Resumo

DELGADO LEON, David. Hardware design of a video acquisition system based on USB webcam. EAC [online]. 2017, vol.38, n.2, pp.1-11. ISSN 1815-5928.

The design of electronics systems that include digital processing of images, based in USB webcams as element of acquisition, has seen slowed by the complexity associated with USB standards and the diversity of drivers in different camera manufactures. The tendency to standardization of drivers, specifically through the USB Video Class (UVC) and the possibility of design digital systems using reconfigurable hardware, offers the possibility of developing a whole range of applications based on USB webcams. This article presents the design of an image acquisition system based on USB webcam and reconfigurable hardware. This system is designed on Xilinx FPGAs, with an embedded soft-processor like microblaze and the images are captured using a USB webcam with UVC driver support. The software solution has been developed on C language and runs over an operating system like petalinux. Also uses features of petalinux like UVC driver and video4linux2 application program interface. An overview of the system architecture, the results of functional simulations and details related to implementation are provided.

Palavras-chave : petalinux; UVC; video4linux2; microblaze.

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