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A spherical image has a full field of view. Using spherical images can estimate camera pose more accurately than conventional perspective images. It is known that a sphere can be quasi‐uniform sampled by dividing a geodesic dome repeatedly; it results in a representation with rotational invariance approximately. Based on this fact, in this paper we proposed a method of estimating a spherical camera...
While the conventional image plane is planar, recently bio-inspired cameras are developed in which the photodetectors are positioned on a hemisphere. Image captured by such a spherical retina camera is a discrete spherical image with irregular pixels. In this paper we propose a novel method of computing optical flow from such discrete spherical images. We simulate a spherical retina as a spherical...
A divisible geodesic dome's image is often used for the representation of a spherical image in a digital computer. In the spherical image, any points are enclosed by a triangle facet whose vertices correspond to the position of the pixels. In this paper we propose two novel algorithms of interpolating a point on a sphere based on the values of the three vertices. One is the spherical Barycentric interpolation...
This paper proposes a method of determining two pairs of vanishing points from an H-pattern, which consists of two parallel lines and another line perpendicular to the two, in a spherical image. In contrast to the conventional methods which determine a vanishing point (a pair of vanishing points at a spherical image) from a group of parallel lines, the proposed method first determines a pair of vanishing...
By representing projection of a point at space on a spherical image, called spherical projection, the conventional stereo algorithm can be reformulated. This means that we can acquire the whole surrounding 3D structure of environments for the construction of immersive VR (virtual reality) environment by full view spherical images, called spherical stereo, instead of the conventional approach that...
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