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| Number | Title | Issue Date |
| 8274710 | Image processing using count variation Input image data is converted into a brightness component to obtain a difference between the brightness component and a threshold. A count variation is determined based on the obtained difference, and the counter is used to follow up and change the threshold. The th... | 09/25/2012 |
| 8130422 | Image processing device and method thereof An image processing device is provided which comprises an input unit and an analog front end circuit with DC inputs. According to the invention, no capacitor is installed in the input unit and no clamper is installed in the AFE circuit with DC inputs. By appropriate... | 03/06/2012 |
| 7999975 | Analog front-end circuit and electronic instrument An analog front-end circuit includes an analog processing circuit, an A/D converter, a calculation circuit, and a target register in which a black level target value is set. The analog processing circuit includes a clamp circuit that performs a line clamp operation,... | 08/16/2011 |
| 7369149 | Image recording method and image recording device for correcting optical magnification errors An image recording method of recording an image onto an image recording surface by dot patterns by scanning a recording head having recording element units arranged in a direction intersecting a scanning direction, the recording element units having a light source a... | 05/06/2008 |
| 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 |
| 7330600 | Image processing device estimating black character color and ground color according to character-area pixels classified into two classes A character area is extracted from an original image, which is a digital image, according to a feature value calculated with respect to the original image. Pixels belonging to the extracted character area are classified into a first class and a second class accordin... | 02/12/2008 |
| 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 |
| 7262884 | Image processing apparatus and image processing method A white background determination section performs a white background determination on the basis of a white threshold calculated by a white threshold calculation section and an area size selected by an area size determination section. A character discrimination secti... | 08/28/2007 |
| 7263237 | Transformation to increase the Lempel-Ziv compressibility of images with minimal visual distortion A transformation system for increasing the compressibility of digital images. In one embodiment, the pixels of a digital image are examined, one at a time. The color of the examined pixel is compared to that of its neighbors. If the difference in color from either o... | 08/28/2007 |
| 7254283 | Image processor processing image data in parallel with a plurality of processors In order to efficiently process image data in a circuit dividing single image data into a plurality of data and processing the data with a plurality of MPUs in parallel with each other, the MPUs process image data input through an input image data in parallel with e... | 08/07/2007 |
| 7236643 | System and method for filtering and binarization of images in the presence of specular noise In order to render information contained in images more detectable in the presence of noise, the present invention discloses a system and method to binarize the images in the presence of noise. The method of this invention comprises the steps of applying a dynamic r... | 06/26/2007 |
| 7236265 | Image reading apparatus, image forming system, image reading method, and program therefor An image reading apparatus includes an imaging unit which has a plurality of channels and which, for the channels, outputs effective signals output from photo-receiving sections for receiving light from a subject, and optical black signals output from light-shieldin... | 06/26/2007 |
| 7224843 | Apparatus for binary-coding image and method using the same Provided are an apparatus and method for binary-coding images considering the brightness of a current pixel and a difference in brightness between pixels. The apparatus includes a detector for detecting a local adaptive critical value for a pixel according to a regi... | 05/29/2007 |
| 7221790 | Processing for accurate reproduction of symbols and other high-frequency areas in a color image In an image processing apparatus, color image data is binarized, and a symbol area in the color image data is detected. There are obtained, from N colors that form a symbol in the symbol area, M colors that are equal to or smaller than N in number. A symbol cutting ... | 05/22/2007 |
| 7194141 | Image resolution conversion using pixel dropping A system for generating image conversion data is provided. The system includes a numerator buffer storing numerator data of a conversion ratio, such as where the numerator of the ratio represents the relative current size of a set of image data and the denominator o... | 03/20/2007 |
| 7152964 | Very high speed printing using selective deflection droplet separation A method for ink jet printing a plurality of pixels corresponding to a digital image including pixels of image data is taught using a half toning algorithm wherein droplets of two different volumes are formed. The method includes the steps of determining if the prin... | 12/26/2006 |
| 7145693 | Image processing apparatus and method In ink-jet printing apparatuses having a monochrome head which is longer than a color head, if a monochrome image is processed as a color image, the printing speed cannot be improved. Accordingly, the color attribute is determined by pixel based on a luminance signa... | 12/05/2006 |
| 7142325 | Document management device, communications terminal device, document management program, communications control program and document management system A document management device obtains thumbnail information as to a requested document out of an image transmitted via a public network, judges as to whether the thumbnail information is correct with respect to the requested document, and returns the requested docume... | 11/28/2006 |
| 7139105 | Image reading apparatus for optically reading an image An image reading apparatus for optically reading an image comprises an LED for lighting a predetermined region including an object to be read, an image pickup element for receiving reflected light from the predetermined region lit by the LED and outputting an corres... | 11/21/2006 |
| 7062104 | Distortion-adaptive visual frequency weighting The ability of the visual system to detect contrast in an image is a function of the frequency of the contrasting pattern and the distortion of the image. The visual system is more sensitive to contrasting patterns of lower frequency. When the image is significantly... | 06/13/2006 |
| 7062107 | Techniques for generating a distributed low-resolution digital image capable of viewing in any resolution In one embodiment, in a peer-to-peer connected environment, a method of sharing a multi-media object between a first node and a second node is disclosed. At the first node, a digital negative of the multi-media object is stored, wherein the digital negative represen... | 06/13/2006 |
| 7006703 | Content recognizer via probabilistic mirror distribution An implementation of a technology, described herein, for facilitating the recognition of content of digital goods. At least one implementation, described herein, derives a probabilistic mirror distribution of a digital good (e.g., digital image or audio signal). It ... | 02/28/2006 |
| 7006692 | Method, apparatus and computer program product for processing image data An image processing apparatus, method and computer program product, wherein a luminance histogram of input image data is generated by the histogram generating section and a polarization degree of the luminance histogram is evaluated by the polarization degree evalua... | 02/28/2006 |
| 6999619 | Processing for accurate reproduction of symbols and other high-frequency areas in a color image In image processing for accurate reproduction of the color of a high-frequency area, a histogram is calculated that is consonant with an input image, and, based on the histogram, there is calculated a binary threshold value with which a predetermined area in the inp... | 02/14/2006 |
| 6996282 | Encoding apparatus, encoding method, decoding apparatus, decoding method, and record medium Corresponding to the compared results of threshold values of uniformly random numbers supplied from a uniformly random number generator and pixel values of an original picture signal, each pixel value of the original picture signal is encoded. The resultant encoded ... | 02/07/2006 |
| 6996277 | Image type classification using color discreteness features A method and system for classifying images between natural pictures and synthetic graphics is provided. In embodiments of the invention, a picture/graphic classification method and system implements one-dimensional color discreteness features, two-dimensional color ... | 02/07/2006 |
| 6987879 | Method and system for extracting information from images in similar surrounding color Characters or image portions are extracted from a background whose color is similar to that of the characters or the image portions. In order to chromatically isolate the characters and the image portions, a threshold value used for binarization is adjusted as the b... | 01/17/2006 |
| 6973207 | Method and apparatus for inspecting distorted patterns An embodiment of the invention provides a method for training a system to inspect a spatially distorted pattern. A digitized image of an object, including a region of interest, is received. The region of interest is further divided in to a plurality of sub-regions. ... | 12/06/2005 |
| 6965696 | Image processing device for image region discrimination An image processing device of the present invention is provided with four kinds of sub masks in total including two kinds in a main scanning direction and two kinds in a sub scanning direction, in a main mask constituted by a plurality of pixels including a target p... | 11/15/2005 |
| 6956673 | Image processing apparatus and method to reduce gray levels of image An image processing apparatus capable of providing an output image which is close to an actual image observed with human eyes is structured in the following way. An image data from an input unit is supplied from an output unit with a reduced number of gray levels. B... | 10/18/2005 |
| 6950210 | Method and apparatus for adaptively binarizing color document images A method for binarizing an image that includes initializing, for each column of the image, a first set of variables representing a local column low pixel value and a local column high pixel value, and, for each row of the image, a second set of variables representin... | 09/27/2005 |
| 6937361 | Image reading device and method of the same CCD1 as an image reading part reads a copy at the upstream and downstream of reading positions, and image data B and A at each of the reading positions are obtained from an output delay circuit and a shading correction circuit, respectively. A streak detector... | 08/30/2005 |
| 6930800 | Halftone generation system and halftone generation method All threshold data applied to processing is read into a register so that threshold data read from threshold matrix memory can be recycled until the end of a scanning line for processing, and is selectively output to a plurality of comparison means for executing para... | 08/16/2005 |
| 6914701 | Digitizer with improved dynamic range and photometric resolution A digitizer having a dual exposure technique is combined with an associated LUT for each exposure. Each LUT may have a transfer function including a logarithmic operator resulting in a digitized image with improved photometric resolution and increased dynamic range.... | 07/05/2005 |
| 6873729 | Method, apparatus and computer program product for processing image data An image processing apparatus, method and computer program product, wherein a luminance histogram of input image data is generated by the histogram generating section and a polarization degree of the luminance histogram is evaluated by the polarization degree evalua... | 03/29/2005 |
| 6873731 | Image processing method and image processing device The present invention concerns an image processing device and an image processing method for processing a decoded image, and its objective is to optimally binarize a decoded original. After the respective density histograms of colors R, G, and B have been drawn, the... | 03/29/2005 |
| 6822765 | IMAGE PROCESSING APPARATUS FOR DISPLAYING INFORMATION REGARDING FIRST IMAGE PROCESSING MODE AND SECOND IMAGE PROCESSING MODE IN IMAGE PROCESSING ARRANGEMENT HAVING FIRST IMAGE PROCESSING MODE AND SECOND IMAGE PROCESSING MODE, CONTROL METHOD OF IMAGE PROCESSING APPARATUS, AND RECORDING MEDIUM HAVING PROGRAMS After a display on a display unit is changed to a copy stand by screen, until an operation regarding a copy function is performed by use of an operation unit, the apparatus status regarding a facsimile function and the apparatus status regarding the copy function ar... | 11/23/2004 |
| 6751358 | Error diffusion for digital printing A system for simulating grayscales in a digital printer, such as an ink-jet printer, exploits a modified error diffusion technique. When a datum for a particular pixel in an image is 0, the datum is substituted with a low-level artificial datum such as 4 on a scale ... | 06/15/2004 |
| 6744532 | Method for enhancing printing quality A method for enhancing printing quality to process the picture and textual data in an image properly such that both the picture and textual data can be clearly printed. The inventive method can treat the image data to be printed in a real time fashion and while the ... | 06/01/2004 |
| 6721458 | Artifact reduction using adaptive nonlinear filters Adaptive filtering techniques for hardware or software implementation, which selectively use median and low-pass filters to reduce artifacts based on local document features, are disclosed. Specific techniques for low- and high-resolution documents are provided. A f... | 04/13/2004 |
