Binocular shading and visual surface reconstruction

Binocular shading and visual surface reconstruction

Binocular visual surface perception.

Binocular disparity, the differential angular separation between pairs of image points in the two eyes, is the well-recognized basis for binocular distance perception. Without denying disparity's role in perceiving depth, we describe two perceptual phenomena, which indicate that a wider view of binocular vision is warranted. First, we show that disparity can play a critical role in two-dimensio...

Scale Space Surface Recovery using Binocular Shading and Stereo Information

Shape-from-shading algorithms that use a single image often find incorrect solutions because of ambiguity in the image shading. We describe a robust shape-from-shading algorithm using scale space tracking that can resolve most of these ambiguities by using two images taken from slightly different positions. Further improvements are obtained by combining stereo with shape-fromshading. Results ar...

Variable Albedo Surface Reconstruction from Stereo and Shape from Shading

We present a multiview method for the computation of object shape and re ectance characteristics based on the in tegration of shape from shading SFS and stereo for non constant albedo and non uniformly Lambertian surfaces First we perform stereo tting on the input stereo pairs or image sequences When the images are uncalibrated we recover the camera parameters using bundle adjustment Based on t...

Surface Reconstruction from Disparate Shading: An Integration of Shape-from-Shading and Stereopsis

A cooperative integration of stereopsis and shapefrom-shading is presented. The integration makes the process of 3-d surface reconstruction better constrained and more reliable. It also obviates the need for surface boundary conditions, and explicit information about the surface albedo and the light source direction, which can now be estimated in an iterative manner.