Acquiring Images: Application Notes

This chapter builds on the previous chapter, and describes how to use the Cognex Vision Library to acquire images for particular applications.

This chapter has the following major sections:

Acquiring with Color Cameras describes how to acquire color images.

Acquiring with Line Scan Cameras describes how to set up the acquisition software when using a line scan camera.

Acquiring with Cognex CDC Series Cameras describes how to set up the acquisition software when using a Cognex CDC series camera.

Acquiring with Camera Link Cameras describes how to set up the acquisition software when using a Camera Link camera on an MVS-8600 or MVS-8600e frame grabber.

Acquiring with GigE Vision Cameras describes how to set up the acquisition software when using a GigE Vision camera.

Acquiring from an Imaging Device describes how to set up the acquisition software when using third-party cameras or frame grabbers.

Persistent Camera Enumeration describes how to use Persistent Camera Enumeration, which prevents unexpected changes in camera enumeration. For example, if your application uses ccGigEVisionCamera::get(0) to get a reference to a particular camera, it likely expects to always get a reference to the same camera whenever the application is run. Without PCE in a multi-camera system, if the power supply for that camera fails, then ccGigEVisionCamera::get(0) will return a reference to a different camera. With PCE, cameras will always be enumerated at the same index regardless of the state of other cameras in the system.

Camera-Specific Usage Notes provides information on using certain cameras with CVL.

Frame Grabber Acquisition Usage Notes describes techniques and work arounds specific to a frame grabber or frame grabber family.