Estimation of Σ Well Depth

σ-Normality of Topological Spaces

Depth Invariant Reflectance Estimation

Spectral reflectance is often derived from a sequence of images acquired under different, narrowband, infinitely far away illuminants, which means their intensity is constant throughout the scene. When small LEDs, located close to the target are used the light intensity becomes scene depth dependent. We propose to use an RGB+depth camera which lets us model the spatial light intensity falloff a...

Depth estimation of face images

In this paper, we propose an efficient algorithm to reconstruct the 3D structure of a human face from one or more of its 2D images with different poses. In our algorithm, the nonlinear least-squares model is first employed to estimate the depth values of facial feature points and the pose of the 2D face image concerned by means of the similarity transform. Furthermore, different optimization sc...

Depth estimation of gravity anomalies by S-transform of analytic signal

The S-transform has widely been used in the analysis of non-stationary time series. A simple method to obtain depth estimates of gravity field sources is introduced in this study. We have developed a new method based on the spectral characteristics of downward continuation to estimate depth of structures. This calculation procedure is based on replacement of the Fourier transform with the S-Tra...

Depth estimation from stereo cameras

Introduction When looking out of the side window of a moving car, the distant scenery seems to move slowly while the lamp posts flash by at a high speed. This effect is called parallax, and it can be exploited to extract geometrical information from a scene. From multiple captures of the same scene from different viewpoints, it is possible to estimate the distance of the objects, i.e. the depth...