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  • Automated Method for the Acquisition and Processing of Anaglific Stereoscopic Anatomical Images

    Final Number:
    305

    Authors:
    alekcey colione MS

    Study Design:
    Laboratory Investigation

    Subject Category:

    Meeting: Congress of Neurological Surgeons 2015 Annual Meeting

    Introduction: The creation of a stereoscopic photographic pair requires that two photographs be taken of the same object from different points of view. There are several devices that allow these images to be obtained.

    Methods: The photographic camera used was a Nikon® D5100 equipped with a 35 mm lens. Lighting was done with two digital flashes lights fit into two softboxes. An automated device called MACE was especially developed for this project; it moves the camera laterally (translation) and on its own axis (rotational). This movement was accomplished using two servomotors. These servomotors were connected to an microcontroller. The system was programmed to move the camera automatically.

    Results: The software and electronic circuit board developed in this project allow automated control of camera movement. Alterations in the parallax resulting from translational or rotational movements can be easily done for other distances between the object and camera. A quick and automated movement of the camera enables the capture of a large number of photographs in a short period of time, which in turn facilitates the creation of sequential images of the model. We can obtain a photographic sequence of the object’s entire surface, which enables the reproduction of a three-dimensional grid and subsequent 3D reconstruction of the object through the use of specific software. Another element essential to the quality of the images is lighting. To obtain a diffuse light and avoid unnecessary glare, which is constant in anatomical specimens, it was necessary to place softboxes in front of the flashes.

    Conclusions: The production of pairs of stereoscopic photographs of anatomical specimens is benefited by the use of a device that allows automated horizontal and rotational movements. The images obtained in this manner can be reproduced on any method. Obtaining photographs sequentially around the object perimeter facilitates three-dimensional reproduction.

    Patient Care: In fact, the work improve the learning of 3D neuroanatomy

    Learning Objectives: To develop an automated equipment model that can be used to obtain pairs of photographs, making the composition of three-dimensional images easier.

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