The Build lens node can be used to construct a lens model from multiple images of a calibration grid, such as a checker-board pattern, taken at different camera focal lengths.

构建透镜节点可以用来构造一个透镜模型从多个图像的校准网格，如棋盘式格局，取不同的相机焦距。

youdao

youdao

If you want a specific pattern, it can help if you design it on a bead board first.

如果你想有一个特定的模式，它可以帮助你设计一个珠子委员会第一次了。

youdao

Birds-eye figure is (surprise) a grain pattern reminiscent of hundreds of small bird's eyes scattered across the face of a board or veneer.

NPR: Excerpt: 'A Splintered History Of Wood'