The online simulation, created by the French3D design company Dassault Systmes, with the guidanceof veterinary ophthalmologist (眼科专家)DidierSchmidt-Morand, mimics (模仿)the vision of five animals cats dogs, rats, hawks and bees as aplayer steers them through Place Vend洀攀 in Paris.
Due to differences in field of view, colourperception and night vision, for example, sight can be drastically differentfrom species to species. In terms of performance, eyes are as variable asdifferent models of cars, says Schmidt-Morand.
The game was created by using existingvirtual models of the square then applying effects based on descriptions ofeach animals vision. Dassaults 3D software allows a scene to be modified byadding blur or changing the colours, angle of vision and depth of field.
Although it was easy to recreate visioninferior to that of humans cats and dogs, forexample, have trouble distinguishing shades of red replicating features that we are unable to see was a challenge. Hawks have moredetailed vision than ours, whereas dogs are better at seeing movement and havea wider field of view. We used virtual cameras to precisely simulatelarger viewing angles but the result made people nauseous(令人作呕的), says Schmidt-Morand. So we tweaked(微调) the model to give a sense of the wider view without sticking toreality.
The rats view also departs from reality:because they are near-sighted, everything more than 15 centimetres away is ablur, so they typically move close to walls to help them navigate. A ratwould never throw itself into the middle of an open area, saysSchmidt-Morand. The simulation for this animal is supplemented with a map inthe top right corner to help determine the rats position: because of theirlimited eyesight, most landmarks are obscured.
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