Depth Cues

• What is sensation?


  The process of our senses taking in information from our surroundings, through (sense) receptors.
• What is perception?


  Organising and interpreting sensory information, in order to understand what is happening.
• Visual cues are features in the environment that provide information about depth, distance, etc.
• Monocular depth cues use one eye.
• Binocular depth cues use both eyes.
• Retinal disparity


  Each eye views the world around us at slightly different distances. Objects further away have a smaller difference in distance in each eye, while objects closer to us appear to have a larger difference.
• Convergence


  The closer an object is to our eyes, the more our eyes need to work and turn towards each other to focus on it. Further away objects require less of this. It can help perceive the distance of an object.
• Height in plane shows how objects higher up in an image, or visual field, appear further away to us.
• Relative size is where objects further away appear smaller than a known object (of the same appearing size) in an image or visual field.
• Occlusion is where objects that are covered/obscured in an image, or visual field, appear further away.
• Linear perspective is where parallel lines (e.g., train tracks) converge at a distance.