Delete unused files

ppocr/utils/character.py

-# 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.
-
-import numpy as np
-import string
-import re
-from .check import check_config_params
-import sys
-
-
-class CharacterOps(object):
-    """ Convert between text-label and text-index """
-
-    def __init__(self, config):
-        self.character_type = config['character_type']
-        self.loss_type = config['loss_type']
-        self.max_text_len = config['max_text_length']
-        if self.character_type == "en":
-            self.character_str = "0123456789abcdefghijklmnopqrstuvwxyz"
-            dict_character = list(self.character_str)
-        elif self.character_type == "ch":
-            character_dict_path = config['character_dict_path']
-            add_space = False
-            if 'use_space_char' in config:
-                add_space = config['use_space_char']
-            self.character_str = ""
-            with open(character_dict_path, "rb") as fin:
-                lines = fin.readlines()
-                for line in lines:
-                    line = line.decode('utf-8').strip("\n").strip("\r\n")
-                    self.character_str += line
-            if add_space:
-                self.character_str += " "
-            dict_character = list(self.character_str)
-        elif self.character_type == "en_sensitive":
-            # same with ASTER setting (use 94 char).
-            self.character_str = string.printable[:-6]
-            dict_character = list(self.character_str)
-        else:
-            self.character_str = None
-        assert self.character_str is not None, \
-            "Nonsupport type of the character: {}".format(self.character_str)
-        self.beg_str = "sos"
-        self.end_str = "eos"
-        if self.loss_type == "attention":
-            dict_character = [self.beg_str, self.end_str] + dict_character
-        elif self.loss_type == "srn":
-            dict_character = dict_character + [self.beg_str, self.end_str]
-        self.dict = {}
-        for i, char in enumerate(dict_character):
-            self.dict[char] = i
-        self.character = dict_character
-
-    def encode(self, text):
-        """convert text-label into text-index.
-        input:
-            text: text labels of each image. [batch_size]
-
-        output:
-            text: concatenated text index for CTCLoss.
-                    [sum(text_lengths)] = [text_index_0 + text_index_1 + ... + text_index_(n - 1)]
-            length: length of each text. [batch_size]
-        """
-        if self.character_type == "en":
-            text = text.lower()
-
-        text_list = []
-        for char in text:
-            if char not in self.dict:
-                continue
-            text_list.append(self.dict[char])
-        text = np.array(text_list)
-        return text
-
-    def decode(self, text_index, is_remove_duplicate=False):
-        """ convert text-index into text-label. """
-        char_list = []
-        char_num = self.get_char_num()
-
-        if self.loss_type == "attention":
-            beg_idx = self.get_beg_end_flag_idx("beg")
-            end_idx = self.get_beg_end_flag_idx("end")
-            ignored_tokens = [beg_idx, end_idx]
-        else:
-            ignored_tokens = [char_num]
-
-        for idx in range(len(text_index)):
-            if text_index[idx] in ignored_tokens:
-                continue
-            if is_remove_duplicate:
-                if idx > 0 and text_index[idx - 1] == text_index[idx]:
-                    continue
-            char_list.append(self.character[int(text_index[idx])])
-        text = ''.join(char_list)
-        return text
-
-    def get_char_num(self):
-        return len(self.character)
-
-    def get_beg_end_flag_idx(self, beg_or_end):
-        if self.loss_type == "attention":
-            if beg_or_end == "beg":
-                idx = np.array(self.dict[self.beg_str])
-            elif beg_or_end == "end":
-                idx = np.array(self.dict[self.end_str])
-            else:
-                assert False, "Unsupport type %s in get_beg_end_flag_idx"\
-                    % beg_or_end
-            return idx
-        else:
-            err = "error in get_beg_end_flag_idx when using the loss %s"\
-                % (self.loss_type)
-            assert False, err
-
-
-def cal_predicts_accuracy(char_ops,
-                          preds,
-                          preds_lod,
-                          labels,
-                          labels_lod,
-                          is_remove_duplicate=False):
-    acc_num = 0
-    img_num = 0
-    for ino in range(len(labels_lod) - 1):
-        beg_no = preds_lod[ino]
-        end_no = preds_lod[ino + 1]
-        preds_text = preds[beg_no:end_no].reshape(-1)
-        preds_text = char_ops.decode(preds_text, is_remove_duplicate)
-
-        beg_no = labels_lod[ino]
-        end_no = labels_lod[ino + 1]
-        labels_text = labels[beg_no:end_no].reshape(-1)
-        labels_text = char_ops.decode(labels_text, is_remove_duplicate)
-        img_num += 1
-
-        if preds_text == labels_text:
-            acc_num += 1
-    acc = acc_num * 1.0 / img_num
-    return acc, acc_num, img_num
-
-
-def cal_predicts_accuracy_srn(char_ops,
-                              preds,
-                              labels,
-                              max_text_len,
-                              is_debug=False):
-    acc_num = 0
-    img_num = 0
-
-    char_num = char_ops.get_char_num()
-
-    total_len = preds.shape[0]
-    img_num = int(total_len / max_text_len)
-    for i in range(img_num):
-        cur_label = []
-        cur_pred = []
-        for j in range(max_text_len):
-            if labels[j + i * max_text_len] != int(char_num-1):  #0
-                cur_label.append(labels[j + i * max_text_len][0])
-            else:
-                break
-
-        for j in range(max_text_len + 1):
-            if j < len(cur_label) and preds[j + i * max_text_len][
-                    0] != cur_label[j]:
-                break
-            elif j == len(cur_label) and j == max_text_len:
-                acc_num += 1
-                break
-            elif j == len(cur_label) and preds[j + i * max_text_len][0] == int(char_num-1):
-                acc_num += 1
-                break
-    acc = acc_num * 1.0 / img_num
-    return acc, acc_num, img_num
-
-
-def convert_rec_attention_infer_res(preds):
-    img_num = preds.shape[0]
-    target_lod = [0]
-    convert_ids = []
-    for ino in range(img_num):
-        end_pos = np.where(preds[ino, :] == 1)[0]
-        if len(end_pos) <= 1:
-            text_list = preds[ino, 1:]
-        else:
-            text_list = preds[ino, 1:end_pos[1]]
-        target_lod.append(target_lod[ino] + len(text_list))
-        convert_ids = convert_ids + list(text_list)
-    convert_ids = np.array(convert_ids)
-    convert_ids = convert_ids.reshape((-1, 1))
-    return convert_ids, target_lod
-
-
-def convert_rec_label_to_lod(ori_labels):
-    img_num = len(ori_labels)
-    target_lod = [0]
-    convert_ids = []
-    for ino in range(img_num):
-        target_lod.append(target_lod[ino] + len(ori_labels[ino]))
-        convert_ids = convert_ids + list(ori_labels[ino])
-    convert_ids = np.array(convert_ids)
-    convert_ids = convert_ids.reshape((-1, 1))
-    return convert_ids, target_lod

ppocr/utils/check.py

-# 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.
-
-from __future__ import absolute_import
-from __future__ import division
-from __future__ import print_function
-from __future__ import unicode_literals
-
-import sys
-
-import logging
-logger = logging.getLogger(__name__)
-
-
-def check_config_params(config, config_name, params):
-    for param in params:
-        if param not in config:
-            err = "param %s didn't find in %s!" % (param, config_name)
-            assert False, err
-    return