number of anomalous pixels both actual and detected, the wrong
detections and the number of not detected anomalous pixels.
The number of the detected areas after filtering is wrong in the
first case, due to misregistration. The number of pixels detected
in the test 3 is almost correct, but the contemporary detection in
both illuminated and shadowed zones is not performed
automatically.
4. CONCLUSIONS AND FUTURE WORKS
A semiautomatic method for anomalous change detection has
been described. The method uses the grouping of the image
difference values, to detect both small and diffused changes.
Three tests has been realized to evaluate the performances of the
method. The results show that the better performances are
obtained in case of cloudy days, while the contemporary
presence of lighted and shadowed zones makes impossible an
automatic detection.
The foreseen development of the research will regard the
isolation of single areas and the use of the procedure for images
with noises due to, e.g., rain or fog.
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