Image processing: Some challenging problems

assumed. The two-dimensional projection of this model is v'(x, y). Thefirst imagein the sequenceofimagesis adirect frontalviewoftheperson.ThespatialgradientS(x,y)ofthis imageandthe temporalgradient T(x, y) are obtained. From the spatial andtemporalgradients, the size oftheface in the image sequence is estimated. Athreshold for the temporal ................
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