基于PhotoScan的模型生成技术

本文介绍了利用PhotoScan软件基于360度照片生成高精度3D模型的过程,并展示了不同模式的效果,如带纹理模型、网格模式、顶点色模型和纯色模型。这种技术能有效缩短美术开发周期,提升作品质量,特别是在游戏行业的次时代制作中具有广阔应用前景。

基于图片生成模型的技术早已存在,也有若干软件可以模拟。俄毛子的PhotoScan软件,可以基于一组360度照片,生成逼真的高精度模型。从FoxEngine的实现上,不难看出,未来几年的次时代制作将是高度逼真的模型。所以,基于照片生成高模的技术可以作为次时代美术必不可少的辅助软件。

下面,我进行了简单的尝试,并附以简单效果截图。这里先是一组各个角度的照片素材。

 

通过PhotoScan,可以生成模型,这里限制为2000个面,不同模式截图如下:

带纹理模型



网格模式模型

Agisoft PhotoScan Professional 1.4.5 Build 7354 (x86/x64) Multilingual | 120/142 MB Agisoft PhotoScan is an advanced image-based 3D modeling solution aimed at creating professional quality 3D content from still images. Based on the latest multi-view 3D reconstruction technology, it operates with arbitrary images and is efficient in both controlled and uncontrolled conditions. Photos can be taken from any position, providing that the object to be reconstructed is visible on at least two photos. Both image alignment and 3D model reconstruction are fully automated. Main Features • Aerial and close-range triangulation • Point cloud generation (sparse / dense) • Polygonal model generation (plain / textured) • Setting coordinate system • Digital Elevation Model (DEM) generation • True orthophoto generaton • Georeferencing using flight log and / or GCPs • Multispectral imagery processing • 4D reconstruction for dynamic scenes • Python scripting support System Requirements: - In most cases the maximum project size that can be processed is limited by the amount of RAM available. Therefore it is important to select the platform allowing to install required amount of RAM. - Complex geometry reconstruction algorithms need a lot of computational resources for processing. A high speed multi core CPU (3GHz+) is recommended. - Agisoft PhotoScan supports GPU acceleration for image matching and dense cloud generation steps, so high-end OpenCL or CUDA-compatible graphics card can speed up the processing. Home Page - http://www.agisoft.com/
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