Stereovision is a research field attracting people from various fields such as psychology, physiology, mathematics and recently computer vision. Physiological and psychological studies allowed to understand, in a significant way, the behavior of the visual cortex. Plenty of these results have been modeled but never implemented in imaging applications for various reasons. However, this step is very important in order to take advantage of the advances in the aforementioned fields. This paper tries to formulate analytically the binocular behavior of the HVS by applying the binocular fusion made by the complex cells to merge the retinal information provided by the simple cells. This allows to study the evolution of the binocular energy with regards to different impairments on one or both of the stereo pairs. Results demonstrate and important correlation between the binocular energy and the quality of the 3D reconstruction.