Toshio Endoh

Face recognition through hough transform for irises extraction and projection procedures for parts localization for facial caricaturing system PICASSO

In order to generate facial caricatures automatically, it is necessary to recognize facial parts in advance. Since it is difficult to realize the face recognition, the primal description of face has been provided manually so far also in our project PICASSO for facial caricaturing.

On Typical Implementations of Hough Transform for Improving Its Performances

This paper proposes two typical implementations of Hough transform for improving Hough performances. RVHT(Randomized Voting Hough Transform) can provide higher detectability of shorter edge lines with lower computation cost than RHT(randomized HT) and PHT(probabilistic HT) algorithms.

An objective function for 3-D motion estimation from optical flow with lower error variance than maximum likelihood estimator

This paper describes a new objective function for estimating 3-D motion from an optical flow. We construct a generalized Rayleigh-quotient form objective function, which provides an unbiased estimator and whose use drastically reduces the computational cost. This function includes an arbitrary weighting function. We show by numerical evaluations that with a suitable weighting function it provides an estimator whose variance is smaller than that of the maximum likelihood estimator.<<ETX>>