Physical objects, including still and moving images, sound/audio and text
are transformed into more compact forms for identification and other
purposes using a method unrelated to existing image-matching systems
which rely on feature extraction. An auxiliary construct, preferably a
warp grid, is associated with an object, and a series of transformations
are imposed to generate a unique visual key for identification,
comparisons, and other operations. Search methods are also disclosed for
matching an unknown image to one previously represented in a visual key
database. Broadly, a preferred search method sequentially examines
candidate database images for their closeness of match in a sequential
order determined by their a priori match probability. Thus, the most
likely match candidate is examined first, the next most likely second,
and so forth. With respect to the recognition of video sequences and
other information streams, inventive holotropic stream recognition
principles are deployed, wherein the statistics of the spatial
distribution of warp grid points is used to generate index keys. The
invention is applicable to various fields of endeavor, including
governmental, scientific, industrial, commercial, and recreational object
identification and information retrieval. Extensions of the technology
are also disclosed to achieve a uniform distribution of objects over the
database search, a consideration which is central to scalability. In
particular, a generalized method has been developed based on reticle
projection, which greatly enhances the uniformity of object distributions
in the collected data Thus, whereas statistical criteria are used with
respect to particular embodiments in transforming a construct associated
with an image, audio, text or other representation, a reticle projection
may alternatively be used in attribute transformation according to
alternative embodiments of the invention.