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Update g2o图优化.md
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Ewenwan authored May 11, 2018
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4 changes: 2 additions & 2 deletions vSLAM/g2o图优化.md
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Expand Up @@ -172,10 +172,10 @@ X0 = 0, X1 = 1.01, l2 = 1.9


## 2.4.1 高斯牛顿迭代
> **Δx = - Hk逆 * bk = -(J转置* Ω * J)逆 * ek转置 * Ω * J**
**Δx = - Hk逆 * bk = -(J转置* Ω * J)逆 * ek转置 * Ω * J**

## 2.4.2 莱文贝格-马夸特迭代
> **Δx = -(Hk + a * I) 逆 * bk = -(J转置* Ω * J + a * I )逆 * ek转置 * Ω * J ** 引入一个松弛因子来控制迭代速度
**Δx = -(Hk + a * I) 逆 * bk = -(J转置* Ω * J + a * I )逆 * ek转置 * Ω * J** 引入一个松弛因子来控制迭代速度

## 2.5更新算法
> x* = x' + Δx,这里的加法不是简单的加法,是一个增量来更新 X ,这里需要指定更新方式。
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