The Perception of Visual Depth

The perception of visual depth is how our brains interpret a flat image as having three dimensions—distance, height, and depth. This process uses various cues, such as how objects overlap, differences in size, shading, and perspective lines. Our eyes also work together (binocular vision) to gauge distance through slight differences in the images each eye sees, known as stereopsis. These combined cues enable us to understand the spatial relationships in our surroundings, allowing us to judge how far away objects are and how they relate to each other in space.