# Video Stabilization

Objective

讓手機錄影的影片可以穩定下來。

Related Work

Digital Video Stabilization and Rolling Shutter Correction using Gyroscopes

Method

Can't say too much because it's a company project.

• LG/Panasonic Demo

• Indoor calibration

• HW optimization

• Use some MediaTek only HW to optimize the process https://www.ichub.com/portal/article/index/id/1192/cid/30.html

• DxO Mark

• Power optimization

Result

• 2017 在 DxO Mark 拿到 84 分。

Impact

• 幫助這個演算法從沒有量產 -> 成功在 20+ smartphone 上量產，包含 OPPO R15 等旗艦機，真正讓演算法被 millions of 終端客戶用到。

Knowledge

1. 相機內部參數矩陣

2. 角度轉成2D matrix - Rodriguez formula

3. Homography