A woodpecker joint location method based on motion image sequence

Abstract

The invention provides a woodpecker articulation point positioning method based on a motion image sequence, and the method comprises the following steps: firstly setting a marking point at an approximate position of a woodpecker articulation point, and collecting a video image sequence of the pecking behavior of a woodpecker; carrying out the preprocessing of each effective image frame, and obtaining the coordinates of each marked articulation point; carrying out the optimization of the positions of the articulation points through an optimization algorithm, and setting supposed articulation points corresponding to the numbers of marked articulation points, wherein the distance between each two adjacent supposed articulation points is equal to the mean value of the distances between two adjacent marked articulation points; building a distance summation function for the supposed articulation point and the marked articulation point with the same number in the same frame, enabling the distance summation function to serve as an optimization target function, and carrying out the optimal solving. obtaining the motion data according to the coordinates of the optimal articulation points in all effective frames. The method can locate the articulation points of the woodpecker more precisely in the motion image sequence of the pecking motion of the woodpecker, is simple in calculation, is higher in precision, and is easy for popularization.

Description

technical field

[0001] The invention relates to the field of woodpecker joint point positioning, in particular to a woodpecker joint point positioning method based on moving image sequences. Background technique

[0002] The woodpecker is a common bird that pecks open the bark and digs out tree holes for predation or nesting by its sharp and hard beak. Studies have shown that although woodpeckers are small in size, their maximum pecking acceleration can reach more than 2000g, and they can quickly transmit the very large impact force generated by pecking, and perform continuous and precise pecking. Therefore, the research on the woodpecker's woodpecker behavior has important theoretical research and engineering application value for medicine, electronics, materials science, mechanics and mechanics.

[0003] Early research on woodpeckers mainly focused on the impact mechanism of the head of woodpeckers, but gradually found in the research that the impact resistance mechanism ...

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