Brightness-based Stereo Matching

Abstract

This paper presents a stereo matching method, based on image brightness matching, that does not rely on correlatitsn. We develop a model for how brightness changes from one irnage to another in a stereo pair. A spatially-varying multiplier is used to relate image brightnesses, so that matching of dissimilx greyvalues can occur. The problem of stereo matching then depends upon solving for the multiplier and disparity fields. The so!ution is obtained by formulating an equivalent minimization problem, then solving the minimization problem using the variational calculus. We describe the implementation on a highly parallel computer, and present sample results.