Method init

dlib/image_processing/object_detector.h:44–59

        typedef typename image_scanner_type::feature_vector_type feature_vector_type;

        void init (
            const image_scanner_type& 
        ) 
        /*!
            requires
                - w has already been assigned its value.  Note that the point of this
                  function is to allow an image scanner to overload the
                  processed_weight_vector template and provide some different kind of
                  object as the output of get_detect_argument().  For example, the
                  scan_fhog_pyramid object uses an overload that causes
                  get_detect_argument() to return the special fhog_filterbank object
                  instead of a feature_vector_type.  This avoids needing to construct the
                  fhog_filterbank during each call to detect and therefore speeds up
                  detection.
        !*/
        {}

        // return the first argument to image_scanner_type::detect()
        const feature_vector_type& get_detect_argument() const { return w; }