Contents
What is camera triggering?
An image trigger initiates the capture of single or multiple frames of a digital camera by analysing the signals of its sensor. At each triggering event the camera head now sends a frame (or a set of frames) to the host computer to be processed or archived for further use.
What is the difference between hardware trigger interrupts and software trigger interrupts?
Hardware interrupt is an interrupt generated from an external device or hardware. Software interrupt is the interrupt that is generated by any internal system of the computer. Hardware interrupt is triggered by external hardware and is considered one of the ways to communicate with the outside peripherals, hardware.
What can external triggers do for a camera?
Controlling a camera from an external trigger can be very useful. External triggering provides greater timing accuracy, direct control over exposure duration, and remote operation from TTL devices. This is a prime reason I made the Triggerscope controller, so I though it would be useful to explain how this works and what you can do with it.
How can I synchronize / trigger my camera to external signal?
For some cameras, besides the option Frame Start, you can also set the Trigger Selector to start the acquisition of a sequence of images. Trigger source – select which camera I/O line is receiving the external trigger signal. Trigger activation – configure the camera to trigger either on the rising or falling edge of the external trigger signal.
How to config global shutter camera into external trigger mode?
This Application note describe how to config the global shutter camera into external trigger mode, and synchronize the image capture process with external trigger event. Global shutter cameras like Omnivision OV7251, OV9281, OV2311 always have external trigger input signal called FSIN.
Do you need a trigger cable for a new camera?
Although some kits come with for specific cameras, others are generic, and you need specific camera trigger system accessories such as the right trigger cable for your camera. The same applies if you change cameras or own more than one camera.