demo.py 文件源码

def get_detector(net, prefix, epoch, data_shape, mean_pixels, ctx,
                 nms_thresh=0.5, force_nms=True):
    """
    wrapper for initialize a detector

    Parameters:
    ----------
    net : str
        test network name
    prefix : str
        load model prefix
    epoch : int
        load model epoch
    data_shape : int
        resize image shape
    mean_pixels : tuple (float, float, float)
        mean pixel values (R, G, B)
    ctx : mx.ctx
        running context, mx.cpu() or mx.gpu(?)
    force_nms : bool
        force suppress different categories
    """
    sys.path.append(os.path.join(os.getcwd(), 'symbol'))
    net = importlib.import_module("symbol_" + net) \
        .get_symbol(len(CLASSES), nms_thresh, force_nms)
    detector = Detector(net, prefix + "_" + str(data_shape), epoch, \
        data_shape, mean_pixels, ctx=ctx)
    return detector