This paper presents a bas-relief generation algorithm from scattered point cloud directly. Compared with the popular gradient domain methods for mesh surface, this algorithm takes normal vectors as the operation object, making it independent of topology connection, thus more suitable for point clouds and easier to implement. By constructing linear equations of the bas-relief height and using the solution strategy of the subspace, this algorithm can adjustment the bas-relief effect in real-time relying on the computing power of a consumer CPU only. In addition, we also propose an iterative solution to generate a bas-relief model of a specified height. The experimental results indicate that our algorithm provides a unified solution for generating different types of bas-relief with good saturation and rich details.

本文直接提出了一种基于散点云的浅浮雕生成算法。与流行的网格表面梯度域方法相比，该算法以法向向量为操作对象，使其独立于拓扑连接，因此更适合于点云且易于实现。通过构造浮雕高度的线性方程式并使用子空间的求解策略，该算法仅依靠用户CPU的计算能力就可以实时调整浮雕效果。此外，我们还提出了一种迭代解决方案，以生成指定高度的浅浮雕模型。实验结果表明，我们的算法为生成具有良好饱和度和丰富细节的不同类型的浮雕提供了统一的解决方案。