多屏拼接可以实现不同幅面的集成成像光场三维（3D）显示，但是3D片源生成过程十分复杂。为此，提出一个3D片源渲染平台，该平台可为多屏拼接的集成成像光场3D显示提供片源，使得再现的3D图像正确且无错位。在3D片源渲染过程中，首先计算出微图像阵列的分辨率等参数，利用开放式图形库（OpenGL）渲染出初始微图像阵列；然后，对初始微图像阵列进行拆分、投影变换及重拼接，得到用于拼接集成成像光场3D显示的微图像阵列；将3D片源渲染程序使用应用程序开发框架（Qt）封装为可视化3D片源渲染平台，该平台支持.obj和.fbx等格式的3D模型输入以及16K及以上分辨率的微图像阵列输出。实验结果表明，将3D片源渲染平台生成的微图像阵列用于双8K屏拼接的集成成像光场3D显示器上，可显示正确的3D图像。该3D片源渲染平台可满足多屏拼接的集成成像光场3D显示内容生成需求，有望在展览展示等领域得到应用。

Multiscreen splicing can realize integral imaging light field 3D displays with various sizes; however, the 3D source generation process is complex. This study proposes a 3D source rendering platform that can provide sources for the multiscreen splicing realized integral imaging light field 3D display. The obtained 3D images can be reproduced accurately without misalignment. In the process of the 3D source rendering, first, the parameters such as the resolution of an elemental image array are calculated. The Open Graphics Library (OpenGL) is employed to render an initial elemental image array. Second, an elemental image array for the splicing realized integral imaging light field 3D display is obtained by splitting the initial elemental image array, using the projection transform, and splicing the sub-elemental image array. The 3D source rendering program is packaged as a visual 3D source rendering platform based on Qt (Application Development Framework), which supports the input of multiple formats of 3D models, such as .obj and .fbx, as well as the output of an elemental image array with resolution of 16K and above. The experimental results demonstrate that the elemental image array generated using the 3D source rendering platform can realize an accurate 3D image on an integral imaging light field 3D display that is spliced using dual 8K resolution screens. The proposed 3D source rendering platform can meet the 3D source generation needs of the multiscreen splicing realized integral imaging light field 3D display, which can be used during exhibitions and in other fields.