Dalsa Linea HS Series, Руководство пользователя

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Camera Performance and Features
In certain applications, lower image resolution may be acceptable if the desired defect detection
can still be achieved. This accommodation can result in higher scan speeds, as the effective
distance travelled per encoder pulse is increased due to the larger object pixel size. The camera
has a binning feature that produces rapid adjustment to a lower object pixel resolution without
having to change the optics, illumination intensity, or encoder pulse resolution.
Binning is a process whereby adjacent pixels are summed. The camera supports 1x, 2x, and 4x
horizontal binning.
Horizontal binning is achieved by summing adjacent pixels in the same line. Therefore, 2x binning
results in the object pixel doubling in size horizontally. In addition, since adjacent pixels are
summer (not averaged), the image gets brighter. That is, 1x2 and 2x1 are twice as bright, 2x2 is
four times brighter, etc.
Horizontal 2x binning will halve the amount of image data out of the camera. This can be used to
save processing bandwidth in the host and storage space by creating smaller image file sizes.
Figure 14: 2x2 Binning
For the camera, the default binning value is 1 x 1.
Note: The Binning parameters can only be changed when image transfer to the frame grabber is
stopped. Refer to the “Acquisition and Transfer Control’ category in the appendix for details on
stopping and starting the acquisition.
Using Area of Interest (AOIs)
Reduce Image Data & Enhance Performance
See the section Image Format Control Category in Appendix A for GenICam features associated
with this section and how to use them
Related Features: AOI Count, AOI Selector
,
AOI Offset, AOI Width
If the camera’s field of view includes areas that are not needed for inspection (also refer to the
description in the Flat Field Calibration Region of Interest section) then the user may want to
ignore this superfluous image data.