RICOH Blog Post: "Running OpenCV in Your RICOH THETA"

I had similar environment, I revisited to ensure that my environment matches with above images and still no luck. Below is the code snippet I added to SDK,

HOGDescriptor hog;
hog.setSVMDetector(HOGDescriptor::getDefaultPeopleDetector());

vector<Rect> found, found_filtered;
hog.detectMultiScale(m_src, found, 0, Size(8,8), Size(32,32), 1.05, 2);

Thanks,
Nitin