Resources Contact Us Home
Pyramid processor integrated circuit

Image Number 6 for United States Patent #5359674.

Multiresolution (pyramid) filtering is useful in image processing. An IC for implementing a variety of multiresolution filters includes a programmable, symmetric, and separable two-dimensional filter. The input signal to the filter can be an input signal applied to the IC or a combination of two such signals. Circuitry in the IC may be programmed to imply pixel values around the edges of the two-dimensional image signals processed by the filter. The filter provides an output signal as well as each of the unfiltered signals from a tapped delay line of a filter that combines successive lines of the image. The IC also includes an arithmetic and logic unit in which the filtered output signal may be combined with an unfiltered input signal or one of the unfiltered tap signals. If the filter is programmed to produce a Gaussian low-pass filtered image, this image, combined with image data from a center one of the filter taps produces a Laplacian function of the original image.

  Recently Added Patents
Flexible quantization
Antitumoral compounds
Apparatus and method for discharging capacitor of input filter of power supply, and power supply including the apparatus
Method and apparatus for triggering expiration of a data tag device
Catalyst composition with nanometer crystallites for slurry hydrocracking
Multi display device and method of controlling the same
Electronic system auto-mute control circuit and control method thereof
  Randomly Featured Patents
Bearing assembly incorporating shield ring precluding erosion
Rubber band powered piston valve aspirator
Square shaped vacuum pouch
Novel vulcanizable rubber compositions and applications thereof
Multi state sensing of NAND memory cells by applying reverse-bias voltage
Optical memory system providing improved focusing control
Apparatus and method for displaying and controlling an annularity-type OSD menu in an image display device
Teleconferencing arrangement
Using geometry bounds to enable scale printing of virtual paper onto physical paper when using a printer with a differing printable area
Method and apparatus for effecting fluid flow measurement in a single sensor