  In this work, an improved quark model approach to the $\omega$ meson
photoproduction with an effective Lagrangian is reported. The {\it t}-channel
{\it natural} parity exchange is consistently taken into account through the
Pomeron exchange, while the {\it unnatural} parity exchange is described by the
$\pi^0$ exchange. It shows that with very limited number of parameters, all the
available experimental data in the low energy regime can be consistently
accounted for in this framework. Effects from the intermediate nucleonic
resonances are investigated in several polarization observables. The
sensitivities of these observables to the resonance effects are probably the
best way for identifying those so-called "missing resonances" in the baryon
spectrum.
