  Parameter choosing in classical edge detection algorithms can be a costly and
complex task. Choosing the correct parameters can improve considerably the
resulting edge-map. In this paper we present a version of Edge Drawing
algorithm in which we include an automated threshold choosing step. To better
highlight the effect of this additional step we use different first order
operators in the algorithm. Visual and statistical results are presented to
sustain the benefits of the proposed automated threshold scheme.

Computer Vision and Pattern Recognition