Analog Devices,inc.

Benno Kusstatscher

Gopal Karanam

Boris Lerner

Michael Meyer-Pundsack

Satishchandra G Rao

Robert Bushey

Sreejith Kazhayil

Gokul Muthusamy

Praveen Sanjeev

Gopal Gudhdur Karnam

Gokal Muthusamy

Gopal Gudhur Karnam

An improved algorithm for edge detection is provided that utilizes the second order derivative of the intensity distribution function of an image to provide edge orientation information for the detected edges. An exemplary embodiment of the improved algorithm includes determining the second order derivative of the intensity distribution function, identifying zero-crossings in the horizontal and vertical directions, assigning angle information to the identified zero-crossings in the horizontal and vertical directions; and identifying an edge orientation based the assigned angle information for the horizontal and vertical zero-crossing of the edge and adjacent edges.

Edge orientation for second derivative edge detection methods

A pipelined video pre-processor includes a plurality of configurable image-processing modules. The modules may be configured using direct processor control, DMA access, or both. A block-control list, accessible via DMA, facilitates configuration of the modules in a manner similar to direct processor control. Parameters in the modules may be updated on a frame-by-frame basis.

Dual control of a dynamically reconfigurable pipelined pre-processor

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Munich, Germany

Benno Kusstatscher