cv::CascadeClassifier()
时间: 2024-06-07 13:08:47 浏览: 17
cv::CascadeClassifier() 是 OpenCV 库中的一个类,用于对象检测。具体来说,它是基于 Haar 特征的级联分类器,可以用于检测人脸、行人等物体。在使用该类之前,需要通过训练得到一个分类器模型文件,然后将该文件加载到 CascadeClassifier 对象中。使用该对象的 detectMultiScale() 方法可以对图像中的物体进行检测,并返回它们的位置和大小等信息。
相关问题
undefined reference to `cv::CascadeClassifier::CascadeClassifier()'
This error message usually occurs when you are trying to use the cv::CascadeClassifier class in your code, but have not properly included the necessary OpenCV libraries or have not linked to them correctly.
To fix this error, you need to make sure that you have included the following header file at the top of your code:
```cpp
#include <opencv2/objdetect/objdetect.hpp>
```
Additionally, you need to link to the OpenCV libraries when compiling your code. This can be done by adding the following flag to your compile command:
```
-lopencv_objdetect
```
If you are using an IDE like Visual Studio or Xcode, you should be able to add the necessary libraries to your project settings.
Once you have properly included the necessary libraries and linked to them correctly, the error should be resolved and you should be able to use the cv::CascadeClassifier class in your code without any issues.
cv::cascadeclassifier::detectmultiscale
cv::CascadeClassifier::detectMultiScale是OpenCV中的一个函数,用于在图像中检测多个对象。它使用级联分类器算法,可以检测出不同大小和方向的对象。该函数可以设置多个参数,如缩放比例、最小邻域数、最小对象大小等,以便更好地适应不同的场景。
相关推荐
![pdf](https://img-home.csdnimg.cn/images/20210720083512.png)
![rar](https://img-home.csdnimg.cn/images/20210720083606.png)
![docx](https://img-home.csdnimg.cn/images/20210720083331.png)
![-](https://csdnimg.cn/download_wenku/file_type_column_c1.png)
![-](https://csdnimg.cn/download_wenku/file_type_column_c1.png)
![-](https://csdnimg.cn/download_wenku/file_type_column_c1.png)
![-](https://csdnimg.cn/download_wenku/file_type_column_c1.png)
![-](https://csdnimg.cn/download_wenku/file_type_column_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)