Patent application number | Description | Published |
20090231327 | METHOD FOR VISUALIZATION OF POINT CLOUD DATA - Method for providing a color representation of three-dimensional range data ( | 09-17-2009 |
20090232355 | REGISTRATION OF 3D POINT CLOUD DATA USING EIGENANALYSIS | 09-17-2009 |
20090232388 | REGISTRATION OF 3D POINT CLOUD DATA BY CREATION OF FILTERED DENSITY IMAGES | 09-17-2009 |
20100086220 | IMAGE REGISTRATION USING ROTATION TOLERANT CORRELATION METHOD - A method for correlating or finding similarity between two data sets. The method can be used for correlating two images with common scene content in order to find correspondence points between the data sets. These correspondence points then can be used to find the transformation parameters which when applied to image | 04-08-2010 |
20100123618 | CLOSED LOOP PHASE CONTROL BETWEEN DISTANT POINTS - Methods for compensating for phase shifts of a communication signal. The methods involve determining a first reference signal (V | 05-20-2010 |
20100123624 | SYSTEMS AND METHODS FOR DETERMINING ELEMENT PHASE CENTER LOCATIONS FOR AN ARRAY OF ANTENNA ELEMENTS - A method for operating a communications system is provided. The method includes receiving a plurality of signals at a plurality of antenna elements, the plurality of signals arriving at the array of antenna elements at a plurality of angles of arrival (AOAs) with respect to a reference location. The method also includes calculating a plurality of differential distance vectors between the plurality of antenna elements and the reference location, each of the plurality of differential distance vectors associated with one of the plurality of AOAs and at least one of the pluralities of signals. The method further includes obtaining a plurality of actual phase center locations for the plurality of antenna elements based on the plurality of differential distance vectors and the plurality of AOAs and providing a correction to configuration data for the array of antenna elements based at least on the plurality of actual phase center locations. | 05-20-2010 |
20100123625 | COMPENSATION OF BEAMFORMING ERRORS IN A COMMUNICATIONS SYSTEM HAVING WIDELY SPACED ANTENNA ELEMENTS - Systems and methods for operating a communications system. The methods involve computing one or more complex weights to be applied to transmit signals and receive signals by beamformers. The complex weights are based at least on configuration data for the communications system. The methods also involve applying a first plurality of weight corrections to the complex weights based on phasing errors occurring in a communication path inclusive of a control system and antenna elements. The methods further involve applying a second plurality of weight corrections to the complex weights based on phase differences at the antenna elements relative to a reference location for the receive signals. | 05-20-2010 |
20100124895 | SYSTEMS AND METHODS FOR COMPENSATING FOR TRANSMISSION PHASING ERRORS IN A COMMUNICATIONS SYSTEM USING A RECEIVE SIGNAL - A method for correcting transmission phasing errors in an plurality of antenna elements is provided. The method includes receiving at least a first signal having a first frequency at the plurality of antenna elements at an angle of arrival (AOA). The method also includes identifying an actual fractional wavelength value (f | 05-20-2010 |
20100125347 | MODEL-BASED SYSTEM CALIBRATION FOR CONTROL SYSTEMS - A system and method for model-based control of a the physical system, based on a computer simulation model approximating operating characteristics of at least a portion of the plurality of components and having one or more model parameters for adjusting a modeled operating characteristic of at least one of the plurality of components is provided. In the system and method at least one active input parameter for the physical system is generated based on current values for the model parameters and the computer simulation model and at least one measured system parameter value and at least one modeled system parameter value are obtained for measuring the performance of physical system responding to the active input parameter. The system and method also evaluate a difference between the measured system parameter value and the modeled system parameter value and update the current values for the model parameters to minimize the difference. | 05-20-2010 |
20100207936 | FUSION OF A 2D ELECTRO-OPTICAL IMAGE AND 3D POINT CLOUD DATA FOR SCENE INTERPRETATION AND REGISTRATION PERFORMANCE ASSESSMENT - Method and system for combining a 2D image with a 3D point cloud for improved visualization of a common scene as well as interpretation of the success of the registration process. The resulting fused data contains the combined information from the original 3D point cloud and the information from the 2D image. The original 3D point cloud data is color coded in accordance with a color map tagging process. By fusing data from different sensors, the resulting scene has several useful attributes relating to battle space awareness, target identification, change detection within a rendered scene, and determination of registration success. | 08-19-2010 |
20100208981 | Method for visualization of point cloud data based on scene content - Systems and methods for associating color with spatial data are provided. In the system and method, a scene tag is selected for a portion | 08-19-2010 |
20100209013 | REGISTRATION OF 3D POINT CLOUD DATA TO 2D ELECTRO-OPTICAL IMAGE DATA - Method and system for registration of a two dimensional image data set and a three-dimensional image comprising point cloud data. The method begins by cropping a three-dimensional volume of point cloud data comprising a three-dimensional image data to remove a portion of the point cloud data comprising a ground surface within a scene, and dividing the three-dimensional volume into a plurality of m sub-volumes. Thereafter, the method continues by edge-enhancing a two-dimensional image data. Then, for each qualifying sub-volume, creating a filtered density image, calculating a two-dimensional correlation surface based on the filtered density image and the two-dimensional image data that has been edge enhanced, finding a peak of the two-dimensional correlation surface, determining a corresponding location of the peak within the two-dimensional image, defining a correspondence point set; and storing the correspondence point set in a point set list. Finally, a transformation is determined that minimizes the error between a plurality of the correspondence point sets contained in the point set list. | 08-19-2010 |
20110115812 | METHOD FOR COLORIZATION OF POINT CLOUD DATA BASED ON RADIOMETRIC IMAGERY - Systems and methods for improving visualization and interpretation of spatial data of a location are provided. In the method, a first radiometric image and three-dimensional (3-D) point cloud data registered ( | 05-19-2011 |
20110200249 | SURFACE DETECTION IN IMAGES BASED ON SPATIAL DATA - A system and method are provided for detecting surfaces in image data based on spatial data. The method includes obtaining an empirical probability density function (PDF) for the spatial data, where the spatial data includes a plurality of three-dimensional ( | 08-18-2011 |