LBP2 User Guide Document No: 50306-001 Rev G 3/12/2020 Page 63
This format has several advantages. One key advantage of this format is that
frame averaging or baseline subtraction will allow the lower order bits to be
populated with fractional values thus allowing greater precision.
In order to utilize the normalized data the native format must be known or
determined. The data format is stored in one of the HDF5 file’s nodes. The
window below shows an HDF viewer that is accessing the string that describes the
native format of the data in the file. The string, see below, is found in a folder on
node 1, RAWFRAME, BITENCODING; and is described as L16_12 .
This means that the original or raw data format was from a 12 bit camera and
was shipped left justified in a 16 bit word. The L, R or S tells us if the data was
left or right justified within the word sized (pixel) packet or if it was a signed
format. All signed formats are left bit justified with the sign bit in the left most
position. LBP2 can support any one of the following native formats: (note that
not all of these formats are in common use by camera manufacturers)
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