stereoheli

Stereoheli is a term that refers to a specific type of optical illusion or perception, often encountered in stereoscopic imaging or when viewing three-dimensional scenes. It describes the perceived depth or relief that arises from the slight differences in perspective between two images of the same object or scene, known as a stereogram. When these two images are presented to each eye separately, the brain fuses them, creating the sensation of three-dimensionality.

The term "stereoheli" can be understood as a portmanteau of "stereoscopic" and "relief," emphasizing the creation of apparent solidity and depth. This phenomenon is fundamental to how stereoscopic cameras and displays work, capturing or generating slightly offset images that mimic the way human eyes perceive the world. The effectiveness of stereoheli depends on several factors, including the degree of parallax (the angular difference in the positioning of an object when viewed from different points), the clarity of the images, and the viewer's ability to fuse the two images.

Applications of stereoheli are found in various fields, including 3D cinema, virtual reality, augmented reality, and specialized scientific imaging. In these contexts, the goal is to enhance the viewer's immersion and understanding by presenting a more realistic and engaging three-dimensional representation. The underlying principle of stereoheli is a natural aspect of human vision, and its artificial reproduction allows for experiences that go beyond two-dimensional representation.