coverage anti-aliasing A graphics system has a mode of operation in which real samples and virtual samples are generated for anti-aliasing pixels. Each virtual sample identifies a set of real samples associated with a common primitive that covers a virtual sample location within a pixel. ... | 02/19/2008 |
| 7333673 | Method and apparatus for image detail enhancement without zigzagged edge artifact A method and system for detecting slant edge areas in an image comprising a plurality of pixels, and for preventing zigzagged slant edge artifacts in an image detail enhancement process. Image pixels that belong to a slant image edge are detected and gain suppressio... | 02/19/2008 |
| 7330601 | Method of describing pattern repetitiveness of image A method for describing pattern repetitiveness which may exist within an image, is provided. The method of describing pattern repetitiveness of an image comprises: (a) projecting an image on a predetermined axis having a predetermined direction, (b) decomposing the ... | 02/12/2008 |
| 7330592 | Method and apparatus for detecting the location and luminance transition range of slant image edges A system and method for detecting location and luminance transition range of slant image edge in a digital image. The variance value for the pixels inside a window in the image is calculated, based on which a current pixel is classified. If the current pixel is in a... | 02/12/2008 |
| 7327895 | Method and apparatus for filtering a digital image acquired with a medical device using a spatial-frequency operator In a method and an apparatus for filtering a digital image acquired with a medical device by means of a spatial-frequency operator that automatically allow an optimum filtering of the source image, the integral signal-to-noise ratio of the digital image is calculate... | 02/05/2008 |
| 7324709 | Method and apparatus for two-dimensional image scaling An output pixel datum is produced from input pixel data by a method wherein the brightness levels of several input pixels closely associated coordinate-wise with the output pixel, are examined to determine whether a relatively less complex graphics-optimized scaling... | 01/29/2008 |
| 7315661 | Directional interpolation method using DCT information and related device The invention provides a method for interpolating a pixel within an image. The image has a plurality of pixels arranged in a matrix format. The method includes detecting if there is an edge in a block of the image according to a Discrete Cosine Transform (DCT) data ... | 01/01/2008 |
| 7313290 | Method for improving the viewing of small icons and small text on high resolution displays When run on high pixel density monitors, software applications, which are written to be legible at all resolutions benefit greatly from the high pixel density. Other applications, especially those containing resources whose dimensions and placement are described in ... | 12/25/2007 |
| 7298918 | Image processing apparatus capable of highly precise edge extraction An image processing apparatus first forms an edge image of an input image using, for example, SOBEL operator, and performs a smoothing process on the formed edge image by using an average filter. Thereafter, the image processing apparatus calculates a difference bet... | 11/20/2007 |
| 7295346 | Methods and apparatus for antialiasing using selective implementation of logical and averaging filter operations Methods and apparatus for antialiasing images that contain one or more image objects such as colored text, line art, and graphical objects, such that the edge pixels of an antialiased image object will exhibit relatively uniform values, and the appearance of the ima... | 11/13/2007 |
| 7286138 | Discontinuity edge overdraw Systems and methods for discontinuity edge overdraw are described. In one aspect, a polygonal mesh is rendered to produce a computer-generated image. The image exhibits aliasing at its discontinuity edges. The discontinuity edges are sorted prior to overdrawing. The... | 10/23/2007 |
| 7283674 | Using graphic objects in MFD scan-to-export function A method of compressing a document includes: acquiring an image of the document, the image represented by pixels; segmenting the image into Mixed Raster Content (MRC) planes including a foreground plane (12) that receives a first portion of the pixels, a back... | 10/16/2007 |
| 7280119 | Method and apparatus for sampling on a non-power-of-two pixel grid The embodiments of the present invention are a method and apparatus to perform anti-aliasing using multi-sampling on a non-power-of-two pixel grid. Using the present invention with 6 sample multisampling gives the same visual antialiasing quality as 8 samples using ... | 10/09/2007 |
| 7266250 | Methods for generating anti-aliased text and line graphics in compressed document images A method and system for storing and generating anti-aliased text and lineart data from compressed document images files, using a MRC model that represents the image as an ordered set of mask/image pairs at resolutions appropriate to the content of each layer. The me... | 09/04/2007 |
| 7265876 | PWM rendering for color/gray-scale text and graphics for laser printer The appearance of edges in an image is improved through precise placement of subpixels within pixel cells that are located on or near edges in an image. Image data is examined to identify a “target pixel” near the edge of an object that represents the object and... | 09/04/2007 |
| 7263229 | Method and apparatus for detecting the location and luminance transition range of slant image edges A system that detects the location as well as the luminance transition range of slant image edge in a digital image. The variance value of the pixels inside a rectangular image window centered with a current pixel is checked to determine if the current pixel is in a... | 08/28/2007 |
| 7242412 | Method and apparatus for expanding a source pixel in a digital image An apparatus for expanding a source pixel in a digital image includes an edge direction detector detecting edge direction in the vicinity of the source pixel. An interpolator interpolates multiple sets of pixels in a region surrounding the source pixel in the detect... | 07/10/2007 |
| 7227556 | High quality antialiased lines with dual sampling pattern Antialiased lines are classified according to their orientation, e.g. as x-major or y-major depending whether the x or y extent of the line is larger. Different subpixel sampling patterns are used for different lines, in accordance with this classification. This per... | 06/05/2007 |
| 7218420 | Gray level halftone processing An image processing method and apparatus for generating a gray level rendered pixel value that has been subjected to a halftoning process. In the method and apparatus a gray level pixel value of the pixel to be rendered by the halftoning process is provided as one i... | 05/15/2007 |
| 7212675 | Method of finding orphan blocks in block based image compression schemes A method of processing the contents of an image which are digitized and formatted into macro blocks (MB) of information. The method involves flagging for further use those macro blocks whose contents satisfy a first criteria. Further processing of the method is perf... | 05/01/2007 |