(-215:Assertion failed) dst.data == (uchar*)dst_ptr in function 'cvShowImage'

 

(-215:Assertion failed) dst.data == (uchar*)dst_ptr in function 'cvShowImage'

 

原因：图像只支持uint8类型数据，正确代码：

 

pybind代码：

aaa= binddemo.proxy_init3F(3.0)
aaa=aaa.astype(np.uint8)

# aaa=cv2.imread("d:/f1.jpg")
cv2.imshow("a",aaa)
cv2.waitKeyEx()

 

m.def("proxy_init3F", [](double start) {
        py::array_t a({ 3, 3, 3 });
        auto r = a.mutable_unchecked<3>();
        for (ssize_t k = 0; k < r.shape(2); k++)
            for (ssize_t j = 0; j < r.shape(1); j++)
                for (ssize_t i = 0; i < r.shape(0); i++)
                    r(i, j, k) = start++;
        return a;
    });