C2C-Link
Acquire images from multiple synchronized cameras with CoaXPress
It is interesting to note that quite a number of recent computer vision applications require the acquisition from multiple synchronized cameras. The C2C-Link functionality of Euresys' Coaxlink cards is able to synchronize cameras connected to the same Coaxlink card, to different cards in the same PC and to different cards in distant PCs.
Bild: Euresys SA
Bild: Euresys SAWe are used to acquiring images from multiple parallel line-scan cameras for web inspection applications, or 3D AOI (Automated Optical Inspection), a process that requires the simultaneous acquisition of the components to be inspected from different angles. More recently, a number of 3D, AR (Augmented Reality) and VR (Virtual Reality) applications have pushed the requirements much further. Let's mention for example volumetric video (video that exists in 3D space) and 3D motion tracking for sports and games. These applications require high-resolution, high-frame rate acquisition of video from multiple perfectly synchronized color cameras.
Bild: Euresys SA
Bild: Euresys SA
Bild: Euresys SA
Bild: Euresys SA
Bild: Euresys SATrigger distribution
CoaXPress has a no-jitter, low-latency camera triggering capability. In addition, the C2C-Link functionality of Euresys' Coaxlink cards is able to synchronize cameras connected to the same Coaxlink card, to different cards in the same PC and to different cards in distant PCs. Driven by a master Coaxlink frame grabber, all cameras can be synchronized and operate coherently based on the master's timing. Table 1 shows some examples of configurations.
Bild: Euresys SA
Bild: Euresys SA
Bild: Euresys SAGeneral Purpose I/Os
Multiple general-purpose inputs and outputs are also available in various hardware flavors (TTL, isolated, differential) on Coaxlink frame grabbers. This allows for local synchronization with various types of sensors such as presence detectors, quadrature encoders and strobe lighting systems. In addition, these signals can be processed internally using rate converters, multipliers, dividers, or programmable delays.
Bild: Euresys SAEvent Logging Tool
The Memento Event Logging Tool of Euresys is the best way to verify that the cameras are synchronized as intended. Memento records an accurate log of the events related to all cameras, including triggering. It then generates a graphical representation of time-stamped events on a precise timeline, along with context information.
Bild: Euresys SABild: Euresys SATrigger distribution
CoaXPress has a no-jitter, low-latency camera triggering capability. In addition, the C2C-Link functionality of Euresys' Coaxlink cards is able to synchronize cameras connected to the same Coaxlink card, to different cards in the same PC and to different cards in distant PCs. Driven by a master Coaxlink frame grabber, all cameras can be synchronized and operate coherently based on the master's timing. Table 1 shows some examples of configurations.
Euresys SA
Dieser Artikel erschien in inVISION 4 (September) 2021 - 17.09.21.Für weitere Artikel besuchen Sie www.invision-news.de
