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"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
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| Number | Title | Issue Date |
| 8169665 | Tone dependent green-noise error diffusion method and printing device thereof A tone dependent green-noise error diffusion method includes setting a first threshold and a second threshold, and determining a two-level value of a color level of an input image according to the first threshold and the second threshold; subtracting the two-level v... | 05/01/2012 |
| 8004717 | Stack flipping document handling system for utilization with printing lazy-portrait formatted documents A printed sheet handling system and method for use with lazy-portrait narrow-end to narrow-end (LPEE) formatted pages web printed pages to produce document sets includes: a printer to print LPEE formatted paired document pages printed in 1 to N order and face up on ... | 08/23/2011 |
| 7826096 | Image processing method and image recording apparatus The image processing method converts an input image having multiple tones into an image having fewer tones than the input image, for image recording by a recording head including a plurality of recording elements arranged in a prescribed direction. The pixel values ... | 11/02/2010 |
| 7420708 | Method for processing color image data employing a stamp field A method for processing image data that employs a stamp field that contains data representing a distance metric for use with a variety of error diffusion operations. The distance metric possesses distance-order preservation permitting the distance from a previous do... | 09/02/2008 |
| 7369276 | Multi-level halftoning providing improved texture uniformity A method for multi-level halftoning an input digital image to form an output digital image which includes a multi-level error diffusion halftoning process incorporating periodic dither signals whose amplitudes are adjusted as a function of the error-diffusion textur... | 05/06/2008 |
| 7362473 | Image processing technique for tone number conversion of image data The present invention relates to an image processing technique for improving dot dispersion in highlight areas and shadow areas in an error diffusion method. The image processing device of the invention has a plurality of types of error diffusion matrices wit... | 04/22/2008 |
| 7355747 | System for improving the speed of data processing An apparatus includes a first processing device to perform halftoning on a first set of values corresponding to a first set of pixels and a second processing device to perform halftoning on a second set of values corresponding to a second set of pixels, with ones of... | 04/08/2008 |
| 7342696 | Computational moiré compensation The amount of moiré in halftone printed images is reduced using unique moiré intensity functions and moiré vectors in a halftoner. In various embodiments, moiré phase angle zones are determined over the full field of an image and high addressability units in the... | 03/11/2008 |
| 7342688 | Apparatus for eliminating moire in scanned image and method for the same A method for eliminating moire in scanned digital image comprises the steps of using an average circuit for taking weighted average and error diffusing a gray level difference between an error diffusion pixel Gij and neighbor pixels to neighbor to obtain ... | 03/11/2008 |
| 7333244 | Method and system for embedding an image into two other images A method of embedding an image into two images by performing a digital halftoning process on a Cartesian product of color spaces to embed the image into the two images. A digital halftoning process includes an iterative isotropic halftoning process. The iterative is... | 02/19/2008 |
| 7327491 | Image processing apparatus, image processing method, computer program and computer-readable storage medium For M (magenta) and C (cyan), in a case of generating, e.g., ternary data of C0 to C2 and M0 to M2 respectively by using a look-up table on the basis of an error diffusion method, in a highlight portion of input M and C data (to which err... | 02/05/2008 |
| 7324598 | Apparatus and method to reduce quantization error An apparatus includes a quantizer to generate a quantized signal from an input signal and a function unit may be included to generate an output signal by applying a predetermined function to the quantized signal. The apparatus further may include a correction unit t... | 01/29/2008 |
| 7319549 | Multiple weight error diffusion A method for halftoning includes the steps of defining a first set of weight sets, and defining a second set of weight sets. A first error associated with a first pixel location of a plurality of pixel locations is diffused to a first neighboring at least one pixel ... | 01/15/2008 |
| 7301673 | Error diffusion processing method An error diffusion processing method includes determining a binary value of an input pixel according to a grayscale level of the input pixel, searching a nearest pixel that has the same binary value as the input pixel, and comparing a measured actual distance with a... | 11/27/2007 |
| 7289248 | Image recording apparatus and image correction method The image recording apparatus comprises: a recording head including recording elements which record an image onto a recording medium; an abnormal recording element specification device which specifies an abnormal recording element from the recording elements of the ... | 10/30/2007 |
| 7280259 | Method for printing a color proof using a spatial filter The invention is a method for printing a color proof from an initial halftone bitmap file (10) having individual dots (10a, 10b, 10c, 10d) using a spatial filter (20) which is created from a calib... | 10/09/2007 |
| 7280252 | Error diffusion of multiresolutional representations A method and apparatus for performing error diffusion of a multiresolutional representation of an image is disclosed herein. In one embodiment, an image is received as a pixel representation. The image is converted from a pixel representation to a multiresolutional ... | 10/09/2007 |
| 7268919 | Image data processing apparatus, method, and program that diffuses gradiation error for each pixel in target block There has been a demand to accelerate image data conversion through the use of the error diffusion method. To convert image data, it is determined whether a specified block process condition is satisfied on the basis of a gradation value for each pixel in a target b... | 09/11/2007 |
| 7245397 | Apparatus and method for halftoning color image by quantizing tone level of subject pixel based on tone levels of neighboring pixels An image forming apparatus is disclosed in which a quantization is effected for a halftone color image decomposed into pixels, in which a comparison is made, for respective separate color-components of each pixel, between a tone level of each pixel and a threshold v... | 07/17/2007 |
| 7236269 | System and method for dithering with reduced memory A dithering system yielding two-dimensional dither functioning is implemented without line memories. For each primary input color, a feedback loop outputs an color input signal plus error that can be preset to different values. The desired result is that vertical ar... | 06/26/2007 |
| 7233963 | Systems and methods for diffusing clipping error Systems and methods are provided for diffusing clipping error in a computing system. When a data set contains values which are to be restricted to a range, and the data set includes one or more values which are beyond the range, the invention provides methodology th... | 06/19/2007 |
| 7227670 | Method of selective edge softening and rendering for the suppression of halo Selective edge softening and selective edge dithering is introduced into an image representation to improve local control where halo problems are expected. Selective areas of dilation are isolated and separately dithered or halftoned, the result of which is then swa... | 06/05/2007 |
| 7227669 | Method of selective edge softening and rendering for the suppression of halo Selective edge softening and selective edge dithering is introduced into an image representation to improve local control where halo problems are expected. Selective areas of dilation are isolated and separately dithered or halftoned, the result of which is then swa... | 06/05/2007 |
| 7199905 | Systems and methods for halftoning multiple color separation layers by interlayer error diffusion Error diffusion halftoning systems and methods propagate the error both within a color layer and between the color layer being halftoned and subsequent color layers yet to be halftoned. Threshold array halftoning systems and methods diffuse error to subsequent color... | 04/03/2007 |
| 7196821 | Image processing device, printing control device, image processing method, and recorded medium When image data is converted into an expression format based on the dot on-off state, such conversion is performed in a unit of a raster group comprising a predetermined number of adjacent rasters. When this is done, the binarization errors occurring in each pixel o... | 03/27/2007 |
| 7177047 | Gamut-preserving color imaging A color imaging technique includes setting a target value in a device-independent first color space and mapping the target value to a substantially complete point set in a second color space. The point set may include a plurality of points, each of which define subs... | 02/13/2007 |
| 7146047 | Image processing apparatus and method generating binary image from a multilevel image An information processing apparatus extracts a plurality of strokes from a multilevel image, and generates a stroke binary image. Next, the image processing apparatus extracts feature amounts indicating the thickness and the smoothed graylevel of a stroke in a neigh... | 12/05/2006 |
| 7123269 | Modifying vector objects Computer programs and computer-implemented methods implement techniques for applying a modification operation to vector objects in an image. These include receiving user input applying a modification operation in an image, identifying one or more vector objects to b... | 10/17/2006 |
| 7119923 | Apparatus and method for image processing There is provided an image processing apparatus including an image correcting amount computing unit for computing a proper amount of image correction based on image data of an image of an original delivered from an image input unit; an image processing unit for perf... | 10/10/2006 |
| 7110141 | Image processing apparatus and method intensively providing dots in halftone process There is provided an image processing apparatus, operating as described below, employing an error distribution method to perform a halftone process intensively providing dots to achieve high resolution and a high level of tone representation simultaneously. The imag... | 09/19/2006 |
| 7098876 | Image display method and system for plasma display panel An image of each field displayed on a plasma display panel corresponding to input image signals is divided into sub-fields of different weights, the sub-fields being divided into two continuous sub-field groups having a different weighting value, and in which the we... | 08/29/2006 |
| 7081972 | Image processing apparatus and image processing method In order to acquire a good binary image at all levels of gray scale, an image processing apparatus for quantizing input multivalued image data by a multivalued error diffusion method, selecting a predetermined dot pattern based on the quantized image data and output... | 07/25/2006 |
| 7064859 | Method, system, program, and data structure for producing a look-up table to enhance print quality Disclosed is a method, system, and program for generating a table for enhancing the print quality of input raster pel data. An output value is generated for different patterns of pel data. Each output value indicates a sub-pulse width power to charge a sub-pel regio... | 06/20/2006 |
| 7062099 | Image processing method and apparatus using self-adaptive binarization The present invention provides a unique method, apparatus, system and storage medium for image binarization process, wherein an image to be processed is divided into a plurality of sub-images and an binarization threshold for each of the sub-images is determined bas... | 06/13/2006 |
| 7043089 | Overflow error diffusion Methods, devices and systems for overflow error diffusion in image processing are provided. A method includes calculating error values, em, corresponding to differences between modified intensity values for a number of pixel locations and one or more thre... | 05/09/2006 |
| 6999201 | Diffusion method using adaptation of diffusion ratio and an apparatus therefor According to the embodiment of the present invention, provided is an image error diffusion method for changing, an error diffusion ratio relative to the each pixel of an image. Further, according to another embodiment of the present invention, in order to generate a... | 02/14/2006 |
| 6995868 | Halftoning algorithm adapted to prevent unaesthetic output A halftoning method and apparatus reduces the occurrence of unaesthetic color print output associated with the different relationships found in the numeric data contained within the color data planes. The calculation, modification and distribution of error values, r... | 02/07/2006 |
| 6995873 | Flexible digital halftoning Apparatus and methods for flexible digital halftoning are provided in which novel pattern choices are allowed by not restricting the basic halftone patterns to grow sequentially. Rather, positions in a threshold array allow multiple transitions between on (i.e., pri... | 02/07/2006 |
| 6995872 | Reduced-buffer error diffusion An error diffusion method is provided where a plurality of n error values derived from processing one or more previous scanlines of input pixel values are sub-sampled without the n error values being stored in a buffer to derive m error values (m | 02/07/2006 |
| 6977663 | Color error diffusion with color bleed control A method for controlling color bleed in relation to a system-invoked halftone color-image process which involves and includes the practice of error diffusion. The proposed method involves (a) selecting a location in the system which is downstream therein relative to... | 12/20/2005 |
