Cost-effective image acquisition system for precise PC-based measurement

• Autorzy: Pribula O. , Sedivy J. , Fischer J.

Warianty tytułu

PL

System akwizycji obrazu w pomiarach z wykorzystaniem komputera

• Języki publikacji: EN

Abstrakty

EN

Image sensors based on the CMOS technology became commonly used sources of image information in PC-based vision systems. Image information is converted directly on the chip to a stream of synchronous digital data which can be transferred to a PC using the cost-effective interface introduced in this contribution. The CMOS image sensor together with the developed interface can be considered as a simple image acquisition system - USB camera matching all features of distributed image acquisition and processing model described in this article. Concept of the USB camera is enhanced by additional data merged with each image frame transferred to the PC. This feature makes the developed device suitable for tasks where the precise timing of image acquisition together with an external synchronization is required. Based on the VHDL model of the used CMOS image sensor and the designed PC interface with the USB driver, the critical timing and maximal USB data throughput limitations are analyzed and discussed.

PL

Informacja o obrazie z czujnika obrazu typu CMOS jest bezpośrednio przetwarzana w strumień transferowany do komputera. Kamera USB może być traktowana jako system pobierania i przetwarzania informacji. W artkule analizowany jest taki system, a szczególnie timing i szybkość przepływu danych.

Słowa kluczowe

EN

digital image processing; high-speed USB interface; CMOS image sensor; programmable logic device; electrical technology

PL

przetwarzanie obrazu cyfrowe; czujnik obrazu; elektrotechnika

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2011
• Tom: R. 87, nr 7
• Strony: 259--263
• Opis fizyczny: Bibliogr. 12 poz., rys., tab., wykr.

Twórcy

autor

Pribula O.

autor

Sedivy J.

autor

Fischer J.

• Department of Measurement, Faculty of Electrical Engineering, Czech Technical University in Prague,

Bibliografia

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• [8] De Santo, M.; Liguori, C.; Pietrosanto, A., "Uncertainty characterization in image-based measurements: a preliminary discussion", Transactions on Instrumentation and Measurement, Oct 2000, vol.49, no.5, pp.1101-1107, doi: 10.1109/19.872937
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• [10] Kim, Sanghoon; Willett, J. L.; "An optical microscope for the study of biopolymer solutions under shear field," Review of Scientific Instruments, vol.72, no.11, pp.4252-4260, Nov 2001, doi: 10.1063/1.1412263
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