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sn#046237 filedate 1973-06-05 generic text, type T, neo UTF8
~{EF8INTRODUCTION.
The second design choice, of multi image anaylsis rather
than single image analysis, provides a basis for solving for camera
positions and feature depths. The third design choice solves (or
rather avoids) the problem of integrating an edge finder's results
into an image. By using a very simple edge finder, and by accepting
all the edges found, the image structure is never lost. This design
postpones the problem of interpreting photometric edges as physical
edges.
The fourth choice is a resolution to write an image
processor that does not requires operator assistance or parameter
tuning. The fifth choice of the 216 by 288 fixed window size is a
sin that proved surprisingly expedient, it is explained later. A
variable window version of CRE at halves, thirds and other simple
fractions of its present window size will be made at some future
date.
The final design choice of using machine language was for
the sake of implementing node link data structures that are
processed 100 faster than LEAP, 10 times faster than compiled LISP
and that require significantly less memory than similar structures
in either LISP or LEAP. Furthermore machine code assembles and loads
faster than higher level languages; and machine code can be
extensively fixed and altered without recompiling.
It is my impression that CRE does not raise any new
scientific problems; nor does it have any really new solutions to
the old problems; rather CRE is another competent video region edge
finding program with its own set of tricks. However, it is further
my impression that the particular tricks for smoothing, nesting and
comparing polygons in CRE are original as programming techniques.
The intended use of CRE is illustrated by the sequences of
turn table pictures on pages 1 and 3. The figures on page 5
illustrate the quality of contoured images over a range of subject
matter. Finally the application of CRE to typography is illustrated
below:
{Christmas Font
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z.
a b c d e f g h i j k l m n o p q r s t u v w x y z.}
ACKNOWLEDGEMENT.
Tovar Mock assisted me with the development of the type font
making program, TVFONT.
~I1973,800;F8- 4 -