signedGradient    348 modules/objdetect/include/opencv2/objdetect.hpp         free_coef(-1.f), nlevels(HOGDescriptor::DEFAULT_NLEVELS), signedGradient(false)
signedGradient    359 modules/objdetect/include/opencv2/objdetect.hpp     gammaCorrection(_gammaCorrection), free_coef(-1.f), nlevels(_nlevels), signedGradient(_signedGradient)