predict_system.py 5.8 KB
Newer Older
L
LDOUBLEV 已提交
1 2 3 4 5 6 7 8 9 10 11 12 13
# Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
14 15
import os
import sys
16
__dir__ = os.path.dirname(os.path.abspath(__file__))
17
sys.path.append(__dir__)
18
sys.path.append(os.path.abspath(os.path.join(__dir__, '../..')))
L
LDOUBLEV 已提交
19 20

import tools.infer.utility as utility
L
LDOUBLEV 已提交
21 22 23
from ppocr.utils.utility import initial_logger
logger = initial_logger()
import cv2
L
LDOUBLEV 已提交
24 25
import tools.infer.predict_det as predict_det
import tools.infer.predict_rec as predict_rec
L
LDOUBLEV 已提交
26 27 28 29
import copy
import numpy as np
import math
import time
L
LDOUBLEV 已提交
30 31 32
from ppocr.utils.utility import get_image_file_list
from PIL import Image
from tools.infer.utility import draw_ocr
33
from tools.infer.utility import draw_ocr_box_txt
L
LDOUBLEV 已提交
34 35 36 37 38 39 40 41


class TextSystem(object):
    def __init__(self, args):
        self.text_detector = predict_det.TextDetector(args)
        self.text_recognizer = predict_rec.TextRecognizer(args)

    def get_rotate_crop_image(self, img, points):
42
        '''
L
LDOUBLEV 已提交
43 44 45 46 47 48 49 50
        img_height, img_width = img.shape[0:2]
        left = int(np.min(points[:, 0]))
        right = int(np.max(points[:, 0]))
        top = int(np.min(points[:, 1]))
        bottom = int(np.max(points[:, 1]))
        img_crop = img[top:bottom, left:right, :].copy()
        points[:, 0] = points[:, 0] - left
        points[:, 1] = points[:, 1] - top
51 52 53 54 55 56 57 58 59
        '''
        img_crop_width = int(max(np.linalg.norm(points[0] - points[1]),
                                 np.linalg.norm(points[2] - points[3])))
        img_crop_height = int(max(np.linalg.norm(points[0] - points[3]),
                                  np.linalg.norm(points[1] - points[2])))
        pts_std = np.float32([[0, 0],
                              [img_crop_width, 0],
                              [img_crop_width, img_crop_height],
                              [0, img_crop_height]])
L
LDOUBLEV 已提交
60
        M = cv2.getPerspectiveTransform(points, pts_std)
61 62 63
        dst_img = cv2.warpPerspective(img, M, (img_crop_width, img_crop_height),
                                      borderMode=cv2.BORDER_REPLICATE,
                                      flags=cv2.INTER_CUBIC)
L
LDOUBLEV 已提交
64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80
        dst_img_height, dst_img_width = dst_img.shape[0:2]
        if dst_img_height * 1.0 / dst_img_width >= 1.5:
            dst_img = np.rot90(dst_img)
        return dst_img

    def print_draw_crop_rec_res(self, img_crop_list, rec_res):
        bbox_num = len(img_crop_list)
        for bno in range(bbox_num):
            cv2.imwrite("./output/img_crop_%d.jpg" % bno, img_crop_list[bno])
            print(bno, rec_res[bno])

    def __call__(self, img):
        ori_im = img.copy()
        dt_boxes, elapse = self.text_detector(img)
        if dt_boxes is None:
            return None, None
        img_crop_list = []
81 82 83

        dt_boxes = sorted_boxes(dt_boxes)

L
LDOUBLEV 已提交
84 85 86 87 88
        for bno in range(len(dt_boxes)):
            tmp_box = copy.deepcopy(dt_boxes[bno])
            img_crop = self.get_rotate_crop_image(ori_im, tmp_box)
            img_crop_list.append(img_crop)
        rec_res, elapse = self.text_recognizer(img_crop_list)
89
        # self.print_draw_crop_rec_res(img_crop_list, rec_res)
L
LDOUBLEV 已提交
90 91 92
        return dt_boxes, rec_res


93 94 95 96
def sorted_boxes(dt_boxes):
    """
    Sort text boxes in order from top to bottom, left to right
    args:
T
tink2123 已提交
97
        dt_boxes(array):detected text boxes with shape [4, 2]
98 99 100 101
    return:
        sorted boxes(array) with shape [4, 2]
    """
    num_boxes = dt_boxes.shape[0]
102
    sorted_boxes = sorted(dt_boxes, key=lambda x: (x[0][1], x[0][0]))
103 104 105 106 107 108 109 110 111 112 113
    _boxes = list(sorted_boxes)

    for i in range(num_boxes - 1):
        if abs(_boxes[i+1][0][1] - _boxes[i][0][1]) < 10 and \
            (_boxes[i + 1][0][0] < _boxes[i][0][0]):
            tmp = _boxes[i]
            _boxes[i] = _boxes[i + 1]
            _boxes[i + 1] = tmp
    return _boxes


114
def main(args):
L
LDOUBLEV 已提交
115
    image_file_list = get_image_file_list(args.image_dir)
L
LDOUBLEV 已提交
116
    text_sys = TextSystem(args)
L
LDOUBLEV 已提交
117
    is_visualize = True
L
LDOUBLEV 已提交
118 119 120 121 122 123 124 125 126 127 128 129 130
    for image_file in image_file_list:
        img = cv2.imread(image_file)
        if img is None:
            logger.info("error in loading image:{}".format(image_file))
            continue
        starttime = time.time()
        dt_boxes, rec_res = text_sys(img)
        elapse = time.time() - starttime
        print("Predict time of %s: %.3fs" % (image_file, elapse))
        dt_num = len(dt_boxes)
        dt_boxes_final = []
        for dno in range(dt_num):
            text, score = rec_res[dno]
L
LDOUBLEV 已提交
131
            if score >= 0.5:
L
LDOUBLEV 已提交
132 133 134
                text_str = "%s, %.3f" % (text, score)
                print(text_str)
                dt_boxes_final.append(dt_boxes[dno])
L
LDOUBLEV 已提交
135 136 137 138 139 140 141

        if is_visualize:
            image = Image.fromarray(cv2.cvtColor(img, cv2.COLOR_BGR2RGB))
            boxes = dt_boxes
            txts = [rec_res[i][0] for i in range(len(rec_res))]
            scores = [rec_res[i][1] for i in range(len(rec_res))]

142 143
            draw_img = draw_ocr(
                image, boxes, txts, scores, draw_txt=True, drop_score=0.5)
144
            draw_img_save = "./inference_results/"
L
LDOUBLEV 已提交
145 146 147 148
            if not os.path.exists(draw_img_save):
                os.makedirs(draw_img_save)
            cv2.imwrite(
                os.path.join(draw_img_save, os.path.basename(image_file)),
D
dyning 已提交
149
                draw_img[:, :, ::-1])
150 151
            print("The visualized image saved in {}".format(
                os.path.join(draw_img_save, os.path.basename(image_file))))
152 153 154 155


if __name__ == "__main__":
    main(utility.parse_args())