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FastDeploy/docs/api/vision_results/matting_result.md
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中文 [English](matting_result_EN.md)
# MattingResult 抠图结果
MattingResult 代码定义在`fastdeploy/vision/common/result.h`用于表明模型预测的alpha透明度的值预测的前景等。
## C++ 定义
`fastdeploy::vision::MattingResult`
```c++
struct MattingResult {
std::vector<float> alpha;
std::vector<float> foreground;
std::vector<int64_t> shape;
bool contain_foreground = false;
void Clear();
std::string Str();
};
```
- **alpha**: 是一维向量为预测的alpha透明度的值值域为[0.,1.]长度为hxwh,w为输入图像的高和宽
- **foreground**: 是一维向量,为预测的前景,值域为[0.,255.]长度为hxwxch,w为输入图像的高和宽c一般为3foreground不是一定有的只有模型本身预测了前景这个属性才会有效
- **contain_foreground**: 表示预测的结果是否包含前景
- **shape**: 表示输出结果的shape当contain_foreground为falseshape只包含(h,w)当contain_foreground为trueshape包含(h,w,c), c一般为3
- **Clear()**: 成员函数,用于清除结构体中存储的结果
- **Str()**: 成员函数将结构体中的信息以字符串形式输出用于Debug
## Python 定义
`fastdeploy.vision.MattingResult`
- **alpha**(list of float): 是一维向量为预测的alpha透明度的值值域为[0.,1.]长度为hxwh,w为输入图像的高和宽
- **foreground**(list of float): 是一维向量,为预测的前景,值域为[0.,255.]长度为hxwxch,w为输入图像的高和宽c一般为3foreground不是一定有的只有模型本身预测了前景这个属性才会有效
- **contain_foreground**(bool): 表示预测的结果是否包含前景
- **shape**(list of int): 表示输出结果的shape当contain_foreground为falseshape只包含(h,w)当contain_foreground为trueshape包含(h,w,c), c一般为3