Recovering Camera Motion from Image Sequence Based on Registration of Silhouette Cones: Shape from Silhouette Using a Mobile Camera with a Gyro Sensor.
Takayuki Okatani, Koichiro Deguchi · 2000
A method for reconstructing shape of an object from its silhouette using a mobile camera to which a gyro sensor is attached is proposed. In order to determine unknown camera positions at which images are taken, the pose information of the camera derived from the attached gyro sensor as well as silhouette of the object are used. An algorithm for computing the camera positions by an iterative process of registering silhouettes associated with viewpoints is shown. After the computation of the camera positions, the object shape is reconstructed based on the usual shape from silhouette algorithm. The camera is mobile, and thus it can take silhouette images of the object from arbitrary directions. This enables us to avoid incorrect shape reconstruction due to restricted viewing angles, which often occurs in conventional shape from silhouette methods. Several experimental results are shown. 1