No subject

  A SANE image is a rectangular area. The rectangular area is
  subdivided into a number of rows and columns. At the intersection of
  each row and column is a quadratic pixel. A pixel consists of one or
  more sample values. Each sample value represents one channel (e.g.,
  the red channel). Each sample value has a certain bit depth. The bit
  depth is fixed for the entire image and can be as small as one
  bit. Valid bit depths are 1, 8, or 16 bits per sample. If a device's
  natural bit depth is something else, it is up to the driver to scale
  the sample values appropriately (e.g., a 4 bit sample could be
  scaled by a factor of four to represent a sample value of depth 8).

So the answer is yes.

Hope this helps,
-- 
Olaf Meeuwissen, LPIC-2           FLOSS Engineer -- AVASYS Corporation
FSF Associate Member #1962               Help support software freedom
                 http://www.fsf.org/jf?referrer=1962