Motorola Corporation

General Instrument Corporation

Motorola Mobility LLC

Sek M Chai

Daniel Alan Linzmeier

Malcolm Ryle Dwyer

Nikos Bellas

Zhiyuan Li

Ruei-Sung Lin

Erica M Lau

Boaz J Super

Bruce A Augustine

Bei Tang

Tianli Yu

Russell Mareachen

Nikolaos Bellas

Gregory A Kujawa

Abelardo Lopez Lagunas

Abelardo Lopez-Lagunas

Nikolas Bellas

Linda M Dawson

Russell D Mareachen

A method and apparatus for image processing a lens-distorted image (e.g., a fisheye image) is provided. The method includes partitioning coordinate points in a selected output image into tiles. The output image is an undistorted rendition of a subset of the lens-distorted image. Coordinate points on a border of the tiles in the output image are selected. For each tile, coordinate points in the lens-distorted image corresponding to each selected coordinate point in the output image are calculated. In addition, for each tile, a bounding box on the lens-distorted image is selected. The bounding box includes the calculated coordinates in the lens-distorted image. The bounding boxes are expanded so that they encompass all coordinate points in the lens-distorted image that map to all coordinate points in their respective corresponding tiles. Output pixel values are generated for each tile from pixel values in their corresponding expanded bounding boxes.

Method and apparatus for transforming a non-linear lens-distorted image

An interface () to a video imaging device () that generates captured frames of a video image () is described. The interface includes control registers () that store at least two sets of stream parameters () corresponding to at least two regions of interest (ROIs) and a function () that generates at least two corresponding ROI video streams () that are derived from the captured frames as essentially simultaneous output signals using the at least two sets of stream parameters. In some embodiments a new selection value () is determined from a current selection value and a derivative parameter stored as a portion of a set of stream parameters. In these embodiments, the generating of the at least two corresponding ROI video streams as essentially simultaneous output signals includes using the new selection value.

Interface method and apparatus for video imaging device

Described herein are systems and methods for expanding upon the single-distance-based background denotation to seamlessly replace unwanted image information in a captured image derived from an imaging application so as to account for a selected object's spatial orientation to maintain an image of the selected object in the captured image.

Replacing image information in a captured image

A specification of a configurable processor is generated by generating (1) specifications of first and second stream memory interfaces to be operable to access data in accordance with first and second stream descriptors, and (2) a specification of an interim data storage device (buffer) to be accessed by the first and second stream memory interfaces and to be operable to receive data from a first computational module via the first stream memory interface and to transfer data to a second computational module via the second stream memory interface. The specifications are output and may be used to configure a configurable processor.

Method and apparatus for configuring buffers for streaming data transfer

Memory addresses for a data stream are generated by a stream parameter generator that calculates a set of stream parameters for each of a number of memory access patterns and a regional address generator that calculates a sequence of addresses of a memory access pattern from a corresponding set of stream parameters. The stream parameters, which may include START_ADDRESS, STRIDE, SKIP and SPAN values for example, are updated in accordance with an update( ) function. The update( ) function, which may be defined by a user, defines how stream parameters change from one memory access pattern to the next. In one application, the update( ) function describes how the position, shape and/or size of a region of interest in an image changes or is expected to change.

Method and apparatus for memory address generation using dynamic stream descriptors

A streaming data interface device () of a streaming processing system () is automatically generated by selecting a set of circuit parameters () consistent with a set of circuit constraints and generating () a representation of a candidate memory interface device based upon a set of stream descriptors. The candidate streaming data interface device is evaluated () with respect to one or more quality metrics and the representation of the candidate streaming processor circuit is output () if the candidate memory interface device satisfies a set of processing system constraints and is better in at least one of the one or more quality metrics than other candidate memory interface devices.

Automatic generation of streaming data interface circuit

A content addressable memory (CAM) is disclosed that includes a memory having a first port configured to write a 1-bit data to the memory and a second port configured to read and write N-bit data. To update the CAM, an N-bit zero data word is written to the second port at a first address Ato erase N bits of the memory at address A, then the first address Ais combined with a data value Ato form a second address A. Finally, a value 1 is written to the first data port at the address A. Reading the second port at the first address Awill produce an N-bit data word having value 1 at bit position Aand zeros at all other bit positions. The CAM may be configured in reconfigurable hardware using random access memory and used in a stream data interface circuit.

Apparatus for efficient streaming data access on reconfigurable hardware and method for automatic generation thereof

An alert system is activated in response to an event by positioning a portable electronic device, a cellular telephone or PDA for example, such that a camera of the electronic device is orientated to capture images relating to a visual criterion by which the event is to be detected. Images relating to the visual criterion are processed to detect the event and an alert system is activated if an event is detected. In one application, the portable device is held in a holder in a vehicle and used to detect vehicle lane departure or driver drowsiness.

Vision based alert system using portable device with camera

In one embodiment, a subset of a set of streaming kernels of an application is selected for implementation on a reconfigurable processor. The streaming kernels are selected by first forming a stream flow graph of the application by parsing a program of instructions of the application, the stream flow graph having kernel nodes and edges, and determining benefit and cost values for each kernel node in the stream flow graph. Next, a subset of the kernel nodes that maximizes a weighted sum of the benefits values is selected, subject to a constraint that the sum of cost values is not greater than a prescribed value for the reconfigurable processor.

Streaming kernel selection for reconfigurable processor

Bus transactions in a memory controller are scheduled by storing a set of configuration parameters that define a bus scheduling policy, generating values of a set of dynamic cost functions for each bus transaction, ordering the bus transactions in accordance with the bus scheduling policy to produce ordered bus transactions and generating a memory transaction that is derived from the ordered bus transactions. The memory controller includes one or more control registers for storing the set of configuration parameters, a bus interface operable to capture bus transactions from applications, a set of buffers operable to store the bus transactions and the set of dynamic cost functions and one or more registers operable to store the statistical data and a cost policy. The memory controller selects the order of the bus transactions based on an arbitration and selection policy and generates memory transactions to an external memory.

Dynamic access scheduling memory controller

A streaming processor circuit of a processing system is automatically generated by selecting a set of circuit parameters consistent with a set of circuit constraints and generating a representation of a candidate streaming processor circuit based upon the set of circuit parameters to execute one or more iterations of a computation specified by a streaming data flow graph. The candidate streaming processor circuit is evaluated with respect to one or more quality metrics and the representation of the candidate streaming processor circuit is output if the candidate streaming processor circuit satisfies a set of processing system constraints and is better in at least one of the one or more quality metrics than other candidate streaming processor circuits.

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Streamwood, IL, United States of America

Sek M Chai