Function canny

src/api/cpp/canny.cpp:15–20

namespace af {
array canny(const array& in, const cannyThreshold ctType, const float ltr,
            const float htr, const unsigned sW, const bool isFast) {
    af_array temp = 0;
    AF_THROW(af_canny(&temp, in.get(), ctType, ltr, htr, sW, isFast));
    return array(temp);
}
}  // namespace af