This tab card is only available if the image source is set to an image
acquisition interface.
The connection parameters are described below.
See the description of the operator open_framegrabber for additional
information about the fields.
Configuration
- Device
- Select the ID of a board, camera, or logical device if multiple devices are
available for the selected image acquisition interface.
Upon building the list of devices, the assistant queries the status of each
device.
Depending on the image acquisition interface, devices may be reported as
misconfigured.
If you select such a device, the assistant may suggest a Generic parameter that potentially resolves the misconfiguration.
If you confirm this suggestion, the parameter will be entered into the
Generic slot (see below).
If a device is labeled with a question mark icon, it is either read-only, busy,
or unknown.
- Port
- Specify the ID of the input port.
- Camera Type
- Select a camera configuration or signal type.
- Select...
- Select a camera configuration file (in XML format) from a file browser.
- Trigger
- Tick the check box if the image acquisition is controlled by an external
trigger.
- Resolution (X / Y)
- Specify the factor for image width / height.
- Color Space
- Specify the configuration for color acquisition.
- Field
- Specify the frame selection for interlaced cameras.
- Bit Depth
- Specify the number of bits used for one image channel.
- Generic
- Some image acquisition interfaces support device-specific parameters
to preset selected values before the camera is initialized.
The parameters the interface claims to support are suggested as a drop-down
list.
To set a generic parameter, select it from the list, and edit the assigned value,
that is, the value after the =.
Multiple generic parameters may be set by separating the entries with a comma.
If the selected image acquisition interface does not support generic parameters,
this field is grayed out.
See the documentation of the individual image acquisition interfaces for more
information about the supported generic parameters.
Action Buttons
When the connection parameters are set up, the action buttons are used to
connect to and acquire images from the specified device.
Messages about connection errors are displayed in the status line of the
image acquisition assistant window.
- Connect
- Connect to the specified image acquisition device.
If the connection fails, carefully check the configuration in the above fields.
Not all combinations of settings are allowed for all devices.
It is recommended that you enable low level error messages (see General
Options ▹ Experienced User) to find out what is going wrong.
Please note that an established connection is closed automatically, if the
connection parameters are modified.
When the connection is established, this button can be used to disconnect
the device.
- Snap
- Acquire a single image from the device (first connecting to the device if
needed).
The image is displayed in the active graphics window unless
Display Image is set to Disabled
(see Inspect).
- Live
- Start/stop live image acquisition mode.
The images are displayed in the active graphics window unless
Display Image is set to Disabled
(see Inspect).
- Detect
- Clicking this button will attempt to redetect valid parameters for the current
device.
- Reset All
- Reset all connection parameters to their default values.