imaging and machine vision europe october/november 2011 www.imveurope.com


10


vision award Vision Award 2011


The Vision Award, a prize for applied image processing, will be presented for the 19th time at Vision in Stuttgart. The candidates are detailed below, with the winner receiving €5,000. Warren Clark, publishing director at Imaging and Machine Vision Europe, sponsors of the award, will present the prize during a ceremony on 8 November


New ‘real-time buffered imaging pipeline’ camera architecture keeps cost of machine vision equipment down while applying latest high- speed CMOS image sensors Marcel Dijkema


Adimec Advanced Image Systems


Traditionally machine vision cameras are designed such that the data rate of the image sensor should match with the frame grabber or PC.


But common image data rates will soon exceed 10Gb/s and move up towards 30Gb/s. This means that high performance interface solutions are needed in order to access the full image acquisition potential of these CMOS sensors.


New interface standards like CoaXPress are being developed to handle these speeds, but they do require high-end frame grabbers and matching PCs.


The innovation concerns decoupling the


data stream on the camera interface from the data stream coming from the image sensor. This is done using a new real-time buffered imaging pipeline in the camera. The advantage for vision equipment is that high- speed image acquisition can be combined with low cost, low data rate interfaces. www.adimec.com


Precision Time Protocol IEEE1588 with AVT cameras Paul Kozik Allied Vision Technologies


The Precision Time Protocol (PTP) is a clock


synchronisation protocol used in networking. Supported by IEEE1588, this mechanism


allows multiple devices to align their individual clocks. Allied Vision Technologies has incorporated this capability into its GigE Vision cameras. By adopting an existing standard, the company has enabled the cameras to synchronise their own clocks and other third-party PTP enabled devices. In a multiple camera system, clock


synchronisation between devices is very helpful. Stereo imaging or event logging can be enabled with very high precision and reduced integration effort often eliminating external hardware triggering or additional trigger boards.


PTP was designed to improve on existing clock synchronisation methods such as Network Time Protocol (NTP) and Global Positioning System (GPS). PTP provides microsecond precision without increasing component cost, providing better accuracy than NTP at a lower cost than GPS. www.alliedvisiontec.com


Turn-key EMVA 1288 test equipment Arnaud Darmont Aphesa


Aphesa offers, among other things, camera and sensor measurement services and test


equipment for suppliers to complete their


datasheets with EMVA 1288 data or for customers to benchmark several possible suppliers easily. The test equipment is developed according to the latest version of the standard. The European Machine Vision Association took the initiative of developing a measurement and reporting standard for image sensors and cameras called EMVA


1288. The reason for a new standard was a lack of consistency in datasheets, making comparisons difficult or even impossible. The proposed turn-key test equipment implements the EMVA 1288 standard tests for various types of camera and sensor. The system interfaces with standard cameras like Camera Link, GigE Vision or IIDC/DCAM and is open for additional interfaces. It does not require any third-party equipment or software, comes fully installed and the customer receives complete training about the EMVA 1288 standard and the test equipment. www.aphesa.com


Real-time stereo vision technology for an intraoral 3D scanner Martin Humenberger Austrian Institute of Technology (AIT)


The Austrian Institute of Technology (AIT) has introduced stereo vision for a small intraoral 3D scanner for taking dental


impressions. AIT is providing the technology and Austrian company, a.tron3D, is commercialising it. The proposed scanner enables contact-


free three dimensional scanning of teeth for restoration or similar dental applications. The scanner is based on stereo vision, in which two digital cameras are used to capture a target scene. Each scene point is projected onto the image planes of both cameras. Thus, the projections correspond to each other and can be used to reconstruct the 3D position of the scene point. To determine a complete 3D model of the teeth, all single captured parts are combined. A built-in random pattern projector overcomes the problem of imaging the monotone surfaces of teeth. Once


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