Basler scout GigE, Руководство пользователя, Страница: 337 / 374

AW00011916000 Chunk Features
Basler scout GigE 327
13 Chunk Features
This section provides detailed information about the chunk features available on each camera.
13.1 What are Chunk Features?
In most cases, enabling a camera feature will simply change the behavior of the camera. The Test
Image feature is a good example of this type of camera feature. When the Test Image feature is
enabled, the camera outputs a test image rather than a captured image. This type of feature is
referred to as a "standard" feature.
When certain camera features are enabled, the camera actually develops some sort of information
about each image that it acquires. In these cases, the information is added to each image as a
trailing data "chunk" when the image is transferred to the host PC. Examples of this type of camera
feature are the Frame Counter feature and the Time Stamp feature. When the Frame Counter
feature is enabled, for example, after an image is captured, the camera checks a counter that tracks
the number of images acquired and develops a frame counter stamp for the image. And if the Time
Stamp feature is enabled, the camera creates a time stamp for the image. The frame counter stamp
and the time stamp would be added as "chunks" of trailing data to each image as the image is
transferred from the camera. The features that add chunks to the acquired images are referred to
as “chunk” features.
Before you can use any of the features that add chunks to the image, you must make the chunk
mode active. Making the chunk mode active is described in the next section.