ALLIED Vision Technologies Stingray F-504 - Manual (Page 205)

Controlling image capture
STINGRAY Technical Manual V4.4.4
203
Sequence mode
Generally all AVT Stingray cameras enable certain image settings to be mod-
ified on the fly, e.g. gain and shutter can be changed by the host computer
by writing into the gain and shutter register even while the camera is run-
ning. An uncertainty of up to 3 images remains because normally the host
does not know (especially with external trigger) when the next image will
arrive.
Sequence mode is a different concept where the camera holds a set of dif-
ferent image parameters for a sequence of images. The parameter set is
stored volatile in the camera for each image to be recorded. This sequence
of parameter sets is simply called a sequence. The advantage is that the cam-
era can easily synchronize this parameter set with the images so that no
uncertainty can occur. All AVT Stingray cameras support 32 different
sequence parameters.
Additionally to the sequence mode known from Marlin cameras, the Stingray
cameras have:
• Repeat counter per sequence item
• Incrementing list pointer on input status (on/off)
• Pointer reset (software command; on input pin)
Examples For a sequence of images, each image can be recorded with a different shut-
ter or gain to obtain different brightness effects.
The image area (AOI) of a sequence of images can automatically be modified,
thus creating a panning or sequential split screen effect.
The following registers can be modified to affect the individual steps of the
sequence. Different configurations can be accessed via e.g a footswitch
which is connected to an input.
Mode this registers can be modified...
All modes Cur_V_Mode, Cur_V_Format, ISO_Channel, ISO_Speed, Brightness,
White_Balance (color cameras only), Shutter, Gain, LUT, TestImage,
Image-Mirror, HSNR, Output-Ctrl, ColorCorrection matrix (color cam-
eras only), ISO-Channel, Shading-Ctrl, Sequence-Stepping Mode,
SIS_UserValue
Fixed modes only Cur_V_Frm_Rate
Format_7 only Image_Position (AOI-Top, AOI-Left), Image_Size (AOI-Width, AOI-
Height), Color_Coding_ID*, Binning*, Sub-Sampling*,
Byte_Per_Packet
*hidden in video formats and video modes
Table 72: Registers to be modified within a sequence