Map projection transformation is a new research and application field of mathematical cartography.
地图投影变换是数学制图学的一个新的研究和应用领域。
A new nonlinear optimization method called variable metric gradient projection method is presented. It is a combination of mathematical programming with optimality criterion.
本文将数学规划法与优化准则法有机地结合起来，导出了一种新的优化方法——变尺度梯度投影法。
On this basis, mathematical model of depth recovery according to "circle-depth relation" algorithm and projection rules was constructed.
在此基础上，构建了基于“半径—深度”算法和空间投影关系的深度恢复模型。
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