OpenCV Error: Assertion failed

[lyfighting]

您好，感谢您分享的代码，风格很清晰。 我在跑detection.cpp时，在226行 Result = -1 * alphamat * svecsmat; 报opencv的错：

“OpenCV Error: Assertion failed (a_size.width == len) in cv::gemm, file C:\build\master_winpack-build-win64-vc14\opencv\modules\core\src\matmul.cpp, line 1565...”

网上答案像是矩阵维度不符，你有什么建议吗？还有我用的opencv版本是3.4.0，请问你用的是哪个版本？

[lyfighting]

您好，我看下了，确实是alphamat（11）与svecsmat（33780）维度不符合，但是为什么会这样呢？

[northeast250]

Starting training... Finishing training... loaded SVM_HOG.xml file after initialize the value of alphamat is [3780 x 3] after initialize the value of svindex is [3 x 1] the value of rho is 1 the value of alphamat is [1] the size of alphamat is [1 x 1] the size of svecsmat is [3780 x 3] libc++abi.dylib: terminating with uncaught exception of type cv::Exception: OpenCV(4.1.1) /tmp/opencv-20190908-41416-17rm3ol/opencv-4.1.1/modules/core/src/matmul.dispatch.cpp:344: error: (-215:Assertion failed) a_size.width == len in function 'gemm'

Process finished with exit code 6

[northeast250]

我也遇到了这个问题@lyfighting 其中alpha初始化的维度还是对的，变换以后就不对了。

[horo2016]

也是同样问题 double rho = svm ->getDecisionFunction(0, alphamat, svindex); 这句后出现问题