Digital image processing methods, digital image devices and articles of manufacture are described. The computing device then adaptively manages the synchronous meeting based at least in part on the template andor knowledge. A thin-film resonator is fabricated on the substrate, the resonator including a portion of a bottom electrode layer and a portion of a top electrode layer. Accordingly, a sensorless speed control system of the induction motor can be easily implemented with the superiority of low-speed characteristic and the stable and fast response characteristics of speed in a wide operation region.