utils.py 文件源码

def get_image(filepath, image_target, image_size):

    img = imread(filepath).astype(np.float)
    h_origin, w_origin = img.shape[:2]

    if image_target > h_origin or image_target > w_origin:
        image_target = min(h_origin, w_origin)

    h_drop = int((h_origin - image_target)/2)    
    w_drop = int((w_origin - image_target)/2)

    if img.ndim == 2:
        img = np.tile(img.reshape(h_origin, w_origin, 1), (1,1,3))

    img_crop = img[h_drop:h_drop+image_target, w_drop:w_drop+image_target, :]

    img_resize = imresize(img_crop, [image_size, image_size])

    return np.array(img_resize)/127.5 - 1.