Abstract: A method of operating a radiographic inspection system is designed for a radiographic inspection system in which a conveyor chain with identical modular chain segments transports the articles being inspected. The method encompasses a calibration mode and an inspection mode of the radiographic inspection system. In the calibration mode, calibration data characterizing the radiographic inspection system with the empty conveyor chain are generated and stored as a template image. In the inspection mode, raw images (50) of the articles (3) under inspection with the background (41) of the conveyor chain are acquired and arithmetically merged with the template image. The method results in a clear output image (51) of the articles under inspection being obtained without the interfering background of the conveyor chain.

Abstract: A method of operating a radiographic inspection system is designed for a radiographic inspection system in which a conveyor chain with identical modular chain segments transports the articles being inspected. The method encompasses a calibration mode and an inspection mode of the radiographic inspection system. In the calibration mode, calibration data characterizing the radiographic inspection system with the empty conveyor chain are generated and stored as a template image. In the inspection mode, raw images (50) of the articles (3) under inspection with the background (41) of the conveyor chain are acquired and arithmetically merged with the template image. The method results in a clear output image (51) of the articles under inspection being obtained without the interfering background of the conveyor chain.

Abstract: In an optical measuring system for determining spatial position and orientation of objects, a plurality of measuring points on the object is registered by cameras, laser measuring devices or a combination thereof. For identifying the measuring points, one target of a specific intensity and/or size or a predetermined pattern (3) of a plurality of targets (4) having specific differing intensities and/or sizes is associated with each measuring point. The intensities and/or sizes of the targets are detected in a pixel image of the target (4) by summing up intensities sensed by pixels included in the image of the target. The targets are light emitting devices consuming differing amounts of energy, reflecting, black or white spots of differing diameter or spots of differing shades of gray or other suitable color.

Abstract: In an optical measuring system for e.g. determining spatial position and orientation of objects a plurality of measuring points on the object is registered by cameras, laser measuring devices or a combination thereof. For identifying the measuring points, one target of a specific intensity and/or size or a predetermined pattern (3) of a plurality of targets (4) having specific differing intensities and/or sizes is associated to each measuring point. The intensities and/or sizes of the targets are detected e.g. in a pixel image of the target (4) by summing up intensities sensed by pixels being comprised in the image of the target. The targets are e.g. light emitting means consuming differing amounts of energy, reflecting, black or white spots of differing diameter or spots of differing shades of gray or other suitable color. Three to five grades of intensity and/or size can be realized easily.