منابع مشابه
Walking Straight into Circles
Common belief has it that people who get lost in unfamiliar terrain often end up walking in circles. Although uncorroborated by empirical data, this belief has widely permeated popular culture. Here, we tested the ability of humans to walk on a straight course through unfamiliar terrain in two different environments: a large forest area and the Sahara desert. Walking trajectories of several hou...
متن کاملExtraction of Circles from Arcs Segmented into Short Straight Lines
paper presents a new method that is capable of extracting circles from complicated and heavily corrupted images, which is not based on the Hough transform (HT). The proposed method consists of three parts. First, we approximately detect short straight lines from the image by using a fast line extraction algorithm. Second, it uses a least squares fitting algorithm for arc segments. The arc segme...
متن کاملWalking in circles
We show that for every x1, . . . , xn, y1, . . . , yn ∈ S there exists i ∈ {1, . . . , n} such that ∑n k=1 d(xi, xk) ≤ ∑n k=1 d(xi, yk), where S 1 is the unit circle and d is the distance on S. We also discuss a game theoretic interpretation of this result.
متن کاملWalking in circles: a modelling approach.
Blindfolded or disoriented people have the tendency to walk in circles rather than on a straight line even if they wanted to. Here, we use a minimalistic walking model to examine this phenomenon. The bipedal spring-loaded inverted pendulum exhibits asymptotically stable gaits with centre of mass (CoM) dynamics and ground reaction forces similar to human walking in the sagittal plane. We extend ...
متن کاملA Dynamic Combinatorial Hough Transform for Straight Lines and Circles
A new algorithm for the Hough transform is presented. It uses information available in the distribution of image points to calculate the parameters associated with combinations of the minimum number of points necessary to define an instance of the shape under detection. The method requires only one dimensional accumulation of evidence to determine the parameters associated with a given shape. U...
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ژورنال
عنوان ژورنال: Current Biology
سال: 2009
ISSN: 0960-9822
DOI: 10.1016/j.cub.2009.07.053