Spectral characteristics and motion-compensated restoration of composite frames

The practice of superimposing the fields of a frame is applied in various fields, for example, thermographic and biomedical imaging. The pictures obtained in this way, which are termed composite frames, are severely degraded if the scene´s objects are not perfectly still. The restoration of composite frames affected by motion-induced blurring requires the ability to estimate the field displacement from composite frames. The frequency domain analysis of composite frames proposed in the paper suggests a displacement estimation technique of a phase-correlation type that can be applied to composite frames