Canon Vb-C50fi - Manual (Page 155)

Creating W
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5-25
GetStillImage Parameters
Parameter Description
z or zoom
Specifies camera zoom. “z” is ten times the zoom ratio of the widest angle, and
“zoom” is the view angle in 0.01
° units (horizontal direction). If this parameter is
omitted, camera zoom is not controlled.
b or back_light
Specifies camera backlight compensation. When this parameter is set to on, the
picture captured will be bright and when this parameter is set to off, the picture
captured will be dark. If this parameter is omitted, camera backlight compensation
is not controlled.
delay
Waiting time until camera focus is stabilized (in milliseconds).
Specified in the range 0 to 10000.
option
Specifies how errors are dealt with. When “skip_on_error” is specified, the process
will be continued. When “quit_on_error” is specified, the process will be aborted.
The following errors can occur: failure to acquire camera control right, loss of
camera control, camera selection errors and camera control errors. To omit, the
default value is “quit_on_error”.
seq
Allows any number (sequence number) to be specified to avoid displaying old
still pictures (numeric value).
v or image_size
S pecifies picture display size. This can be set to 160
Ч 120, 320 Ч 240, and 640
× 480 for NTSC, and 192 Ч 144, 384 Ч 288, and 768 × 576 for PAL. The formats
for specifying “v” and “image_size” are different: “v” specifies the horizontal
dimension only and uses the format “v=640”, for instance, while “image_size”
specifies both horizontal and vertical dimensions and uses the format
“image_size=320
× 240”, for instance.
Distributing Videos Using a Browser Only
Note
If old still pictures are displayed, you can prevent this recurring by specifying a
sequence number in the seq parameter.
* The underlined portion is a sample IP address. Enter the actual IP address set for the VB-C50Fi
(
→ P.3-6).
Displaying Live Video from a Specified Zoom Magnification as Still Pictures
By specifying the camera zoom magnification as a parameter in the HTML code beforehand, you
can display the picture from a specified camera zoom magnification. The example below displays
a still picture shot with the camera panned right by 40
° and tilted down 10°.