A STUDY ON INTRODUCTION OF POWER SPECTRUM DENSITY MODEL FOR FIELD MERGED SIGNAL AND ITS ANALYSIS

This paper describes a theoretical model of the power spectrum density (PSD) for a field-merged frame signal and compares the efficiency bet ween the field-based coding and frame-based coding which uses the fiel d-merged signal. The field-merged signal has also been used recently a s an input signal to the spatial coding process for the coding of inte rlaced-scanned television signals. However, the nature of PSD, which i s an important basis for high-efficiency coding, is not sufficiently u nderstood in the area of field-merged signal. For instance, optimality of the conventional techniques applied to the field-merged signal is not assured. A theoretical PSD model for the field-merged signal has b een introduced and its properties have been clarified in relation to t he motion of the image. The performance of frame based-coding is calcu lated using this model.