User`s guide

peekdata
17-65
peekdata
Most recently acquired image data
Syntax
data = peekdata(obj,frames)
Description
data = peekdata(obj,frames) returns data containing the latest number of frames
specified by frames. If frames is greater than the number of frames currently acquired,
all available frames are returned with a warning message stating that the requested
number of frames was not available. obj must be a 1-by-1 video input object.
data is returned as an H-by-W-by-B-by-F matrix where
H Image height, as specified in the object's ROIPosition property
W Image width, as specified in the object's ROIPosition property
B Number of color bands, as specified in the NumberOfBands property
F Number of frames returned
data is returned to the MATLAB workspace in its native data type using the color space
specified by the ReturnedColorSpace property.
You can use the MATLAB image or imagesc functions to view the returned data. Use
imaqmontage to view multiple frames at once.
peekdata is a nonblocking function that immediately returns image frames and
execution control to the MATLAB workspace. Not all requested data might be returned.
Note peekdata provides a look at the data; it does not remove data from the memory
buffer. The object's FramesAvailable property value is not affected by the number of
frames returned by peekdata.