add pdf_img

pdf/pdf_img.py

@@ -0,0 +1,54 @@
+#!/usr/bin/env python3
+
+import fitz  #pip install pymupdf
+import re
+import os
+
+
+def find_imag(path,img_path):
+
+    checkXO = r"/Type(?= */XObject)"
+    checkIM = r"/Subtype(?= */Image)"
+
+    pdf = fitz.open(path)
+
+    img_count = 0
+    len_XREF = pdf._getXrefLength()
+
+    print("文件名:{}, 页数: {}, 对象: {}".format(path, len(pdf), len_XREF - 1))
+
+    for i in range(1, len_XREF):
+        text = pdf._getXrefString(i)
+        isXObject = re.search(checkXO, text)
+
+        # 使用正则表达式查看是否是图片
+        isImage = re.search(checkIM, text)
+
+        # 如果不是对象也不是图片，则continue
+        if not isXObject or not isImage:
+            continue
+        img_count += 1
+        # 根据索引生成图像
+        pix = fitz.Pixmap(pdf, i)
+  
+        new_name = path.replace('\\', '_') + "_img{}.png".format(img_count)
+        new_name = new_name.replace(':', '')
+
+        # 如果pix.n<5,可以直接存为PNG
+        if pix.n < 5:
+            pix.writePNG(os.path.join(img_path, new_name))
+     
+        else:
+            pix0 = fitz.Pixmap(fitz.csRGB, pix)
+            pix0.writePNG(os.path.join(img_path, new_name))
+            pix0 = None
+       
+        pix = None
+     
+        print("提取了{}张图片".format(img_count))
+
+
+if __name__=='__main__':
+    pdf_path = r'test.pdf'
+    img_path = r'img'
+    m = find_imag(pdf_path, img_path)