Basler SCOUT LIGHT User Manual download pdf (Page 62)

Image Acquisition Control

54 Basler scout light

6.5 Overlapping Exposure and Sensor

Readout

(All Models Except slA750-60fm)

The image acquisition process on the camera includes two distinct parts. The first part is the

exposure of the pixels in the imaging sensor. Once exposure is complete, the second part of the

process – readout of the pixel values from the sensor – takes place.

In regard to this image acquisition process, there are two common ways for the camera to operate:

with “non-overlapped” exposure and with “overlapped” exposure. In the non-overlapped mode of

operation, each time an image is acquired, the camera completes the entire exposure/readout

process before acquisition of the next image is started. This situation is illustrated in Figure 19.

Fig. 19: Non-overlapped Exposure

While operating in a non-overlapped fashion is perfectly normal and is appropriate for many

situations, it is not the most efficient way to operate the camera in terms of acquisition frame rate.

On this camera, however, it is allowable to begin exposing a new image while a previously acquired

image is being read out. This situation is illustrated in Figure 20 and is known as operating the

camera with “overlapped” exposure.

As you can see, running the camera with readout and exposure overlapped can allow higher

acquisition frame rates because the camera is performing two processes at once.

Note

The information in this section applies to all camera models except the

slA750-60fm fm/fc. For information about slA750-60fm cameras, see Section 6.6

on page 56.

Image Acquisition N

Exposure Readout

Image Acquisition N+1

Exposure Readout

Image Acquisition N+2

Exposure Readout

Time

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Basler SCOUT LIGHT User Manual Page 62