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Biomedical subjects

L J Pilgrim

Publications and source records attributed to L J Pilgrim.

2 recordsLinked to original sources

Monitoring surface shape variations on the human body.

Monitoring changes on the surface of the human body can be difficult due to the very unstable nature of skin. Stable control points between epochs are difficult to establish. This paper examines previous attempts to monitor the human surface. An algorithm is presented which is capable of matching two models of the one area on the human body which have been gathered at different epochs. No control points are required to exist on the human surface, or between epochs. Further, the algorithm is expanded to include surface differencing capabilities. This allows surfaces which have changed shape between epochs to be matched and the differences identified.

Algorithms↗

History of photogrammetry in medicine.

Photogrammetry is one of the many fields of three dimensional measurement associated with surveying. Photogrammetry has been used for medical applications since midway through the nineteenth century, and is now beginning to regain its past popularity due to recent developments in real time instrumentation. Medical photogrammetry, now part of the broader field known as biostereometrics, has had varying popularity over the past one hundred and fifty years due to the many problems encountered during practical applications. This paper will review those applications and explain how technology has been used to overcome many of the problems encountered.

History, 20th Century↗