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| Number | Title | Issue Date |
| 6341178 | Method and apparatus for lossless precompression of binary images The present invention is a method and apparatus for the lossless precompression and de-precompression of high resolution binary images that are to be stored or transmitted. More specifically, the present invention employs an area-based precompression/de-p... | 01/22/2002 |
| 6266449 | Information processing apparatus and method which selectively controls data encoding by monitoring amount of encoded data The invention provides an information processing apparatus in which data is encoded with a desired compression ratio without producing significant degradation in the quality of the encoded data. The apparatus includes: a monitor for monitoring the amount ... | 07/24/2001 |
| 6266446 | Image conversion between raster and block formats for compression and decompression An image processing apparatus for converting block form image data into raster form image data by using a buffer memory. The apparatus comprises an obtainer for obtaining a number of pixels of given image data in a raster direction, wherein the given imag... | 07/24/2001 |
| 6263114 | Apparatus and method for compressing image data by determining a quantization factor which provides more efficient use of an available bit rate Image data compression apparatus for generating compressed output data to be handled by an output data handling channel having an output data capacity per image comprises a data compressor for compressing image data so as not to exceed a target quantity o... | 07/17/2001 |
| 6252992 | Variable length coding Entered symbols are converted by a code ID table to code IDs numbered in order of increasing code length. Code IDs outputted by the code ID table are replaced by means of an ID conversion table, after which the outputted codes are delivered to a code tabl... | 06/26/2001 |
| 6249612 | Device and method for image coding The invention relates to a device and method for image coding. A reference frame memory for storing image data of a reference frame, a search memory for storing image data of a search frame, a motion detection means for reading image data from the referen... | 06/19/2001 |
| 6240204 | Image data conversion on the basis of observation light of an output image An image processing apparatus performs a conversion process according to observation environment light of an output image. The apparatus includes a conversion processor for performing a conversion process on image data, on the basis of light source inform... | 05/29/2001 |
| 6236758 | Apparatus and method for encoding wavelet trees by backward predictive coding of wavelet transformed coefficients An apparatus and a concomitant method is disclosed for encoding wavelet trees in a wavelet-based coding technique using backward predictive coding of wavelet transformed coefficients, which addresses both balanced and unbalanced wavelet trees and increase... | 05/22/2001 |
| 6226402 | Ruled line extracting apparatus for extracting ruled line from normal document image and method thereof A ruled line extracting apparatus obtains circumscribed rectangles of pixel concatenation regions included in an input pattern, and calculates the most frequent value of their heights. Additionally, the apparatus integrates segments by ignoring a wild car... | 05/01/2001 |
| 6226414 | Image encoding and decoding method and apparatus using edge synthesis and inverse wavelet transform A digitized image is encoded by detecting edges in the image, encoding the position and sharpness of the detected edges, filtering the image by a low-pass filter to generate a low-frequency image, and encoding the low-frequency image. A digitized image en... | 05/01/2001 |
| 6219450 | Blocking signature detection for identification JPEG images A method detects if an image is compressed. The method determines a block grid within the image and establishes blocks from the determined grid. The method then computes differences between samples inside the established blocks and differences between sam... | 04/17/2001 |
| 6219459 | Image transform device for transforming a picture image to a painting-type image A low cost image transform device capable of converting an input image to the linear drawing style in real time is presented. An edge signal of the input image is detected and normalized. The normalized edge signal is then non-linear transformed to decrea... | 04/17/2001 |
| 6215908 | Symmetric filtering based VLSI architecture for image compression An apparatus to perform symmetric filtering image compression is provided. The apparatus includes an N-element shift circuit, that has N shifting blocks (SB), to store and shift data elements. Each data element represents a pixel of an image. The apparatu... | 04/10/2001 |
| 6215904 | Apparatus and method for selecting encoding schemes based upon image content An image scanner apparatus scans a document and provides image data in digital form representing the scanned document. The compression apparatus detects characteristics of the image data and compresses the image data using parallel compressors, each emplo... | 04/10/2001 |
| 6215899 | Motion and disparity estimation method, image synthesis method, and apparatus for implementing same methods An image computing and processing apparatus for computing correspondence between images from a plurality of images and for obtaining disparity corresponding to the depth of an image. Also, an apparatus for synthesizing from the disparity and image data an... | 04/10/2001 |
| 6215901 | Pen based computer handwriting instruction A method and system for performing instruction of handwriting skills by animated display of the required stroke motions with simultaneous audio verbal description of these same motions, including the means for a student to practice this lesson with use of... | 04/10/2001 |
| 6212285 | Method and apparatus for multi-bit zoned data hiding in printed images A technique for embedding a tracking number as a series of bits in a printed image alters characteristic parameter values at a set of pseudo-random locations chosen for each bit in an embedding zone. The alteration markedly changes the expectation value o... | 04/03/2001 |
| 6208754 | Image compression and expansion device using pixel offset The image compression and expansion device handles red (R), green (G) and blue (B) image data, which are offset horizontally to each other by one-third of one pixel, for example. The R, G and B image data are converted to a luminance signal and color diff... | 03/27/2001 |
| 6205252 | Two channel HVQ (hierarchical vector quantization) compression A compression process of dividing each word to be compressed into least and most significant bits, and applying a different compression ratio to each. If the compression processes are lossy, both parts of the output can also be losslessly compressed befor... | 03/20/2001 |
| 6205254 | Image coding apparatus and method, and image decoding apparatus and method An image coding apparatus and method efficiently compresses a variety of images by a lossless or near-lossless coding, and an image decoding apparatus and method decodes code data encoded by the image coding apparatus and method. A windowing unit determin... | 03/20/2001 |
| 6195463 | Multiresolution image processing and storage on a single chip The present invention relates to a storage device by which image data is hierarchically encoded and stored, and to a technique for reducing the size of the device and increasing processing speed. Size reduction and increased processing speed are realized ... | 02/27/2001 |
| 6192157 | Modifications of postscript adaptive data compression (ADC) for 3 plane, 8 bit color images, JPEG lossy compression, and variable Q factors An image compression system includes a source, a memory, a personality/graphics engine having a personality and a graphics engine, a memory allocator and an image processor. The source is operative to supply digital data representative of images. The memo... | 02/20/2001 |
| 6188786 | Image processing apparatus that determines an area in an image based on color information An image processing apparatus including a color-information obtaining device which obtains color information relating to a color of a target-area picture-element group consisting of a plurality of picture elements belonging to a target area as one of a pl... | 02/13/2001 |
| 6185324 | Semiconductor failure analysis system A semiconductor failure analysis system which includes a failure information collection unit for collecting, by bit, failure information concerned with a failure of a semiconductor, an inspection unit for examining relations between various types of inspe... | 02/06/2001 |
| 6175649 | Image scanning apparatus, method of scanning images, and recording medium for realizing the method An image scanning technique of the present invention shortens the time required for reading images of a plurality of originals set on an original tray. The positions of a lens 18 and a line of CCDs 20 are adjusted, so as to enable a scanning range of the ... | 01/16/2001 |
| 6169819 | High performance surface normal compression A high performance method for the compression of floating point format surface normals and the inverse method for the decompression of those compressed surface normals. Each of the three vector components of the surface normal is compressed by subtracting... | 01/02/2001 |
| 6167161 | Lossless transform coding system having compatibility with lossy coding A reversible eight-element discrete cosine transform coding system which provides transform values near to transform values of the original eight-element discrete cosine transform. In a 4×4 matrix transform which appears when an eight-element discrete co... | 12/26/2000 |
| 6157746 | Apparatus and method for encoding wavelet trees generated by a wavelet-based coding method An apparatus and a concomitant method is disclosed for encoding wavelet trees in a wavelet-based coding technique, which addresses both balanced and unbalanced wavelet trees and increases the overall coding efficiency.... | 12/05/2000 |
| 6151413 | Method of coding an arbitrary shape of an object when all pixels of an entire region of a display are used as texture for the object A method of coding an object of an arbitrary shape. The arbitrary shape coding method includes the steps of: (a) determining whether or not a shape in a video object layer (VOL) is an arbitrary shape; (b) calculating the size of a video object plane (VOP)... | 11/21/2000 |
| 6151408 | Method for separating a desired pattern region from a color image In a method for separating a desired color region from a color image, color component values, which represent color components of the image, are calculated. Energy minimization is then carried out, in which calculations of an update rule for minimizing en... | 11/21/2000 |
| 6141446 | Compression and decompression system with reversible wavelets and lossy reconstruction A method and apparatus for encoding and decoding data that includes generating transformed signals in response to input data. In one embodiment, the transformed signals are generated using a reversible wavelet transform. The present invention also include... | 10/31/2000 |
| 6137912 | Method of multichannel data compression A method for compressing multiple channels of data using an MPEG-compatible motion estimation technique. The method determines the differences between frames within each channel and among the channels and encodes those differences. To facilitate compressi... | 10/24/2000 |
| 6137589 | Efficient storage of dithered raster image data in a printer or the like Already stored uncompressed raster data are selectively compressed before any new raster data can be processed and stored. Both compressed and uncompressed raster data is preferably stored in the same size blocks, and the Raster Objects are preferably div... | 10/24/2000 |
| 6128416 | Image composing technique for optimally composing a single image from a plurality of digital images The present invention discloses an image composing apparatus comprising a reference block setting circuit for setting a search area having a stored arbitrary size in an overlap region of composed image data which has been picked up, for setting a first re... | 10/03/2000 |
| 6118900 | Image coding device and image decoding device for use with image disassembly Disclosed herein are easy-to-realize multivalued image coding and decoding devices, each of which is capable of reducing memories in number while the accuracy of calculations necessary upon coding and decoding is being held and relaxing a probability esti... | 09/12/2000 |
| 6118899 | Method for lossless bandwidth compression of a series of glyphs A lossless bandwidth compression method for use in a distributed processor system for communicating graphical text data from a remote application server to a user workstation over a low bandwidth transport mechanism enables the workstation display to supp... | 09/12/2000 |
| 6115507 | Method and apparatus for upscaling video images in a graphics controller chip A display controller to upscale a source video image for display on a display unit of a computer system. An encoder circuit in the display controller chip stores in a local memory pixel data of previous scan lines required for interpolation in a compresse... | 09/05/2000 |
| 6104841 | Method and apparatus for reading and processing an image at a rate determined by the magnification to be applied to the image An image is read by moving a line sensor relative to the image in a subsidiary scanning direction perpendicular to the direction of a pixels array of the line sensor. An image processor receives image signals from the sensor and produces an output image m... | 08/15/2000 |
| 6097852 | Image forming apparatus and method with modes for copying an entire extent of a document and an extent except for edge portions A digital full-color copying machine (1) has a full-size mode for copying the entire extent of an original document (210) and a normal mode for copying the original document except for peripheral edge portions. When the normal mode is selected, the origin... | 08/01/2000 |
| 6097846 | Image processing device with inverse quantization and two dimensional inverse discrete cosine transformation Quantized DCT coefficients Rvu are inputted to a pre-processing unit, in which pre-processed DCT coefficients are obtained by multiplying a quantization/multiplying-term table and the quantized DCT coefficients. The quantization/multiplying-term table are... | 08/01/2000 |
