The bite detection is very important but difficult element of the social interaction analysis. Standard observation methods like human observer or a camcorder of visible light frequencies fail in this case. However, it is possible to discern cooler spots on the rodent's body that appear after body contact with another individual, and vanish after short time. These spots are assumed to be a saliva trace left on fur after bite. In this paper we have described a result of saliva trace detection by the most popular corner detectors. The analysis of traces and their parameters is also presented. The dynamic characteristic of the temperature change of the saliva trace enables the automatic discrimination of the related characteristic point from other corner points. This can be very useful for the automatic analysis of social behavior of animals in many pharmacological studies.
Laboratory rodent social behaviour analysis is an extremely important task for biological, medical and pharmacological researches. In this work thermal images features that facilitate analysis are presented. Methods to distinguish objects on the basis of thermal distribution are tested. Actions of grooming or biting one rodent by anotherimportant social behaviour incidents -are clearly visible in thermal images due to the saliva left on fur. Numerical parameters useful in detecting the occurrence of these actions are described. Recognition results are verified on the rats' social behaviour thermal images dataset.
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