---
title: KeyPointInfo
description: "面部关键点（左/右眼、鼻尖、左/右嘴角）坐标信息。"
url: https://www.hiascend.com/document/detail/zh/Atlas200IDKA2DeveloperKit/latest/Application%20Development%20Guide/msadg/mxvisionug_0181.html
sourcePath: /source/zh/Atlas200IDKA2DeveloperKit/23.0.RC2/Application Development Guide/msadg/mxvisionug_0181.html
indexId: e62813792e02d5b9c21110d0fae6fd104f3c7b8df75f20b02528b21b7ae61a8f102
---
# KeyPointInfo

#### 功能

面部关键点（左/右眼、鼻尖、左/右嘴角）坐标信息。


#### 结构定义

```
struct KeyPointInfo {
float kPBefore[LANDMARK_LEN];
};
```


#### 参数说明

| 参数名 | 输入/输出 | 说明 |
| --- | --- | --- |
| kPBefore | 输入 | 关键点坐标数组。 |