Abstract: The method for taking a panoramic photograph includes: determining a shooting focal distance and a shooting visual angle; shooting at least two photographs, comprising all objects required to be shot in an area of the shooting visual angle, according to the shooting focal distance and the shooting visual angle which are determined; and processing the at least two photographs to obtain one panoramic photograph. The corresponding device for taking a panoramic photograph is also provided.

Abstract: A method for taking a photograph and corresponding device are provided. The method includes: determining a shooting focal distance and a shooting visual angle (101); shooting at least two photographs, comprising all objects required to be shot in an area of the shooting visual angle, according to the shooting focal distance and the shooting visual angle which are determined (102); and processing the at least two photographs to obtain one panoramic photograph (103). Another method for taking a photograph and corresponding device are provided, wherein the method includes: determining a shooting focal distance and an initial position of a lens assembly; determining two shooting positions of two photographs used for obtaining a three dimensions photograph according to the initial position of the lens assembly; shooting one photograph at each of the two shooting positions respectively; and processing two shot photographs to obtain a three dimensions photograph.

Abstract: A variable reluctance sensor for sensing the rotational speed of a target wheel having teeth, separated by slots, angularly positioned along its periphery is comprised of an elongated core interposed between two permanent magnets which generate additive magnetic flux passing longitudinally through the elongated core. This additive flux is, however, opposed by a longitudinal flux developed by the opposing ends of the permanent magnets. In the absence of surrounding ferromagnetic material, the magnitudes of the opposing longitudinal flux components are essentially equal, resulting in no net longitudinal component of magnetic flux. The elongated core and permanent magnets are encircled by a multi-turn electrical coil which is wound transversely about a longitudinal dimension. A portion of the elongated core and permanent magnets extending beyond the electrical coil are positioned adjacent the periphery of the target wheel and define an air gap therebetween.