问题陈述
- 阅读pdf并搜索单词。
- 如果找到单词，请注释该单词并在 pdf 文件中的注释文本周围裁剪区域。
- 每个裁剪的图像应该只有一个注释。
库和版本
- python-3.6
- 菲茨-0.0.1.dev2
- pymupdf-1.17.5
面临的问题
对于前两次迭代，注释是完美的，并且裁剪也可以按预期完美地工作。但是通过从文本实例中迭代搜索词的下一次出现，然后在该区域周围裁剪，并且搜索词的注释失败。找不到此问题的解决方案。
def cropPdf( pdfName,word):
c=0
# opening the pdf file using fitz
fitz_doc=fitz.open(pdfName)
# getting first page of the doc
fitz_page=fitz_doc[0]
# finding all instances where the searchword is found
text_instances=fitz_page.searchFor(word)
# Iterating through each text instances
for text_cord in text_instances:
c=c+1
pdfPath = "./" + pdfName + ".pdf"
# To add highlight(Rectangle Annotation) around the search word
highlight = fitz_page.addRectAnnot(text_cord)
# getting the bounding box cordinate
x0,y0,x1,y1=highlight.rect
# here i set the cropping area around the annotated text
fitz_page.setCropBox(fitz.Rect(x0+600,y0+600,x0-600,y0-600))
#
pix=fitz_page.getPixmap()
print(fitz_page.number)
base_name_highlight="output"+str(c)+".png"
# saving the cropped area as png file
pix.writeImage("./highlight_folder/"+base_name_highlight)
# Deleting the marked annotation which helps me to avoid duplicate annotation inside a cropped area,
# when starting to annotate the next occurence of the word to annotate while iterating.
fitz_page.deleteAnnot(highlight)
cropPdf(pdfName="A4_4.pdf",word="INSULATION")
结果图像
所有裁剪图像的预期输出
裁剪时的假大小写
