Texture gradient refers to the visual perception of texture changes in a surface as it recedes into the distance. When objects are close, their textures appear more detailed and distinct. As they move further away, the texture becomes less defined and more uniform, creating a gradient effect. This phenomenon helps our brains interpret depth and distance in a scene. In art and photography, understanding texture gradient can enhance the realism of a composition. Artists often use this technique to guide the viewer's eye and create a sense of three-dimensionality. By manipulating texture gradients, they can evoke feelings of space and distance within their work.