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| Number | Title | Issue Date |
| 5054100 | Pixel interpolator with edge sharpening Methods and apparatus for interpolating existing gray-level pixel data to obtain new pixel values during image reduction and enlargement. A quadratic interpolation equation is used to apply location weighting factors to the density values of neighboring p... | 10/01/1991 |
| 5048102 | Multiple interpolation process for image correction A multiple interpolation process for image correction involves the precalculation of interpolation contributions relative to all the possible locations of the points of an elementary mesh. The positions of these locations are determined as a function of a... | 09/10/1991 |
| 5048111 | Hybrid subband-based hierarchical storage and display method for high resolution digital images in a multiuse environment An image processing method is described for the hierarchical storage and display of high resolution digital images in a multiuse environment. The method makes reduced resolution versions of the original image available for quick display on video monitors ... | 09/10/1991 |
| 5048105 | Method and apparatus for enlarging or reducing images From a series of primary image signal components of an image signal representing an image, secondary image signal components, which correspond to an enlarged image or a reduced image and the number of which is different from the number of the primary imag... | 09/10/1991 |
| 5046117 | Image data scaling system An image-data scaling system in which a digital image data is subjected to a desired scale with respect to a main scanning direction to obtain a reduced or enlarged image data. The original image data is sequentially distributed to be sequentially stored ... | 09/03/1991 |
| 5043827 | Combined asynchronous-synchronous document scanner An asynchronous document scanner with one dimensional scanning array, a movable scan carriage supporting the array for scanning movement, a variable interpolator for interpolating partial lines of image signals from the array with preceding lines of image... | 08/27/1991 |
| 4989096 | Producing half-tone images of higher resolution through interpolation of original data A method and apparatus for generating a half-tone version of an image represented by a first set of digital data defining the colour content of abutting pixels of the image at a first resolution. The apparatus comprises a radiation beam generator (8); a r... | 01/29/1991 |
| 4941186 | Method and apparatus for concealing errors which extend over several pixels in a digital video signal A defect location signal such as has been used on television film scanners to show that presence of scratches or dust specks on the scanned film is utilized to show the horizontal extent as well as the position of a defect affecting successive pixels on a... | 07/10/1990 |
| 4924521 | Image processing system and method employing combined black and white and gray scale image data In order to reduce data storage and transmission bandwidth requirements, a high resolution gray scale image is represented in two separate image forms, namely, a high resolution, high sampling density black and white image and a lower resolution, lower sa... | 05/08/1990 |
| 4920571 | Image processing system with capability of enlarging and reducing operations An apparatus for providing high-quality enlarged or reduced image by employing a simple circuit configuration which incorporates an interpolation method. For this purpose, the apparatus is so constituted that the interpolation data is provided to compensa... | 04/24/1990 |
| 4893345 | Method for detecting/processing image information In a photographic printing system, it is necessary to measure the density of an original film to determine its exposure value and to precisely control conveyance/suspension of the original film in order to optimally print the images of each frame. When an... | 01/09/1990 |
| 4885786 | Method for enlarging an image stored in run representation form The method according to the present invention enlarges a binary digital image by a method comprising the steps of: storing the rows of the image as a plurality of run end representations, in which a row is represented as a sequence of values giving the wh... | 12/05/1989 |
| 4853794 | Method and image processing system for reconstruction of an image A method and image processing system is for reconstruction of an input image. The method for reconstruction of an input image includes a step of inputting image data (for example, densities) of at least two pixels nearest to a position of an additional pi... | 08/01/1989 |
| 4850028 | Image processing method and apparatus therefor There is disclosed an image processing apparatus capable of rotation or size change of an image, without lack of pixel data after image processing. For this purpose a destination address is calculated from a source signal, then source addresses are determ... | 07/18/1989 |
| 4833531 | Technique for interpolating a color image for image enlargement or reduction based on look-up tables stored in memory An image processing system capable of image enlargement and reduction. Interpolation data is stored in memory in the form of look-up tables for producing image data interpolating between adjacent pixels. The interpolation is carried out based on a selecti... | 05/23/1989 |
| 4809345 | Method of and apparatus for enlarging/reducing two-dimensional images Method of and apparatus for converting a first two-dimensional image on first column direction and row direction scales to a second two-dimensional image on second column direction and row direction scales at a high speed, in which use is made of the peri... | 02/28/1989 |
| 4789933 | Fractal model based image processing A medical diagnostic apparatus (A) generates medical diagnostic data which is reconstructed by an imager (B) into an electronic image representation. The electronic image representation includes an array of digital pixel values which represent a gray scal... | 12/06/1988 |
| 4776031 | Image reading apparatus An image reading apparatus has CCD line sensors, shift registers, a selector, and an arithmetic unit. Image data lost corresponding to joints in the CCD line sensors is interpolated using image data adjacent the lost data. The interpolation data is obtain... | 10/04/1988 |
| 4774581 | Television picture zoom system A digital video zoom system includes circuitry for writing image samples into a memory at a standard rate and for reading samples from the memory at a reduced rate. Samples are read from the memory under control of a digital accumulator which repeatedly a... | 09/27/1988 |
| 4703353 | Signal interpolators A signal interpolator for time base expanding a portion of an input sample signal of given sample rate by deriving, from the input sample values, interpolated output sample values at that sample rate, the signal interpolator comprising an address generato... | 10/27/1987 |
| 4680720 | Dot interpolation control system A dot interpolation control system according to the invention includes a dot pattern memory storing character pattern data having a predetermined dot matrix format. Dot data of four adjacent dots is obtained from the dot pattern memory. X and Y off-set va... | 07/14/1987 |
| 4680630 | Apparatus for processing digital video signals to produce a television image by line and field sequential scanning An arrangement for rotating television pictures comprises a frame store into which a rotated input picture is written under the control of a write address generator which is in turn controlled by a rotation control and timing generator. A video input sign... | 07/14/1987 |
| 4661987 | Video processor A method and processor for varying the size of a digitized video image in bstantially two video frame times by transforming successive lines of the image along one axis and then transforming successive lines of the image along the other axis.... | 04/28/1987 |
| 4654876 | Digital image motion correction method A method of image motion distortion correction involving the steps of electronically scanning an optical image to produce first and second lines of stored digital pixel data indicative of the intensity of picture elements of the optical image, registering... | 03/31/1987 |
| 4614977 | Still picture signal conversion apparatus capable of trimming operation A still picture signal conversion apparatus converts a still picture signal reproduced in the form of an electric signal from a video tape or disk, still picture video camera or the like to a low-velocity narrow-band signal suited for use in a facsimile s... | 09/30/1986 |
| 4611348 | Apparatus for altering the spatial characteristics of a digital image by polynomial interpretation using sets of arithmetic processors A set of two processors operates on image pixel data using polynomial interpolation to generate pixel data for a spatially varied image. Image data is first stored in a buffer memory, and constants used in the polynomial interpolation are stored in a cons... | 09/09/1986 |
| 4610026 | Method of and apparatus for enlarging/reducing two-dimensional images Method of and apparatus for converting a first two-dimensional image on first column direction and row direction scales to a second two-dimensional image on second column direction and row direction scales at a high speed, in which use is made of the peri... | 09/02/1986 |
| 4587621 | Device for electrical variable magnification of document image A system for altering the size of an image by a desired magnification after optical scanning thereof provides a plurality of output scan values differing in number from the number of sampled scan signals produced during the optical scanning. The output sc... | 05/06/1986 |
| 4578812 | Digital image processing by hardware using cubic convolution interpolation Disclosed is hardware for providing pixel data by interpolation. In the hardware previously memorized weight factors corresponding to the particular site are retrieved under the influence of the outputs of addressing circuits, multiplied with the original... | 03/25/1986 |
| 4571632 | Alternate line interpolation method and apparatus A method and apparatus are provided for data compression in a digital facile document transmission system. In accordance with the method, only alternate scan lines are transmitted, i.e., every other line is deleted in transmission, and at the receiver, t... | 02/18/1986 |
| 4532602 | Device for electrical variable magnification of document image A system for altering the size of an image by a desired magnification after optical scanning thereof provides a plurality of output scan values differing in number from the number of sampled scan signals produced during the optical scanning. The output sc... | 07/30/1985 |
| 4506301 | Multiple mode raster scanner An image input terminal (IIT) with automatic document handler for feeding documents to be scanned into registered position on the IIT platen. The IIT includes a pair of multi-element scanning arrays with cooperating scan lamp and optics on a movable carri... | 03/19/1985 |
| 4428059 | Real time fill circuit There has been provided, a digital circuit for interpolating the intensity values between adjacent pulsed data signals. The interpolation includes, effectively, providing a plurality of shades of gray between adjacent received data. The interpolation data... | 01/24/1984 |
| 4399554 | Method and apparatus for inspecting engine head valve retainer assemblies for missing keys A computer vision system for inspecting engine heads during assembly for missing valve spring assembly keys comprises a solid-state camera for taking pictures of the valve spring assemblies and providing picture data upon command to a computer. The comput... | 08/16/1983 |
| 4396952 | Facsimile transmission apparatus Apparatus for evaluating, characterizing and transmitting facsimile data at an efficiency exceeding one transmission bit per elemental scan area but in such a manner as to avoid the drop-out of data which is relatively close in size to an elemental scan a... | 08/02/1983 |
| 4354243 | Two dimensional interpolation circuit for spatial and shading error corrector systems Data for providing spatial and shading error correction signals during the operating mode of a television camera, are taken from a two dimensional array of correction points distributed across a television image during the camera setup mode and are stored... | 10/12/1982 |
| 4303947 | Image interpolation system Analog image data pixels are sampled and held to produce a box car wave representative of the image data. Wave height differences are bridged by linear interpolation, with frequency enhancement imposed at the bridge junctures. The modified image wave is t... | 12/01/1981 |
| 4179684 | Graphic conversion system for electronic data processing An apparatus and method for graphic conversion for electronic data processing wherein an image is converted to an electrical analog signal which is converted to digital data representing discrete segments of the image containing color value data. The digi... | 12/18/1979 |
| 4029948 | Radiography In an apparatus for displaying representation of body sections derived, for example, from a diagnostic X-ray apparatus a further representation is provided for another body section by interpolation between the derived representations. The data for element... | 06/14/1977 |
| 3974325 | Interpolator for facsimile bandwidth compression In a facsimile transmission device, means for reducing the bandwidth which includes a clock rate halving flip-flop and an odd-even line switching flip-flop which are logically combined to transmit every second data bit in each line in a vertical stagger b... | 08/10/1976 |
