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| Number | Title | Issue Date |
| 7940997 | Method and apparatus for enhancing contrast A method of enhancing contrast includes obtaining a first luminance histogram of an input image; generating a second luminance histogram through pixel redistribution for the first luminance histogram; computing a conversion function based on both a first cumulative ... | 05/10/2011 |
| 7613356 | Position and orientation detection method and apparatus The present invention provides a method and apparatus for inputting a signal indicating a change in position of an image sensing apparatus to predict present position and orientation of the image sensing apparatus using previously obtained position and orientation, ... | 11/03/2009 |
| 7414795 | Method for driving display with reduced aging A method of driving a display having a plurality of light-emitting elements that change with time or use, comprising the steps of: a) displaying first and second image signals having spatially distributed pixels divided into a plurality of groups, and forming first ... | 08/19/2008 |
| 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 |
| 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 |
| 7339627 | Method and system for automatic detection and display of aspect ratio Certain embodiments of the invention may be found in a method and system for automatic aspect ratio detection and may comprise scanning lines in at least a selected portion of an image and locating a first reference pixel in one of the scanned lines. A corresponding... | 03/04/2008 |
| 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 |
| 7333672 | Image processing system/network which performs recognition process only upon regions having higher high spatial frequency content An image recognition process applied to a photograph is preceded by a pre-processing step which identifies parts of the image which are in focus. The recognition process is then limited to those parts. The pre-processing typically operates by creating a measure of h... | 02/19/2008 |
| 7321450 | Image processing method, image processing apparatus, and recording medium According to an image processing method for performing color processing in accordance with a plurality of image objects, image data representing the plurality of image objects is input. The relationship between the plurality of image objects is analyzed. The plurali... | 01/22/2008 |
| 7289667 | Method and apparatus for enhancing a digital image by applying an inverse histogram-based pixel mapping function to pixels of the digital image A method and associated device wherein an inverse histogram based pixel mapping step is combined with an edge enhancement step such as unsharp masking. In such an arrangement the inverse histogram based pixel mapping step improves the performance of the unsharp mask... | 10/30/2007 |
| 7221807 | Methods and systems for digital image characteristic adjustment using a neural network Embodiments of the present invention comprise methods and systems for automatically adjusting images to conform to preference data. ... | 05/22/2007 |
| 7167214 | Signal processing unit and liquid crystal display device A signal processing unit in a liquid crystal display device, etc., includes a brightness component appearance frequency measuring unit that measures an appearance frequency of each brightness component in a video signal; a parameter outputting unit that outputs a di... | 01/23/2007 |
| 7149343 | Methods for analyzing defect artifacts to precisely locate corresponding defects Described are methods and systems for providing improved defect detection and analysis using infrared thermography. Test vectors heat features of a device under test to produce thermal characteristics useful in identifying defects. The test vectors are timed to enha... | 12/12/2006 |
| 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 |
| 7120308 | Iterated de-noising for image recovery An image recovery algorithm that recovers completely lost blocks in an image/video frame using spatial information surrounding these blocks. One application focuses on lost regions of pixels containing textures, edges and other image features that pose problems for ... | 10/10/2006 |
| 7116800 | Image segmentation system and method The present invention relates in general to systems used to process images. In particular, the present invention is an image segmentation system and method used to isolate the segmented image of a target person, animal, or object from an ambient image which includes... | 10/03/2006 |
| 7110591 | System and method for recognizing markers on printed circuit boards A system and method for recognizing markers on, e.g., a PCB (printed circuit board). In one aspect, a system for recognizing a marker in an image comprises an image capture module (14) for extracting image features associated with an input image of a ROI (reg... | 09/19/2006 |
| 7088857 | Dynamic bilevel thresholding of digital images In a digital image, for each pixel to be thresholded, a threshold is selected from a set of thresholds. Selection may be based on relative magnitudes of the thresholds. At least one of the thresholds may be dynamic, and one of the thresholds may be constant for at l... | 08/08/2006 |
| 7079702 | Image processing method and apparatus for judging image condition and correcting image An image condition is judged based on a mean value and a standard deviation of a feature quantity of an image, and image correction information in the image condition is created based on the mean value and the standard deviation, to thereby correct the image, based ... | 07/18/2006 |
| 7027637 | Adaptive threshold determination for ball grid array component modeling A method for determining a number of balls in a projection space comprises determining a projection of a portion of a ball grid array, determining at least one local maximum of the projection space for a given threshold, and determining at least a distance between a... | 04/11/2006 |
| 7019756 | Apparatus and method for brightness control A brightness control apparatus comprising a probability density function (PDF) calculator to calculate a PDF based on pixel values of respective pixels of an input image signal, a first setter to set an upper limit value and a lower limit value with respect to the p... | 03/28/2006 |
| 7020332 | Method and apparatus for enhancing a digital image by applying an inverse histogram-based pixel mapping function to pixels of the digital image A method and associated device wherein an inverse histogram based pixel mapping step is combined with an edge enhancement step such as unsharp masking. In such an arrangement the inverse histogram based pixel mapping step improves the performance of the unsharp mask... | 03/28/2006 |
| 7016086 | Image forming apparatus Image data provided from a scanner is simultaneously supplied to page memory and a reference value calculating section. The reference value calculating section creates a density histogram of the document image on the basis of image data corresponding to a predetermi... | 03/21/2006 |
| 7013044 | Image sensing system with histogram modification A histogram is modified by using an adaptive system. Two different thresholds are set: a threshold of a number of pixels which can be changed, and another threshold indicative of a total number of pixels which can be combined together. The thresholds can be adaptive... | 03/14/2006 |
| 7003162 | Apparatus and method for examining images An apparatus for examining printed characters is disclosed. The apparatus includes a database storing standard characters, means for inputting and storing a reference character, means for acquiring an actual image of a printed character, means for calculating a simi... | 02/21/2006 |
| 7003037 | Process, device and use for evaluating coded images A process for evaluating the quality of coded images (e.g., two video sequences) uses a homogeneous motion vector field and psychovisual filtering to take into account Human Visual System (HVS) characteristics to calculate the error between the two video sequences. | 02/21/2006 |
| 6961476 | Autothresholding of noisy images The present invention provides to image processing methods that include a method of selecting an optimal threshold value (to) for an image comprising the steps of: obtaining an image; selecting a test segment of the said image; determining the mean featur... | 11/01/2005 |
| 6933982 | Method and apparatus for fast robust estimation of image noise in a video processing system A method and apparatus for determining an image noise estimate value in a digital video processing system using only a single video image. In the method and apparatus, SAD values in the video image are calculated. For each SAD value, a determination is made as to wh... | 08/23/2005 |
| 6903844 | Image formation apparatus, image formation apparatus control method, and storage medium storing computer-readable program There is disclosed the following constitution in order to accurately perform image area separation judgment by one pixel unit of a read image at a high speed and to form an image in which character sharpness is compatible with photograph gradation without generating... | 06/07/2005 |
| 6771388 | Halftone gradation processing method and apparatus A halftone gradation processing method reduces or eliminates the discontinuous gradation reproduction in comparison with conventional error diffusion. A halftone gradation processing method includes obtaining a position and a pixel value of a target pixel in an inpu... | 08/03/2004 |
| 6415052 | Color image processing apparatus A color image processing apparatus for digitally reading a color document and effecting digital printing comprises a character region extracting device for extracting a character region of the color document; a black portion extracting device for extracti... | 07/02/2002 |
| 6381374 | Histogram analysis method for defective pixel identification A technique is disclosed for identifying potentially defective circuitry associated with discrete pixel regions in an imaging system detector. Signals representative of the pixels in an image matrix are generated. The signals are analyzed to identify mean... | 04/30/2002 |
| 6282325 | Image processing technique for binarizing an image scanned by a shuttle type scanner In an image processing technique for binarizing an image scanned by a shuttle type scanner in a multifunctional machine using a small amount of memory, after scanning pixels of one slice from a document, each pixel of the scanned slice are binarized using... | 08/28/2001 |
| 6266156 | Area judging apparatus The read out image data is stored in the mask memory in a predetermined mask unit, and binarized into binary value with a predetermined threshold in the binarizing circuit. The binarized image data is output to the main scanning direction-black pixel coun... | 07/24/2001 |
| 6212303 | Method and module system for high speed processing of item images A system and method for processing image data from a document and for producing a compressed binarized version of the image data for transmission to or use by subsequent users. Processing of the image data is done in parallel after the scanning of the doc... | 04/03/2001 |
| 6181437 | Image processing apparatus capable of producing images without jaggies at edges Image data for continuous three pixels delayed by one pixel from each other is input in row and column directions from an image input portion into a scanning window. A predetermined image pattern is stored in a count value comparison table for detecting a... | 01/30/2001 |
| 6154573 | Image processing method and image processing device An image processing method and device computes the image quality as an evaluation value, determine the image quality based on this evaluation value, and employ a restoration process in accordance with image quality when this image quality is poor. The ima... | 11/28/2000 |
| 6154568 | Image processing apparatus for processing a bi-level image and method therefor A bi-level image is pre-processed by dividing the image into rectangular blocks, and rearranging the dots in each rectangular block into a pattern determined by the density of black dots in the block. The resulting rearranged image is suitable for further... | 11/28/2000 |
| 6071004 | Non-linear digital filters for interlaced video signals and method thereof A structure and a format for providing a video signal encoder under the MPEG standard are provided. In one embodiment, the video signal interface is provided with a decimator for providing input filtering for the incoming signals. In one embodiment, the c... | 06/06/2000 |
| 6009206 | Companding algorithm to transform an image to a lower bit resolution What is disclosed is a mapping circuit configured to map a range of captured intensity values to a companded intensity level based upon the density of captured intensity values present in the captured image. Also provided is a companding circuit coupled t... | 12/28/1999 |
