Advanced Vision Technology (a.v.t.) Ltd.

Advanced Vision Technology Ltd.

Advance Vision Technology (a.v.t.) Ltd.

Noam Noy

Michael D Goldstein

Roy Tenny

Amit Stekel

Yossi Shapira

Shay Gilai

A system for setting up a printing station (), the printing station () includes printing rollers (), the printing rollers () including at least one ink transferring roller () and an impression roller (). The system includes a camera (), an actuator interface () and a processor (), the actuator interface () being coupled with at least one actuator (), the processor () being coupled with the camera () and with the actuator interface (), the actuator interface () directing the at least one actuator () to move at least one printing roller () of the printing press (OO). The processor () receives an output from the camera (), the processor () determining at least one no print threshold respective of each adjacent pair of the printing rollers, according to the output respective of the absence or presence of the representative impression (). In a setup pattern printing zone () of the print material (), the at least one no print threshold is defined as the minimal distance between the rotation axes () of each adjacent pair of the printing rollers, at which no print liquid is transferred to the print material ().

System and method for setting up a printing press

A system detects an object contour with an image acquisition assembly, the object moving relative to the assembly. A line detector scans the surface line by line during a scan cycle, the line being transverse to the relative motion direction. During active periods, a light source emits light synchronized with the scan cycle, allowing the line detector to acquire a first group of at least one lit scan line. A second group of unlit scan line(s) is acquired during non-emitting idle periods. The object passes between the line detector and the light source. A processor receives and analyzes acquired scan lines. For each lit scan line group and a successive second unlit scan line group, the processor identifies a token pattern with a lit segment adjoining an unlit segment. The processor searches the first and second groups for the token pattern ending or reappearing to produce an object contour.

System and method for detecting the contour of an object on a moving conveyor belt

Method for approximating the spectrum of a plurality of color samples, the method including the procedures of measuring the color of a reference color sample in a color space, determining a reference sample estimated spectrum from the measured color, measuring the actual spectrum of the reference color sample, determining a spectral delta from the difference between the reference sample estimated spectrum and the actual spectrum, measuring the color of each of the color samples, for each of the color samples, determining a sample estimated spectrum from the measured color, and for each of the color samples, determining a sample approximated spectrum by adding the spectral delta to the respective sample estimated spectrum.

Method and system for approximating the spectrum of a plurality of color samples

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.

Apparatus and method for reducing shade effects during print quality

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.

System and method for color measurement and control on-press during

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. Whereas, the physical measurements serve for a color based control of the printing process of the printed image.

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Natania, Israel

Noam Noy