mirror of
https://github.com/RapidAI/RapidOCR.git
synced 2026-11-11 21:40:52 +08:00
471 lines
16 KiB
Python
471 lines
16 KiB
Python
# -*- encoding: utf-8 -*-
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# @Author: SWHL
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# @Contact: liekkaskono@163.com
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import argparse
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import math
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import random
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import traceback
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import warnings
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from io import BytesIO
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from pathlib import Path
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from typing import Dict, List, Optional, Tuple, Union
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import cv2
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import numpy as np
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import yaml
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from onnxruntime import (
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GraphOptimizationLevel,
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InferenceSession,
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SessionOptions,
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get_available_providers,
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get_device,
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)
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from PIL import Image, ImageDraw, ImageFont, UnidentifiedImageError
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root_dir = Path(__file__).resolve().parent
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InputType = Union[str, np.ndarray, bytes, Path]
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class OrtInferSession:
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def __init__(self, config):
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sess_opt = SessionOptions()
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sess_opt.log_severity_level = 4
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sess_opt.enable_cpu_mem_arena = False
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sess_opt.graph_optimization_level = GraphOptimizationLevel.ORT_ENABLE_ALL
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cpu_ep = "CPUExecutionProvider"
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cpu_provider_options = {
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"arena_extend_strategy": "kSameAsRequested",
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}
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cuda_ep = "CUDAExecutionProvider"
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cuda_provider_options = {
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"device_id": 0,
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"arena_extend_strategy": "kNextPowerOfTwo",
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"cudnn_conv_algo_search": "EXHAUSTIVE",
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"do_copy_in_default_stream": True,
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}
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EP_list = []
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if (
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config["use_cuda"]
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and get_device() == "GPU"
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and cuda_ep in get_available_providers()
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):
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EP_list = [(cuda_ep, cuda_provider_options)]
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EP_list.append((cpu_ep, cpu_provider_options))
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self._verify_model(config["model_path"])
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self.session = InferenceSession(
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config["model_path"], sess_options=sess_opt, providers=EP_list
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)
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if config["use_cuda"] and cuda_ep not in self.session.get_providers():
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warnings.warn(
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f"{cuda_ep} is not avaiable for current env, the inference part is automatically shifted to be executed under {cpu_ep}.\n"
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"Please ensure the installed onnxruntime-gpu version matches your cuda and cudnn version, "
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"you can check their relations from the offical web site: "
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"https://onnxruntime.ai/docs/execution-providers/CUDA-ExecutionProvider.html",
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RuntimeWarning,
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)
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def __call__(self, input_content: np.ndarray) -> np.ndarray:
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input_dict = dict(zip(self.get_input_names(), [input_content]))
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try:
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return self.session.run(self.get_output_names(), input_dict)
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except Exception as e:
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error_info = traceback.format_exc()
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raise ONNXRuntimeError(error_info) from e
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def get_input_names(
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self,
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):
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return [v.name for v in self.session.get_inputs()]
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def get_output_names(
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self,
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):
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return [v.name for v in self.session.get_outputs()]
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def get_character_list(self, key: str = "character"):
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return self.meta_dict[key].splitlines()
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def have_key(self, key: str = "character") -> bool:
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self.meta_dict = self.session.get_modelmeta().custom_metadata_map
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if key in self.meta_dict.keys():
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return True
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return False
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@staticmethod
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def _verify_model(model_path):
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model_path = Path(model_path)
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if not model_path.exists():
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raise FileNotFoundError(f"{model_path} does not exists.")
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if not model_path.is_file():
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raise FileExistsError(f"{model_path} is not a file.")
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class ONNXRuntimeError(Exception):
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pass
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class LoadImage:
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def __init__(
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self,
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):
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pass
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def __call__(self, img: InputType) -> np.ndarray:
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if not isinstance(img, InputType.__args__):
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raise LoadImageError(
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f"The img type {type(img)} does not in {InputType.__args__}"
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)
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img = self.load_img(img)
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img = self.convert_img(img)
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return img
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def load_img(self, img: InputType) -> np.ndarray:
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if isinstance(img, (str, Path)):
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self.verify_exist(img)
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try:
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img = np.array(Image.open(img))
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except UnidentifiedImageError as e:
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raise LoadImageError(f"cannot identify image file {img}") from e
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return img
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if isinstance(img, bytes):
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img = np.array(Image.open(BytesIO(img)))
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return img
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if isinstance(img, np.ndarray):
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return img
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raise LoadImageError(f"{type(img)} is not supported!")
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def convert_img(self, img: np.ndarray):
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if img.ndim == 2:
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return cv2.cvtColor(img, cv2.COLOR_GRAY2BGR)
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if img.ndim == 3:
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channel = img.shape[2]
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if channel == 1:
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return cv2.cvtColor(img, cv2.COLOR_GRAY2BGR)
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if channel == 2:
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return self.cvt_two_to_three(img)
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if channel == 4:
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return self.cvt_four_to_three(img)
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if channel == 3:
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return cv2.cvtColor(img, cv2.COLOR_RGB2BGR)
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raise LoadImageError(
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f"The channel({channel}) of the img is not in [1, 2, 3, 4]"
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)
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raise LoadImageError(f"The ndim({img.ndim}) of the img is not in [2, 3]")
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@staticmethod
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def cvt_four_to_three(img: np.ndarray) -> np.ndarray:
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"""RGBA → BGR"""
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r, g, b, a = cv2.split(img)
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new_img = cv2.merge((b, g, r))
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not_a = cv2.bitwise_not(a)
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not_a = cv2.cvtColor(not_a, cv2.COLOR_GRAY2BGR)
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new_img = cv2.bitwise_and(new_img, new_img, mask=a)
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new_img = cv2.add(new_img, not_a)
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return new_img
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@staticmethod
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def cvt_two_to_three(img: np.ndarray) -> np.ndarray:
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"""gray + alpha → BGR"""
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img_gray = img[..., 0]
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img_bgr = cv2.cvtColor(img_gray, cv2.COLOR_GRAY2BGR)
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img_alpha = img[..., 1]
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not_a = cv2.bitwise_not(img_alpha)
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not_a = cv2.cvtColor(not_a, cv2.COLOR_GRAY2BGR)
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new_img = cv2.bitwise_and(img_bgr, img_bgr, mask=img_alpha)
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new_img = cv2.add(new_img, not_a)
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return new_img
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@staticmethod
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def verify_exist(file_path: Union[str, Path]):
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if not Path(file_path).exists():
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raise LoadImageError(f"{file_path} does not exist.")
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class LoadImageError(Exception):
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pass
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def read_yaml(yaml_path):
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with open(yaml_path, "rb") as f:
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data = yaml.load(f, Loader=yaml.Loader)
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return data
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def concat_model_path(config):
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key = "model_path"
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config["Det"][key] = str(root_dir / config["Det"][key])
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config["Rec"][key] = str(root_dir / config["Rec"][key])
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config["Cls"][key] = str(root_dir / config["Cls"][key])
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return config
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def init_args():
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parser = argparse.ArgumentParser()
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parser.add_argument("-img", "--img_path", type=str, default=None, required=True)
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parser.add_argument("-p", "--print_cost", action="store_true", default=False)
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global_group = parser.add_argument_group(title="Global")
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global_group.add_argument("--text_score", type=float, default=0.5)
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global_group.add_argument("--no_det", action="store_true", default=False)
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global_group.add_argument("--no_cls", action="store_true", default=False)
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global_group.add_argument("--no_rec", action="store_true", default=False)
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global_group.add_argument("--print_verbose", action="store_true", default=False)
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global_group.add_argument("--min_height", type=int, default=30)
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global_group.add_argument("--width_height_ratio", type=int, default=8)
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det_group = parser.add_argument_group(title="Det")
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det_group.add_argument("--det_use_cuda", action="store_true", default=False)
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det_group.add_argument("--det_model_path", type=str, default=None)
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det_group.add_argument("--det_limit_side_len", type=float, default=736)
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det_group.add_argument(
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"--det_limit_type", type=str, default="min", choices=["max", "min"]
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)
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det_group.add_argument("--det_thresh", type=float, default=0.3)
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det_group.add_argument("--det_box_thresh", type=float, default=0.5)
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det_group.add_argument("--det_unclip_ratio", type=float, default=1.6)
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det_group.add_argument(
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"--det_donot_use_dilation", action="store_true", default=False
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)
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det_group.add_argument(
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"--det_score_mode", type=str, default="fast", choices=["slow", "fast"]
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)
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cls_group = parser.add_argument_group(title="Cls")
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cls_group.add_argument("--cls_use_cuda", action="store_true", default=False)
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cls_group.add_argument("--cls_model_path", type=str, default=None)
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cls_group.add_argument("--cls_image_shape", type=list, default=[3, 48, 192])
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cls_group.add_argument("--cls_label_list", type=list, default=["0", "180"])
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cls_group.add_argument("--cls_batch_num", type=int, default=6)
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cls_group.add_argument("--cls_thresh", type=float, default=0.9)
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rec_group = parser.add_argument_group(title="Rec")
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rec_group.add_argument("--rec_use_cuda", action="store_true", default=False)
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rec_group.add_argument("--rec_model_path", type=str, default=None)
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rec_group.add_argument("--rec_img_shape", type=list, default=[3, 48, 320])
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rec_group.add_argument("--rec_batch_num", type=int, default=6)
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vis_group = parser.add_argument_group(title="Visual Result")
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vis_group.add_argument("-vis", "--vis_res", action="store_true", default=False)
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vis_group.add_argument(
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"--vis_font_path",
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type=str,
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default=None,
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help="When -vis is True, the font_path must have value.",
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)
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vis_group.add_argument(
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"--vis_save_path",
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type=str,
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default=".",
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help="The directory of saving the vis image.",
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)
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args = parser.parse_args()
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return args
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class UpdateParameters:
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def __init__(self) -> None:
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pass
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def parse_kwargs(self, **kwargs):
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global_dict, det_dict, cls_dict, rec_dict = {}, {}, {}, {}
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for k, v in kwargs.items():
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if k.startswith("det"):
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k = k.split("det_")[1]
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if k == "donot_use_dilation":
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k = "use_dilation"
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v = not v
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det_dict[k] = v
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elif k.startswith("cls"):
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cls_dict[k] = v
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elif k.startswith("rec"):
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rec_dict[k] = v
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else:
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global_dict[k] = v
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return global_dict, det_dict, cls_dict, rec_dict
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def __call__(self, config, **kwargs):
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global_dict, det_dict, cls_dict, rec_dict = self.parse_kwargs(**kwargs)
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new_config = {
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"Global": self.update_global_params(config["Global"], global_dict),
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"Det": self.update_params(config["Det"], det_dict, "det_", None),
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"Cls": self.update_params(
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config["Cls"],
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cls_dict,
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"cls_",
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["cls_label_list", "cls_model_path", "cls_use_cuda"],
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),
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"Rec": self.update_params(
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config["Rec"], rec_dict, "rec_", ["rec_model_path", "rec_use_cuda"]
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),
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}
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return new_config
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def update_global_params(self, config, global_dict):
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if global_dict:
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config.update(global_dict)
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return config
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def update_params(
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self,
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config,
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param_dict: Dict[str, str],
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prefix: str,
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need_remove_prefix: Optional[List[str]] = None,
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):
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if not param_dict:
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return config
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filter_dict = self.remove_prefix(param_dict, prefix, need_remove_prefix)
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model_path = filter_dict.get("model_path", None)
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if not model_path:
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filter_dict["model_path"] = str(root_dir / config["model_path"])
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config.update(filter_dict)
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return config
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@staticmethod
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def remove_prefix(
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config: Dict[str, str],
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prefix: str,
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need_remove_prefix: Optional[List[str]] = None,
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) -> Dict[str, str]:
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if not need_remove_prefix:
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return config
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new_rec_dict = {}
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for k, v in config.items():
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if k in need_remove_prefix:
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k = k.split(prefix)[1]
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new_rec_dict[k] = v
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return new_rec_dict
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class VisRes:
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def __init__(
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self, font_path: Optional[Union[str, Path]] = None, text_score: float = 0.5
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):
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if font_path is None or not Path(font_path).exists():
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raise FileNotFoundError(
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f"The {font_path} does not exists! \n"
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f"You could download the file in the https://drive.google.com/file/d/1evWVX38EFNwTq_n5gTFgnlv8tdaNcyIA/view?usp=sharing"
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)
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self.font_path = str(font_path)
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self.text_score = text_score
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self.load_img = LoadImage()
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def __call__(
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self,
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img_content: InputType,
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dt_boxes: np.ndarray,
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txts: Optional[Union[List[str], Tuple[str]]] = None,
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scores: Optional[Tuple[float]] = None,
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) -> np.ndarray:
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img = self.load_img(img_content)
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img = Image.fromarray(img)
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if txts is None and scores is None:
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return self.draw_dt_boxes(img, dt_boxes)
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return self.draw_ocr_box_txt(img, dt_boxes, txts, scores)
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def draw_dt_boxes(self, img: Image, dt_boxes: np.ndarray) -> np.ndarray:
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img_temp = img.copy()
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draw_img = ImageDraw.Draw(img_temp)
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for idx, box in enumerate(dt_boxes):
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draw_img.polygon(np.array(box), fill=self.get_random_color())
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box_height = self.get_box_height(box)
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font_size = max(int(box_height * 0.8), 10)
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font = ImageFont.truetype(self.font_path, font_size, encoding="utf-8")
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draw_img.polygon(
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np.array(box).reshape(8).tolist(),
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outline=(0, 0, 0),
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)
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draw_img.text([box[0][0], box[0][1]], str(idx), fill=(0, 0, 0), font=font)
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return np.array(img_temp)
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def draw_ocr_box_txt(self, image: Image, boxes, txts, scores=None):
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h, w = image.height, image.width
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if image.mode == "L":
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image = image.convert("RGB")
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img_left = image.copy()
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img_right = Image.new("RGB", (w, h), (255, 255, 255))
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random.seed(0)
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draw_left = ImageDraw.Draw(img_left)
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draw_right = ImageDraw.Draw(img_right)
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for idx, (box, txt) in enumerate(zip(boxes, txts)):
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if scores is not None and float(scores[idx]) < self.text_score:
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continue
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color = self.get_random_color()
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draw_left.polygon(np.array(box), fill=color)
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draw_right.polygon(
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np.array(box).reshape(8).tolist(),
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outline=color,
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)
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box_height = self.get_box_height(box)
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box_width = self.get_box_width(box)
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if box_height > 2 * box_width:
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font_size = max(int(box_width * 0.9), 10)
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font = ImageFont.truetype(self.font_path, font_size, encoding="utf-8")
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cur_y = box[0][1]
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for c in txt:
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char_size = font.getsize(c)
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draw_right.text(
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(box[0][0] + 3, cur_y), c, fill=(0, 0, 0), font=font
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)
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cur_y += char_size[1]
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else:
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font_size = max(int(box_height * 0.8), 10)
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font = ImageFont.truetype(self.font_path, font_size, encoding="utf-8")
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draw_right.text([box[0][0], box[0][1]], txt, fill=(0, 0, 0), font=font)
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img_left = Image.blend(image, img_left, 0.5)
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img_show = Image.new("RGB", (w * 2, h), (255, 255, 255))
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img_show.paste(img_left, (0, 0, w, h))
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img_show.paste(img_right, (w, 0, w * 2, h))
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return np.array(img_show)
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@staticmethod
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def get_random_color():
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return (
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random.randint(0, 255),
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random.randint(0, 255),
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random.randint(0, 255),
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)
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@staticmethod
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def get_box_height(box: List[List[float]]) -> float:
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return math.sqrt((box[0][0] - box[3][0]) ** 2 + (box[0][1] - box[3][1]) ** 2)
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@staticmethod
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def get_box_width(box: List[List[float]]) -> float:
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return math.sqrt((box[0][0] - box[1][0]) ** 2 + (box[0][1] - box[1][1]) ** 2)
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