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SHARP - Apple's open-source 3D scene generation AI model

SHARP is an open-source AI model from Apple that can convert a single 2D photo into a realistic 3D scene in less than a second. The model uses 3D Gaussian representation technology and a neural network with a single feedforward pass to quickly predict the 3D representation of the scene...

What is SHARP?

SHARP is an open-source AI model from Apple that can convert a single 2D photo into a realistic 3D scene in less than one second. The model uses 3D Gaussian representation technology and a neural network with a single feedforward pass to quickly predict the 3D structure and details of a scene. Compared to traditional methods, SHARP improves synthesis speed by three orders of magnitude and performs exceptionally well on multiple benchmarks, reducing LPIPS by 25%–34% and DISTS by 21%–43%, while generating 3D views that are more closely resemble the real world in detail and structure.

SHARP's main functions

  • Quick View CompositionIn less than 1 second, a 3D scene is generated through a single neural network feedforward pass.
  • High-resolution renderingIt supports real-time rendering of high-resolution 3D views, with rich details and realistic structure.
  • Absolute Scale SupportThe model generates 3D scenes with absolute scale, supporting realistic camera motion simulation.
  • Zero-shot generalizationIt performs well on multiple datasets, can generalize to unseen scenarios, and has good robustness.
  • High efficiency and high qualityCompared to traditional methods, the synthesis speed is increased by three orders of magnitude, while the image quality is significantly better than existing technologies.

SHARP's technical principles

  • 3D Gaussian representation:Objects and structures in a scene are represented as Gaussian distributions (Gaussian spheres) with information on color, position, and shape.This representation method can efficiently capture the geometric and appearance information of a scene, while supporting efficient rendering.
  • Neural Network Regression:The parameters of a 3D Gaussian representation of a scene are regressed from a single 2D photograph using a deep neural network.The network is trained using massive amounts of synthetic and real-world data to learn general depth and geometric patterns.
  • Rapid modeling and rendering:When processing new photos, the model quickly predicts the location, size, and appearance of millions of Gaussian distributions through a single feedforward pass.The generated 3D scenes support real-time rendering and can run at over 100 frames per second on a standard GPU.

SHARP's project address

  • Project official websitehttps://apple.github.io/ml-sharp/
  • GitHub repositoryhttps://github.com/apple/ml-sharp
  • arXiv technical paperhttps://arxiv.org/pdf/2512.10685

SHARP Application Scenarios

  • Virtual scene constructionBy quickly converting a single photograph into a 3D scene, SHARP can provide realistic virtual environments for VR and AR applications, enhancing the user experience.
  • Film and television productionIt can quickly generate high-quality 3D scenes for special effects production in movies, TV series, and commercials, saving time and costs.
  • Environmental modelingIt can quickly generate 3D maps of the surrounding environment, helping autonomous vehicles and robots to better understand the scene, plan paths, and navigate.
  • Digitalization of cultural relics: Quickly generate 3D models of cultural relics from a single photograph for digital preservation and display of cultural heritage.
  • Virtual LaboratoryIt provides students with a virtual experimental environment, enhancing their learning experience through 3D scenes.