  This paper is the first to review the scene flow estimation field, which
analyzes and compares methods, technical challenges, evaluation methodologies
and performance of scene flow estimation. Existing algorithms are categorized
in terms of scene representation, data source, and calculation scheme, and the
pros and cons in each category are compared briefly. The datasets and
evaluation protocols are enumerated, and the performance of the most
representative methods is presented. A future vision is illustrated with few
questions arisen for discussion. This survey presents a general introduction
and analysis of scene flow estimation.
