python EasyOCR函式庫如何使用

說明

1、EasyOCR是一個用python寫的OCR三方函式庫。可以在python中調用，用來識別圖像中的文字，並輸出為文字。

2、支援80多種語言的識別，辨識精確度高，甚至超過PaddleOCR。

安裝指令

pip install easyocr

程式碼實作

import easyocr
 
#设置识别中英文两种语言
reader = easyocr.Reader(["ch_sim","en"], gpu = False) # need to run only once to load model into memory
result = reader.readtext(r"d:Desktop4A34A16F-6B12-4ffc-88C6-FC86E4DF6912.png", detail = 0)
print(result)

實例擴充功能：

圖文擷取的程式碼

from pathlib import Path
import easyocr


file_url = r"识别图片.jpg"    # 需识别的图片
split_symbol = " "          # 默认空格为分隔符
row_space = 15              # 默认字符高度为15px，当识别出来的字符间距超过这个数值时会换行。


def make_reader():
    # 将模型加载到内存中。模型文件地址 C:Users用户.EasyOCRmodel
    reader = easyocr.Reader(["ch_sim", "en"])
    return reader


def change_to_character(file_url, reader, split_symbol=" ", row_space=15, save_dir="."):
    with open(file_url, "rb") as img:
        img_b = img.read()
    result = reader.readtext(img_b)

    result.sort(key=lambda x: x[0][0][1])  # 按竖直方向，进行排序==>进行分行处理。
    # for i in result:
    #     print(i)
    # print("="*100)

    # 按行进行分组
    content = []
    item = [result[0]]  # 首先放入第一个元素
    for i in result[1:]:
        if row_space >= i[0][0][1] - item[-1][0][0][1] >= 0:
            item.append(i)
        else:
            content.append(item)
            item = [i]
    content.append(item)

    filemane = Path(file_url).name.split(".")[0]
    with open(f"{save_dir}/{filemane}.txt", "w", encoding="utf8") as t:
        for i in content:                     # i 为每一行的内容
            i.sort(key=lambda x: x[0][0][0])  # 对每行的内容进行先后排序
            for r in i:
                # print(r)
                t.write(r[1] + split_symbol)
            t.write("
")
    return content


if __name__ == "__main__":
    change_to_character(file_url,  make_reader())

UI 介面的程式碼

import tkinter as tk
from tkinter import filedialog
from PIL import Image, ImageTk
from pathlib import Path
from character import change_to_character, make_reader
from threading import Thread
import time

# class Showing(tk.Frame):
#     def __init__(self, master=None):
#         super().__init__(master)
#         self.master = master
#         self.pack()
#         # self.img = tk.PhotoImage(file=r"C:UsersyanhyDesktop捕获22.PNG")
#         self.create_widgets()
#
#     def create_widgets(self):
#         self.img = tk.PhotoImage(file=r"C:UsersyanhyDesktop捕获22.PNG")
#         self.img_wig = tk.Label(self, image=self.img)
#         self.img_wig.pack()


# 最外层窗口设置
root = tk.Tk()
root.title("图片文字识别程序                    联系：410889472@qq.com")
window_x = root.winfo_screenwidth()
window_y = root.winfo_screenheight()
WIDTH = 1200
HEIGHT = 750
x = (window_x - WIDTH) / 2  # 水平居中
y = (window_y - HEIGHT) / 3  # 垂直偏上
root.geometry(f"{WIDTH}x{HEIGHT}+{int(x)}+{int(y)}")
root.resizable(width=False, height=False)

# 》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》
Row_space = 15
File_url_list = []
Img_type = [".jpg", ".jpeg", ".png", ".gif"]
Split_symbol = " "                               # 间隔符。
Save_dir = Path.cwd().joinpath("img_to_word")
if Save_dir.is_dir():
    pass
else:
    Path.mkdir(Save_dir)

# 》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》

def test():
    print(f"{Row_space=}")


def choose_file():       # 获取导入的图片路径地址
    global show_img, img_label, text, File_url_list
    filenames = filedialog.askopenfilenames()
    if len(filenames) == 1 and len(File_url_list) == 0:       # 单张图片导入，显示图片
        if Path(filenames[0]).suffix.lower() in Img_type:     # 判断是否图片类型
            File_url_list = list(filenames)
            try:
                if text.winfo_exists():
                    text.destroy()
            except NameError as e:
                print(f"choose_file提示：张图片导入错误>>> {e}")
            try:
                if img_label.winfo_exists():
                    img_label.destroy()
            except NameError as e:
                print(f"choose_file提示：单张图片导入错误>>> {e}")
            img = Image.open(File_url_list[0]).resize((560, 660))
            # print(img.size)
            show_img = ImageTk.PhotoImage(image=img)
            img_label = tk.Label(f_left, image=show_img)
            img_label.pack()
        else:
            print("导入的是非图像格式")
    else:                                     # 多张图片导入，显示列表。
        try:
            if img_label.winfo_exists():
                img_label.destroy()
        except NameError as e:
            print(f"提示：多张图片导入错误>>> {e}")
        try:
            if text.winfo_exists():
                text.destroy()
        except NameError as e:
            print(f"提示：多张图片导入错误>>> {e}")
        text = tk.Text(f_left, spacing1=5, spacing3=5)
        text.pack(fill="both", expand=True)


        for i in filenames:
            if Path(i).suffix.lower() in Img_type:
                File_url_list.append(i)
            else:
                pass
        File_url_list = set(File_url_list)
        for i in list(File_url_list):       # 把文件写入到文本框中
            text.insert("end", str(list(File_url_list).index(i)+1) + ": " + i + "
")
        File_url_list = list(File_url_list)
    print(f"{File_url_list=}")


def choose_dir():
    global show_img, img_label, text, File_url_list
    directoryname = filedialog.askdirectory()
    print(f"{directoryname=}")
    try:
        if img_label.winfo_exists():
            img_label.destroy()
    except NameError as e:
        print(f"choose_dir提示：多张图片导入错误>>> {e}")
    try:
        if text.winfo_exists():
            text.destroy()
    except NameError as e:
        print(f"choose_dir提示：多张图片导入错误>>> {e}")
    text = tk.Text(f_left, spacing1=5, spacing3=5)
    text.pack(fill="both", expand=True)

    for i in Path(directoryname).iterdir():       # 获取文件夹下的所有文件。
        if Path(i).suffix.lower() in Img_type:
            File_url_list.append(i.as_posix())    # as_posix() 把Path型转为字符串。
        else:
            pass
    File_url_list = set(File_url_list)
    for i in list(File_url_list):  # 把文件写入到文本框中
        text.insert("end", str(list(File_url_list).index(i) + 1) + ": " + i + "
")
    File_url_list = list(File_url_list)
    print(f"{File_url_list=}")


def clear_file_list():
    global File_url_list
    File_url_list.clear()
    try:
        if img_label.winfo_exists():
            img_label.destroy()
    except NameError as e:
        print(f"clear_file_list提示：清空错误>>> {e}")
    try:
        if text.winfo_exists():
            text.destroy()
    except NameError as e:
        print(f"clear_file_list提示：清空错误错误>>> {e}")


def get_entry1():       # 设置换行间距变量值
    global Row_space
    num = entry1.get()
    if num.isdigit():
        if int(num) > 0:
            Row_space = int(num)
    else:
        entry1.delete(0, "end")
        entry1.insert(0, 15)
        Row_space = 15


def set_split_symbol():
    global Split_symbol
    Split_symbol = entry2.get()
    print(f"{Split_symbol=}")


def do_change():
    if File_url_list:
        v.set("文字提取中,请稍后……")
        button_do.config(state="disable")        # 使按钮不可用。
        # ========================================
        def main():
            reader = make_reader()
            for i in File_url_list:
                content = change_to_character(i, reader, row_space=Row_space, split_symbol=Split_symbol, save_dir=Save_dir)
                read_text.delete(1.0, "end")
                for c in content:  # i 为每一行的内容
                    c.sort(key=lambda x: x[0][0][0])  # 对每行的内容进行先后排序
                    for r in c:
                        # print(r)
                        read_text.insert("end", r[1] + Split_symbol)
                    read_text.insert("end", "
")
            v.set("文字提取结束。")
            button_do.config(state="normal")     # 恢复按钮可用。
        # ========================================
        t = Thread(target=main, daemon=True)
        t.start()

    else:
        v.set("请先选择图片！")


def join_file():
    v.set("文件开始合并。")
    filst = list(Path(Save_dir).iterdir())      # 获取文件夹中所有的文本文件。
    with open(f"{Save_dir}/合并文件.txt", "w", encoding="utf8") as join_f:
        for f in filst:
            with open(f, "r", encoding="utf8") as r_f:
                read_con = r_f.read()
            join_f.write(f.name+"
"+read_con + "

")
    time.sleep(1)
    v.set("文件合并完毕。")


# 》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》
f_top = tk.Frame(root, height=65, width=1100, bd=1, relief="flat")  # "sunken" "raised"，"groove" 或 "ridge"
f_top.pack_propagate(False)  # 如果不加这个参数，当Frame框架中加入部件时，会自动变成底层窗口，自身的特性会消失。
f_top.pack(side="top", pady=5)

f_left = tk.Frame(root, height=660, width=560, bd=1, relief="groove")
f_left.pack_propagate(False)
f_left.pack(side="left", padx=20)

f_right = tk.Frame(root, height=660, width=560, bd=1, relief="groove")
f_right.pack_propagate(False)
f_right.pack(side="left", padx=20)

read_text = tk.Text(f_right, spacing1=5, spacing3=5)
read_text.pack(fill="both", expand=True)


# 》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》
button_choose_file = tk.Button(f_top, text="选择图片", command=choose_file)
button_choose_file.pack(side="left", padx=10, ipadx=5)

button_choose_file = tk.Button(f_top, text="选择文件夹", command=choose_dir)
button_choose_file.pack(side="left", padx=10, ipadx=5)

button_clear_file = tk.Button(f_top, text="清空选择", bg="#FFEF2F", command=clear_file_list)
button_clear_file.pack(side="left", padx=5, ipadx=5)

# 》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》
f_row_content = tk.Frame(f_top, height=50, width=300, bg="#D1D4D0", relief="flat")  # "sunken" "raised"，"groove" 或 "ridge"
f_row_content.pack_propagate(False)
f_row_content.pack(side="left", padx=15)

button_set_row_height = tk.Button(f_row_content, text="设置行间距", command=get_entry1)
button_set_row_height.pack(side="left", ipadx=3, padx=3)

entry1 = tk.Entry(f_row_content, font=("", 18), width=3)
entry1.insert(0, 15)
entry1.pack(padx=5, side="left")

tk.Label(f_row_content, justify="left", text="填入像素值，设置换行间距。
默认15个像素。").pack(side="left")

# 》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》
f_split = tk.Frame(f_top, height=50, width=215, bg="#D1D4D0", relief="flat")  # "sunken" "raised"，"groove" 或 "ridge"
f_split.pack_propagate(False)
f_split.pack(side="left", padx=4)

button_split = tk.Button(f_split, text="设置分隔符", command=set_split_symbol)
button_split.pack(side="left", ipadx=3, padx=3)

entry2 = tk.Entry(f_split, font=("", 18), width=3)
entry2.insert(0, " ")
entry2.pack(padx=5, side="left")

tk.Label(f_split, justify="left", text="默认一个空格").pack(side="left")

# 《《《《《《《《《《《《《《《《《《《《《《  提取 合并文件  》》》》》》》》》》》》》》》》》》》》》》》》》
button_do = tk.Button(f_top, text="开始提取", bg="#4AB0FF", command=do_change)
button_do.pack(side="left", padx=10, ipadx=2)

button_join = tk.Button(f_top, text="合并文件", command=join_file)
button_join.pack(side="left", padx=5, ipadx=2)

v = tk.StringVar()
v.set("info……")
tk.Label(f_top, bg="#2EBD1D", justify="left", textvariable=v).pack(side="left")

# 《《《《《《《《《《《《《《《《《《《《《《  右键菜单  》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》
def copy_text():
    read_text.event_generate("<<Copy>>")

menubar = tk.Menu(tearoff=False)
# root["menu"] = menubar      # 没有把这个 菜单部件 加入到 root 窗口的菜单属性中，所以它不会在root窗口的顶部显示。
menubar.add_command(label="复制", command=copy_text)

def show_menu(event):
    """用 菜单部件 的 post 方法展示菜单"""
    menubar.post(event.x_root, event.y_root)

read_text.bind("<Button-3>", show_menu)
# 》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》

root.mainloop()

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