  This paper delves into the crucial aspects of pointer-induced quantum
decoherence and the transition between von Neumann's projective strong
measurement and Aharonov's weak measurement. Both phenomena significantly
impact the dynamical understanding of quantum measurement processes.
Specifically, we focus on the interplay between quantum decoherence and the
transition from weak to strong measurement by deducing and comparing the
quantum decoherence and weak-to-strong measurement transition factors within a
general model and using the well-known Stern-Gerlach experiment as an
illustrative example. Our findings reveal that both phenomena can be
effectively characterized by a universal transition factor intricately linked
to the coupling between the system and the measurement apparatus. The analysis
presented can clarify the mechanism behind the relations of quantum decoherence
to the weak measurement and weak-to-strong measurement transition.
