Log surface determination technique

Details Log surface determination technique Log surface determination technique

1981-09-17

1984-01-03

Chin, Tommy P.

Facsimile and static presentation processing

Static presentation processing

Attribute control

364572, 364604, 358106, 358282, 382 9, H04M 700

Patent

active

044245300

ABSTRACT:
A log surface determination technique involves optically measuring a tree stem and accurately separating the image of the tree stem from adjacent background, determining the true surface of the stem, eliminating discontinuities or anomalies, and identifying the ends of the stem, thereby making more accurate the definition of diameter measurement planes and more accurate edges or sides of the stem for permitting a more precise evaluation of the tree stem to obtain optimal board feet yield. The tree stem is optically scanned to produce data representative of a series of adjacent optical slices through the stem, with successive optical slices of the tree stem being aligned with one another to produce a composite picture of the surface of the stem which may include a number of edges containing both the size of the stem and anomalies such as branch stubs, bark chips, etc. Through a refinement algorithm, employing an X-shaped filter, the existence of a true edge or side of the stem can be identified as contrasted to anomalies which would otherwise produce erroneous data for subsequent tree stem evaluation. Through this filtering process, once the anomalies are removed, gaps in the outline of the tree stem which result from the filtering process are filled in by an interpolation procedure based upon adjacent portions of the stem edges.

REFERENCES:
patent: 4183013 (1980-01-01), Agrawala et al.
patent: 4201977 (1980-05-01), Shimizis
patent: 4296405 (1981-10-01), Rich
patent: 4334274 (1982-06-01), Agui et al.
E. C. Jacobson et al., "Algorithm for Checking Shapes in Large-Scale Integration Layouts", IBM Technical Disclosure Bulletin, vol. 18, No. 6, Nov. 1975, pp. 1881-1884.

Affiliated with

Also associated with

Rating

Log surface determination technique does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Log surface determination technique, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Log surface determination technique will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1034130