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| Number | Title | Issue Date |
| 4885787 | High-speed digital image processing apparatus An image processing apparatus is provided which is capable of real time image processing, especially filtering, without generating a delay in a frame memory. A cascade filtering circuit filters digital video signals obtained by digitally converting analog... | 12/05/1989 |
| 4876729 | Method of identifying objects In a method of identifying an object of the type wherein the object is photographed by a television camera, and a portion of the contour line of the object is detected by a photographed picture image, the picture image is scanned by a filter for designati... | 10/24/1989 |
| 4831447 | Method and apparatus for anti-aliasing an image boundary during video special effects A method of processing a foreground array of sample values, a background array of sample values and a crop array of sample values, which three arrays are coextensive and wherein the crop array represents a geometrical figure associated with a non-zero mul... | 05/16/1989 |
| 4807297 | Neighbor image processing device A neighbor image processing device for processing image data according to predetermined program comprises: an address generator for simultaneously generating addresses corresponding to each of a central point and a plurality of individual neighbor points ... | 02/21/1989 |
| 4805129 | Two-dimensional finite impulse response filter arrangements A two-dimensional finite impulse response filter arrangement for filtering a signal which represents an image and which comprises a sequence of digital words comprises a two-dimensional finite impulse response filter operative during each of a plurality o... | 02/14/1989 |
| 4805226 | Image processing apparatus Apparatus for processing images which have been sampled on a rectangular grid and which have been binary digitized with one bit per pixel, each pixel being considered in relation to at least some of the eight surrounding pixels in the rectangular grid. Th... | 02/14/1989 |
| 4802110 | Two-dimensional finite impulse response filter arrangements A two-dimensional finite impulse response (2D-FIR) filter arrangement includes a 2D-FIR filter (26,30,32,34) operative during each of successive clock periods equal to T (where T is the spacing of digital samples or words of an image signal) to effect fil... | 01/31/1989 |
| 4792231 | Laser speckle imaging Satellite imaging through a turbulent atmosphere is provided at better than turbulence-limited resolution using laser speckle statistics on reflections of orthogonal spatially periodic illumination patterns. The second harmonic of a covariance function of... | 12/20/1988 |
| 4789901 | Digital reading device for facsimile apparatus The line of a document is focused onto a series of reading elements, such as the cells of a charge coupled device, from which a serial output signal is obtained and applied to an analogue-to-digital converter. In order to compensate for the fall-off in th... | 12/06/1988 |
| 4776025 | Neighbor image processing exclusive memory A neighbor image processing exclusive memory device comprises a data input/output device for supplying and receiving image data; a plurality of memory blocks coupled to the data input/output device for receiving, storing and transmitting neighbor image da... | 10/04/1988 |
| 4769850 | Pattern recognition system The present invention relates to apparatus for separately extracting circular and linear components in a complex image, the apparatus comprising: (a) a circular filter means for covering a portion of the complex image by filter blocks, wherein the filter ... | 09/06/1988 |
| 4760541 | Two dimensional digital spatial filter for enhancement of point sources A point source spatial filter determines the quality of a central point source or pixel under test to thereby detect point sources and minimize the signals from all sources other than the desired point source. The spatial filter incorporates a buffer appa... | 07/26/1988 |
| 4750209 | System for processing an image having both letter and photographic information An image processing system processes a composite original image having both of letter and picture information to have the letter information extracted. An image signal in the form of pixel is checked to see if it is a letter pixel, in which case "1" is as... | 06/07/1988 |
| 4736448 | Spatial filter A spatial filter has a plurality of uniformly weighting spatial filters for defining as pixel data of a given pixel a value corresponding to a sum of pixel data in a predetermined square area near the given pixel. The characteristics of these uniformly we... | 04/05/1988 |
| 4709395 | Method and apparatus for minimizing errors in the digital processing of electrical signals A method and apparatus for minimizing errors in digital processing of electrical signals whereby a digital input signal is divided into a digital useful signal having a lower resolution than the input signal and into a digital error signal having lower re... | 11/24/1987 |
| 4694342 | Spatial filter useful for removing noise from video images and for preserving detail therein Apparatus for a spatial filter that can function both recursively and non-recursively for removing noise from video images while substantially preserving fine detail, and a method for use therein are disclosed. Specifically, a look up table stores pre-def... | 09/15/1987 |
| 4692892 | Parallel analog device for the local processing of a bidimensional signal An analog parallel device for the local processing of a bidimensional signal comprises an input means, a processing means and an output means, the input means receiving the bidimensional signal and supplying, on a group of elementary input points organize... | 09/08/1987 |
| 4682301 | Digital filter for processing two-dimensional digital image Digital filters can be very effectively used for filtration of two-dimensional image. A special one of the digital filters operates to add together all data over a filter length, multiply the addition result by a predetermined set value, and to effect add... | 07/21/1987 |
| 4674045 | Filter for data processing An imaging method and apparatus having a new and improved data filter. In one application of the invention computed tomography number inaccuracies are avoided by use of a new filter function derived from discrete points of a truncated spatial domain convo... | 06/16/1987 |
| 4637059 | Video filter for video format unit A video filter is provided for use in an image processing system wherein correlated video data is received by the video filter in a cellular format. The filter includes structure for simultaneously filtering at least four cells of the correlated video dat... | 01/13/1987 |
| 4633504 | Automatic photomask inspection system having image enhancement means Optical inspection apparatus for detecting defects in a visually perceptible pattern including image acquistion means for inspecting the pattern on a pixel-by-pixel basis, developing digital data signals corresponding to each pixel and feeding the signals... | 12/30/1986 |
| 4613986 | Digital filter for enhancement of document images An apparatus and method for scanning a document image in an m×n matrix. The device includes a sensing array for sequentially sensing along a scan line, elements along one dimension of the matrix, registers for sequentially storing sensed elements for a s... | 09/23/1986 |
| 4602285 | System and method for transforming and filtering a video image A video transformation and filtering system generates for each source image data point a plurality of target image addresses indicating a displacement between a point at which the source image data point maps into the target image and each data point of t... | 07/22/1986 |
| 4574357 | Real time character thinning system A system for providing a video output signal representing a thinned image from digitized video input signals representing discrete picture elements (pixels) of a scanned image, comprising convolver means for identifying those pixels which are to be retain... | 03/04/1986 |
| 4541116 | Neighborhood image processing stage for implementing filtering operations A neighborhood transformation stage is designed to perform filtering operations on an image matrix. A group of pixel values in the image matrix are accessed. A series of comparators are used to compare the values of neighboring pixels with the value of a ... | 09/10/1985 |
| 4536803 | Method and apparatus for intensifying contrast in printing formats A method and apparatus for intensifying contrast during the recording of masters in electronic image processing wherein a master is scanned opto-electronically and an image signal is produced as well as two unsharp masking signals by scanning a first unsh... | 08/20/1985 |
| 4509195 | Process and device for the binarization of a pattern The device of the invention allows the binarized evaluation of a pattern from a signal indicative of intensity values of spatially distributed discrete points of the pattern. It comprises circuits for registering the intensity values of points distributed... | 04/02/1985 |
| 4467354 | Video format unit In high speed imaging systems wherein document images are lifted and stored, it is desirable to reduce the amount of information to be stored. A video format unit utilizing video information from a data lift enhances the video information and then compres... | 08/21/1984 |
| 4350998 | Device for differential image determination A real-time image processing device having only one image memory. Consecutive images are sequentially fed in digital form to a recursive filter. The memory is employed in the recursive filter as a "delay element", as result of which noise integration and ... | 09/21/1982 |
| 4328426 | Filter for image pixels A separable two dimensional Finite Impulse Response (FIR) digital image processing filter with X-dimension filter section having a delay buffer series to which digitized image signals or pixels are first input. The buffer inputs and output are tapped and ... | 05/04/1982 |
| 4292622 | System and method for processing horizontal line characteristics in an image A system for processing digitized scan data representative of an image including at least one line of symbols. The system processes the scan data to identify bits including at least one line of symbols representative of horizontal line segments in the ima... | 09/29/1981 |
| 4194221 | Automatic multimode continuous halftone line copy reproduction An image data handling system to automatically detect and segregate from a stream of image pixels high frequency half-tone image input, continuous tone image input, low frequency half-tone image input, and line image input which may be present in the pixe... | 03/18/1980 |
