  This paper presents the validation of a computational tool that serves to
obtain continuous measurements of moving objects. The software uses techniques
of computer vision, pattern recognition and optical flow, to enable tracking of
objects in videos, generating data trajectory, velocity, acceleration and
angular movement. The program was applied to track a ball around a simple
pendulum. The methodology used to validate it, taking as a basis to compare the
values measured by the program, as well as the theoretical values expected
according to the model of a simple pendulum. The experiment is appropriate to
the method because it was built within the limits of the linear harmonic
oscillator and energy losses due to friction had been minimized, making it the
most ideal possible. The results indicate that the tool is sensitive and
accurate. Deviations of less than a millimeter to the extent of the trajectory,
ensures the applicability of the software on physics, whether in research or in
teaching topics.
