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Comment Rendre des Images de Haute Qualité dans Blender?

how-to-render-high-quality-images-in-blender

Dans cet article, Fox Renderfarm, la meilleure ferme de rendu Blender et fournisseur de services de rendu cloud, vous expliquera comment rendre des images de haute qualité dans Blender.

Avec le développement de la technologie informatique, Blender a été largement utilisé dans le domaine de la conception graphique, de sorte que les gens ordinaires ont également la possibilité d'entrer en contact avec la technologie de l'infographie, appelée "technologie CG". L'infographie est également une technologie d'animation 3D par ordinateur, appelée "CGI". Qu'il s'agisse de "Toy Story", du "Roi Lion" ou de "1917", le succès de ces superproductions de classe mondiale ne peut être dissocié de l'établissement de modèles dans les logiciels 3D, puis des effets visuels, de la composition des logiciels de postproduction, du montage, etc.

how to render high-quality images in blender - 1

Image via blendercn.org

Nouvelle star des logiciels 3D, Blender intègre la modélisation, la sculpture, le collage, les particules, l'animation, etc., et c'est un logiciel qui soutient la création commerciale gratuitement pour toujours. Comment utiliser Blender pour produire des images de haute qualité ?

Blender dispose de 2 moteurs de rendu qui peuvent convertir une scène 3D en une image 2D.

● Eevee est un moteur de rendu en temps réel basé sur la physique.

● Cycles est un moteur de rendu par traçage de rayons basé sur la physique.

Utilisez des plugins pour ajouter d'autres moteurs de rendu tiers. Chaque moteur de rendu possède ses propres paramètres de rendu pour contrôler la qualité et les performances du rendu. L'effet de rendu est déterminé par la caméra, l'éclairage et les matériaux, qui déterminent également la qualité des images de sortie.

how to render high-quality images in blender

Image via blendercn.org

Voici, à titre d'exemple, le moteur de rendu Cycles fourni avec Blender. En tant que moteur de rendu basé sur le GPU, les effets de rendu sont devenus de plus en plus matures, et sa vitesse est bien supérieure à celle du moteur de rendu CPU. En quoi cela affecte-t-il la qualité de l'image de sortie ?

Échantillonnage

La méthode d'échantillonnage détermine la manière dont la lumière est calculée. La lumière est émise par la caméra dans la scène et rebondit jusqu'à ce qu'elle trouve une source lumineuse, telle qu'un objet lumineux, un objet brillant ou la lumière ambiante. Nombre de traces du trajet de la lumière pour un seul pixel dans le rendu final. Plus il y a d'échantillons, moins il y aura de bruit dans le résultat et plus il sera précis.

Suivi du chemin

L'attribut de rendu correspond à la quantité de lumière émise par la caméra pour chaque pixel. L'attribut de vue est utilisé pour le rendu de la scène dans la vue. Une valeur de 32 signifie que chaque pixel sera suivi par 32 rayons).

Bruit

Le bruit dans l'image affectera grandement la qualité de l'image car 32 faisceaux de lumière par pixel ne sont pas suffisants pour produire une image de haute qualité (pour réduire le bruit de 50%, il faut doubler le nombre de lumières, donc le temps de rendu doublera également, selon la configuration de l'ordinateur pour définir la valeur, au moins 1024 si vous voulez un meilleur effet.

Propriétés de rendu

Les propriétés de rendu affectent grandement la qualité du rendu, essayez d'ajuster la valeur maximale que la vue peut atteindre, et ajustez la vue à 32 pour maximiser la qualité.

Longueur du trajet optique

Il s'agit de la valeur du nombre de rebonds pour suivre la trajectoire de chaque faisceau. La différence entre 0 et le maximum sera très importante.

Propriétés de la caméra

Taille de l'appareil photo : Il faut un rapport et une taille appropriés, et la longueur focale doit être ajustée en fonction du contenu de l'image. La taille appropriée permet d'afficher les détails de la profondeur de champ.

Profondeur de champ : Le choix de l'objectif influe sur les détails de la profondeur de champ. La profondeur de champ détermine la distance à laquelle l'objet sera affiché clairement.

Rayon d'ouverture : détermine la distance à laquelle l'objet situé dans le rayon est clair et devient flou.

Mise au point : La mise au point doit être ajustée. Définissez les objets importants de l'image comme axes et réglez le rayon d'ouverture approprié pour montrer l'objet correct à l'observateur.

Si vous souhaitez améliorer la qualité des images, vous pouvez essayer certaines des suggestions ci-dessus. L'amélioration de la qualité des images ne se fait pas en lisant un article. L'apprentissage et la pratique continus sont la meilleure façon de procéder.

Cycles est sans aucun doute un jeune moteur de rendu. Blender améliore aussi constamment certaines des fonctionnalités de Cycles, et il y a beaucoup de place pour le développement à l'avenir. En tant que ferme de rendu accréditée par le TPN, Fox Renderfarm prend en charge la plupart des logiciels 3D, des moteurs de rendu et des plugins, y compris Blender, 3ds Max, Maya, Cinema 4D, Unreal Engine et bien d'autres encore. Ainsi, si vous souhaitez utiliser un moteur de rendu autre que cycles, vous pouvez également considérer Fox Renderfarm, qui est sans aucun doute une ferme de rendu puissante, rapide et sûre. Il peut facilement vous aider à rendre des images de haute qualité dans Blender.

Fox Renderfarm espère qu'il vous sera utile. Il est bien connu que Fox Renderfarm est un excellent fournisseur de services de rendu cloud dans le monde de l'image de synthèse, alors si vous avez besoin de trouver une ferme de rendu, pourquoi ne pas essayer Fox Renderfarm, qui offre un essai gratuit de 25 $ aux nouveaux utilisateurs qui s'inscrivent ? Merci de votre attention !

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