Shyh-Ming Jong

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Hybrid step motor is one of the primary candidates for direct drive motor due to its high torque and low speed, but the vibration it produces is a major drawback to use it in applications. The micro-step method is typically used to reduce the vibration and to obtain high resolution motor steps, which divides a single step into many micro-steps. PWM (Pulse(More)
This paper proposes a method - shape from photometry - to recovery the surface information with three images illuminated by three point light sources. Since the shape from photometry is based on the gray level of the illuminated surface image, the reflectance models are the major roles in shape recovery. The reflectance models are the Lambertian and(More)
  • Shyh-Ming Jong
  • 2007 International Conference on Machine Learning…
  • 2007
In range finding, the depth from defocus (DFD) is a simple and effective method. We use the DFD method to analyze the defocused images to obtain depth information using Gaussian blurred function. In order to find the range of objects, a sigma value of the Gaussian function due to edges out of focus is necessary. Since the sigma value of the Gaussian(More)
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