For this use case we ran into the challenge to create a workflow to procedurally create a photorealistic carpet. We used Houdini as it allows a great flexibility in rendering a variation of similar yet unique visuals of 3D elements.
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The carpet is rendered by successively implementing the features of just one hair, the general interaction of neighbouring hairs, and their interaction with the environment. Adjusting a single one of the features reshapes the whole carpet. This use case helped us realize this could be a powerful tool to quickly and cheaply visualize new products early in the design phase.