Page 179 - Automated Fingerprint Identification Systems (AFIS)

164 AUTOMATED FINGERPRINT IDENTIFICATION SYSTEMS

2. Type 2: user-defined descriptive record text. The type 2 record contains
user-defined textual fields that provide textual information about the identifi-
cation and description of the subject of the fingerprint information.
3. Type 3: low-resolution grayscale record. The type 3 record is used to
exchange low-resolution grayscale fingerprint image data information that was
scanned at no less than the minimum scanning resolution, then scaled down,
subsampled, or interpolated.
4. Type 4: high-resolution grayscale record. The type 4 record contains and
is used to exchange high-resolution grayscale fingerprint data, which may be in
a compressed form. There are typically 14 of these high-resolution records in
a file: the ten rolled impressions, the two thumb plain impressions, and the
plain impressions of each of the remaining sets of four fingers on each hand.
5. Type 5: low-resolution binary record. The type 5 record contains and is
used to exchange low-resolution binary fingerprint image data. There are typ-
ically 14 of these high-resolution records in a file: the ten rolled impressions,
the two thumb plain impressions, and the plain impressions of each of the
remaining sets of four fingers on each hand.
6. Type 6: high-resolution binary record. The type 6 record contains and is
used to exchange high-resolution binary fingerprint image data. There are typ-
ically 14 of these high-resolution records in a file: the ten rolled impressions,
the two thumb plain impressions, and the plain impressions of each of the
remaining sets of four fingers on each hand.
7. Type 7: user-defined image data record. The type 7 record allows the
sender and recipient to define image data not defined elsewhere in the stan-
dard. Such images could include soles, toes, or ear impressions.
8. Type 8: signature image data record. The type 8 record contains or is used
to exchange scanned high-resolution binary or vectored signature image data.
A series of binary numbers expresses the vectored signature data.
9. Type 9: minutiae record. The type 9 record provides for remote search-
ing of latent prints. More specifically, the type 9 record is a logical record that
contains and is used to exchange encoded geometric and topological minutiae
from a finger or palm. Each record contains processed image data from which
the location and orientation descriptors of extracted minutiae are listed. It must
contain the minutiae data from a fingerprint, palm, or latent print.
10. Type 10: facial and scar, mark, and tattoo (SMT) image record. The type
10 tagged-field image record contains and is used to exchange facial and SMT
image data together with the textual information related to the digitized image.
Sources for the images may include a scanned photograph, a live image cap-
tured on a digital camera, or a digitized “freeze frame” from a video camera.
11. Type 11: record reserved for future use.
12. Type 12: record reserved for future use.