Novell SUSE LINUX Professional 9.3 Update 00662644461625 ユーザーズマニュアル
製品コード
00662644461625
Figure 14.5: DVB Radio
14.6.1
Operation
Connect your camera to the USB port of your computer before starting gqcam.
Then run gqcam. The current picture of your webcam is automatically shown in
the upper part of the application window. The lower part has sliders for adjusting
the brightness, white balance, contrast, tint, and color saturation as needed. The
brightness is automatically preset. This feature can be set in ‘General’ in ‘File’ ➝
‘Preferences’. ‘Filters’ features false color correction switches because some cam-
eras swap the red and blue channels in transmission.
Then run gqcam. The current picture of your webcam is automatically shown in
the upper part of the application window. The lower part has sliders for adjusting
the brightness, white balance, contrast, tint, and color saturation as needed. The
brightness is automatically preset. This feature can be set in ‘General’ in ‘File’ ➝
‘Preferences’. ‘Filters’ features false color correction switches because some cam-
eras swap the red and blue channels in transmission.
If you operate more than one webcam, use ‘File’ ➝ ‘Open New Camera’ to
switch to another camera. Select the new device from the dialog that opens. The
first camera is attached to the device
switch to another camera. Select the new device from the dialog that opens. The
first camera is attached to the device
/dev/video0
, the second is attached to
/dev/video1
, and so on.
14.6.2
Snapshots
To take a snapshot with a camera, click ‘Snap Picture’. Select a filename and pic-
ture format in the dialog that opens. Create a picture series with ‘Camera’ ➝ ‘Set
Timer’. Set the capturing frequency in seconds or minutes along with the proper-
ties of the images in ‘Set image information’. An optional script to run after every
capture event can be chosen with ‘Run command after snap’. This could, for ex-
ample, be used to upload the captured image onto an FTP server.
ture format in the dialog that opens. Create a picture series with ‘Camera’ ➝ ‘Set
Timer’. Set the capturing frequency in seconds or minutes along with the proper-
ties of the images in ‘Set image information’. An optional script to run after every
capture event can be chosen with ‘Run command after snap’. This could, for ex-
ample, be used to upload the captured image onto an FTP server.
14.6.3
Command Line
gqcam can also be run without its graphical user interface. This may be interest-
ing, for instance, for automatic surveillance controlled by a cron job. This requires
ing, for instance, for automatic surveillance controlled by a cron job. This requires
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14.6. Webcam Operation with gqcam