Abstract: It is provided a method for conveying data on a flying object in a scene. The method including capturing video frames of the scene by video cameras to get video frames which include image of the object, identifying the object in captured video frames to get associated object parameters, calculating motion variables, solving motion equations for anticipated object trajectory taking into account certain effects, and conveying data to displaying devices. The certain effects are an effect of object collision with a ground surface, air friction, wind effect, and interaction of a spinning object with air. The method may be applied to a ball in a sporting playing field. The cameras may have variable operating parameters desirable for the calculating the motion variables, which may be determined by camera calibration using captured artifacts of the scene. Shadow of the object may be captured as well and be used to provide data absent due to occluding a of the object from a video camera.

Abstract: It is provided a method for conveying data on a flying object in a scene. The method including capturing video frames of the scene by video cameras to get video frames which include image of the object, identifying the object in captured video frames to get associated object parameters, calculating motion variables, solving motion equations for anticipated object trajectory taking into account certain effects, and conveying data to displaying devices. The certain effects are an effect of object collision with a ground surface, air friction, wind effect, and interaction of a spinning object with air. The method may be applied to a ball in a sporting playing field. The cameras may have variable operating parameters desirable for the calculating the motion variables, which may be determined by camera calibration using captured artifacts of the scene. Shadow of the object may be captured as well and be used to provide data absent due to occluding a of the object from a video camera.

Abstract: There is provided herein a method of estimating a channel impulse response, the method includes using an incomplete set of orthogonal frequency division multiplexing (OFDM) symbols to estimate said impulse response. There is further provided a devise and a system which includes a device for digital video channel estimation, the devise includes a channel estimation circuitry adapted to estimate a channel impulse response using an incomplete set of orthogonal frequency division multiplexing (OFDM) symbols to estimate said impulse response.

Abstract: A method for detecting nonlinear distortion over communication channels. The method utilizes moment invariants in determining whether nonlinear distortion exists. The method is particularly applicable to detecting the presence of nonlinear distortion over telephone lines that are used for modem communications. The detection of the presence of nonlinear distortion is important in order that appropriate processing operations be performed which are required in the presence of such distortion. The particular processing operations that are performed in the presence of nonlinear distortion function to improve the reliability of data transfer especially at higher data rates. The nonlinearity distortion is detected by calculating high order moment invariants of the error magnitude present at the input to the slicer stage in the receiver. The method of the invention is effective, in part, because the probability density function of the noise is different, i.e.

Abstract: An apparatus and method for reducing shade effects associated with print quality control, typically generated while viewing or imaging a partly transparent/partly opaque printed material against a light diffusing surface. The reduction in shade effects is by illuminating the printed material from above and viewing or imaging the printed material against a multiple volume light scatterer, thereby redistributing at least part of the light, such that at least part of the scattered light illuminates shaded regions in the image or view obtained.

Abstract: A method for color measurement and control and a color measurement and control system for determining during printing, on-press, the color value of at least one location on a printed substrate. The color measurement and control system includes a camera for acquiring an image of an area of the printed substrate, a color measurement device for measuring a color value of a location of the printed substrate, the color measurement device and the camera are operating substantially simultaneously, and a processing unit for receiving the image captured by the camera and the color measurement and for providing a position of the location with respect to the image employing the image itself. The processing unit is also operative to provide a color value of a desired position, the desired position is selected from the determined position and a position other than the determined position.

Abstract: A method and a device for evaluating a printing process, which can be used for determining a measurement to be exercised for controlling the printing process. The method comprising the steps of calculating a multidimensional data representation of a reference image, and clustering the multidimensional data representation into at least one cluster of data according to at least one multidimensional clustering algorithm. The device comprising calculating means for calculating a multidimensional data representation of a reference image and clustering means for clustering the multidimensional data representation into at least one cluster of data according to at least one multidimensional clustering algorithm. Each of the clusters of data serves for determining at least one feature of measurement of the reference image. The features of measurement serve for selecting at least one type of physical measurement to be performed on a printed image.