Overcoming the "global scale ambiguity" to find actual physical dimensions rather than just relative sizes. Core Methodologies
Without prior knowledge, a single image contains infinite possible 3D interpretations. Classical computer vision relies on (two eyes/cameras) or structure from motion (video sequences) to triangulate points and recover depth. But in single-view metrology, there is no second perspective. The system must rely on cues hidden within the image itself—shadows, textures, perspective lines, and learned priors about how the world looks. single view metrology in the wild