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5041912 |
Averaging array for CCD imagers
In the present invention, a method is set forth for the generation of an average signal for the pels of a neighborhood, i.e., a matrix array, without corrupting individual pel values. The system...
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4956873 |
Image processing apparatus
In order to correct the swathe related banding effect often seen on swathe-scanned imagers a vertical smoothing function separates out artifact detail from the idealized image and derives, from...
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4933978 |
Method and apparatus for determining the value of a sample in the mth position of an ordered list of a plurality of samples
A method and apparatus for determining the value of a sample having a particular position in an ordered ranking, by magnitude, of a set of digital samples includes means for truncating the lesser...
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4827533 |
Method of smoothing image signals
A method of smoothing image signals comprises the step of replacing an original image signal at each of the several picture elements of a two-dimensional image by a median value of the image...
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4817175 |
Video stream processing system
A video stream processing system comprising a novel modular family of image processing and pattern recognition submodules, the submodules utilize a unique system signalling and interface protocol,...
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4800511 |
Method of smoothing image data
Original image data items a 1 , a 2 , . . . a N with respect to a horizontal or vertical row of pixels in a two-dimensional image are obtained and then smoothed by converting a n to a' n which...
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4782389 |
Adaptive M-tile sample producer
Apparatus is disclosed for adaptively producing a sample having a desired M-tile value, and includes a source of a set of input samples and a source of a control signal. Means are provided for...
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4747052 |
Radiation image processing
A method and apparatus for image processing on a radiation image which may be a conventional radiographic image on X-ray film or a radiation image which is stored in a stimulable phosphor and read...
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4736439 |
Image preprocessing by modified median filter
Preprocessing of a noisy image, such as is obtained by a raster scan, by tracting the median of the pixel values of one or more lines from the medians of predetermined pixel neighborhoods.
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4603430 |
Target discrimination utilizing median filters
Apparatus for processing applied signals indicative of an image scene in order to provide output signals representative of objects in the scene whose sizes are within a predetermined size range....
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4560974 |
Real-time ordinal-value filter utilizing reference-function comparison
Operating at real-time data rates, the disclosed hardware network generates a signal which closely approximates the Mth-largest of a set of R input data signals. The operational basis of this...
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4513440 |
Hardware median filter
A hardware median filter, particularly useful for processing high resolutions imagery data is coupled to a set of line buffers to which pixel data for an image of interest is applied, to define a...
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4456968 |
Real-time ordinal-value filter utilizing half-interval ranking
A hardware logic network, operating at real-time data rates, generates a signal which matches the Mth-largest signal of an input data set. To accomplish this signal-matching, the network utilizes...
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3964021 |
Preprocessing system and method for pattern enhancement
There is disclosed embodiments of a preprocessing system and method for enhancing a pattern in a spatially-modulated scene. First, the scene is filtered by a spatial band-pass filter which...
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