dil
specialists. Like many others before and since his work was handicaj pped
bv limited financial support. In the area of close range instrumentation,
beam splitting device which, when attached to a a suitable
camera (focal length. 150 mm), would operate over a range of ob
distances from. 30 cm to 3 meters and allow the taking of full umn
bodv form at a distance of 2 meters, with a reduction of 20:1. He
reported using synchronized Wild and Zeiss 40 em base stereometric
cameras (presumably the C-4 and Sb IK 40), the A-4, A-5 and A-6
autographs, and a stereoscope with parallex bar. A use “plotting is
time consuming when using the parallex bar method," he constr ucted
three simple instruments of his own design——(1) for direct plotting
from radiograms, (2) a stereo micrometer and (3) a special p
device.
he described à
Miskin drew attention to a number of potentially useful biomedical
applications of stereophotogrammetry: (1) spinal deformations during
and after pregnancy, (2) body typog graphy, (3) body volume and (4)
surface ‘area measurments. He also suggested an ingenious use of a
hammock4ike net for infant studies——as well as supporting the infant,
the net provided additional contrast over that normally present in the
infants’ largely monochromatic skin surface. Regrettably, he gave too
few technical details about his work to allow others to benefit
substantially from the findings. Nevert heless, his articles (1956, 1960,
1961) have seived to alert many prospectiv ve users about the potential of
stereophotogrammetry in biology and medicine.
>»
RE:
During the time Miskin was pursuing his studies at University
College, London, Hertzberg, Dupe rtuis and Emmanuel (1957) were
independently e Sa stercophotogrammetry as an anthropometric
tool in the United States. Hertzberg et al encountered much the same
instrumentation hh ms: (1) a lack of suitable stereometric cameras
and (2) difficulty in fusing stercopairs due to poor skin contrast. They
solved the first problem by constructing a stereocamera from two
modified K-17 aerial cameras. With this arrangement, diapositives were
obtained for plotting on a Kelsh stereoplotter. Increased skin contrast
was achieved by stippling a black substance in random fashion over the
exposed body surface. The standing subject was rotated on a turntable
in 90° increments to achieve all around coverage. Their article included
front and rear view contour maps of an adult male and an isometric plot
of all-around profiles at four levels of the torso.
In their conclusions, Hertzberg et al commented that “the method
should find increasing application for the medical and dental purposes to
which other workers have already put it; and it should become very
useful among biological sciences for the measurement of growth and age
changes of any animal, including man.” Direct anthropometric and
photogrammetric measurements were compared and the authors went on