我有一个 pdf，我想使用 Python 从中提取一些图像。我可以使用 poppler-utils 库中的 pdfimages 从 Linux 命令行轻松提取图像 like this :

pdfimages my_file.pdf /tmp/image

接下来我为它找到了一个 Python 绑定(bind) here ，并使用通常的 sudo apt-get install python-poppler 安装它。在 python 解释器中，我现在可以这样做:

>>> import poppler
>>> dir(poppler)
['ACTION_GOTO_DEST', 'ACTION_GOTO_REMOTE', 'ACTION_JAVASCRIPT', 'ACTION_LAUNCH', 'ACTION_MOVIE', 'ACTION_NAMED', 'ACTION_NONE', 'ACTION_OCG_STATE', 'ACTION_RENDITION', 'ACTION_UNKNOWN', 'ACTION_URI', 'ANNOT_3D', 'ANNOT_CARET', 'ANNOT_CIRCLE', 'ANNOT_EXTERNAL_DATA_MARKUP_3D', 'ANNOT_EXTERNAL_DATA_MARKUP_UNKNOWN', 'ANNOT_FILE_ATTACHMENT', 'ANNOT_FLAG_HIDDEN', 'ANNOT_FLAG_INVISIBLE', 'ANNOT_FLAG_LOCKED', 'ANNOT_FLAG_LOCKED_CONTENTS', 'ANNOT_FLAG_NO_ROTATE', 'ANNOT_FLAG_NO_VIEW', 'ANNOT_FLAG_NO_ZOOM', 'ANNOT_FLAG_PRINT', 'ANNOT_FLAG_READ_ONLY', 'ANNOT_FLAG_TOGGLE_NO_VIEW', 'ANNOT_FLAG_UNKNOWN', 'ANNOT_FREE_TEXT', 'ANNOT_FREE_TEXT_QUADDING_CENTERED', 'ANNOT_FREE_TEXT_QUADDING_LEFT_JUSTIFIED', 'ANNOT_FREE_TEXT_QUADDING_RIGHT_JUSTIFIED', 'ANNOT_HIGHLIGHT', 'ANNOT_INK', 'ANNOT_LINE', 'ANNOT_LINK', 'ANNOT_MARKUP_REPLY_TYPE_GROUP', 'ANNOT_MARKUP_REPLY_TYPE_R', 'ANNOT_MOVIE', 'ANNOT_POLYGON', 'ANNOT_POLY_LINE', 'ANNOT_POPUP', 'ANNOT_PRINTER_MARK', 'ANNOT_SCREEN', 'ANNOT_SOUND', 'ANNOT_SQUARE', 'ANNOT_SQUIGGLY', 'ANNOT_STAMP', 'ANNOT_STRIKE_OUT', 'ANNOT_TEXT', 'ANNOT_TEXT_STATE_ACCEPTED', 'ANNOT_TEXT_STATE_CANCELLED', 'ANNOT_TEXT_STATE_COMPLETED', 'ANNOT_TEXT_STATE_MARKED', 'ANNOT_TEXT_STATE_NONE', 'ANNOT_TEXT_STATE_REJECTED', 'ANNOT_TEXT_STATE_UNKNOWN', 'ANNOT_TEXT_STATE_UNMARKED', 'ANNOT_TRAP_NET', 'ANNOT_UNDERLINE', 'ANNOT_UNKNOWN', 'ANNOT_WATERMARK', 'ANNOT_WIDGET', 'Action', 'ActionAny', 'ActionGotoDest', 'ActionGotoRemote', 'ActionLaunch', 'ActionMovie', 'ActionNamed', 'ActionType', 'ActionUri', 'Annot', 'AnnotCalloutLine', 'AnnotExternalDataType', 'AnnotFlag', 'AnnotFreeText', 'AnnotFreeTextQuadding', 'AnnotMapping', 'AnnotMarkup', 'AnnotMarkupReplyType', 'AnnotText', 'AnnotTextState', 'AnnotType', 'Attachment', 'BACKEND_CAIRO', 'BACKEND_SPLASH', 'BACKEND_UNKNOWN', 'Backend', 'Color', 'DEST_FIT', 'DEST_FITB', 'DEST_FITBH', 'DEST_FITBV', 'DEST_FITH', 'DEST_FITR', 'DEST_FITV', 'DEST_NAMED', 'DEST_UNKNOWN', 'DEST_XYZ', 'Dest', 'DestType', 'Document', 'ERROR_BAD_CATALOG', 'ERROR_DAMAGED', 'ERROR_ENCRYPTED', 'ERROR_INVALID', 'ERROR_OPEN_FILE', 'Error', 'FONT_TYPE_CID_TYPE0', 'FONT_TYPE_CID_TYPE0C', 'FONT_TYPE_CID_TYPE0COT', 'FONT_TYPE_CID_TYPE2', 'FONT_TYPE_CID_TYPE2OT', 'FONT_TYPE_TRUETYPE', 'FONT_TYPE_TRUETYPEOT', 'FONT_TYPE_TYPE1', 'FONT_TYPE_TYPE1C', 'FONT_TYPE_TYPE1COT', 'FONT_TYPE_TYPE3', 'FONT_TYPE_UNKNOWN', 'FORM_BUTTON_CHECK', 'FORM_BUTTON_PUSH', 'FORM_BUTTON_RADIO', 'FORM_CHOICE_COMBO', 'FORM_CHOICE_LIST', 'FORM_FIELD_BUTTON', 'FORM_FIELD_CHOICE', 'FORM_FIELD_SIGNATURE', 'FORM_FIELD_TEXT', 'FORM_FIELD_UNKNOWN', 'FORM_TEXT_FILE_SELECT', 'FORM_TEXT_MULTILINE', 'FORM_TEXT_NORMAL', 'FontInfo', 'FontType', 'FontsIter', 'FormButtonType', 'FormChoiceType', 'FormField', 'FormFieldMapping', 'FormFieldType', 'FormTextType', 'ImageMapping', 'IndexIter', 'Layer', 'LayersIter', 'LinkMapping', 'ORIENTATION_LANDSCAPE', 'ORIENTATION_PORTRAIT', 'ORIENTATION_SEASCAPE', 'ORIENTATION_UPSIDEDOWN', 'Orientation', 'PAGE_LAYOUT_ONE_COLUMN', 'PAGE_LAYOUT_SINGLE_PAGE', 'PAGE_LAYOUT_TWO_COLUMN_LEFT', 'PAGE_LAYOUT_TWO_COLUMN_RIGHT', 'PAGE_LAYOUT_TWO_PAGE_LEFT', 'PAGE_LAYOUT_TWO_PAGE_RIGHT', 'PAGE_LAYOUT_UNSET', 'PAGE_MODE_FULL_SCREEN', 'PAGE_MODE_NONE', 'PAGE_MODE_UNSET', 'PAGE_MODE_USE_ATTACHMENTS', 'PAGE_MODE_USE_OC', 'PAGE_MODE_USE_OUTLINES', 'PAGE_MODE_USE_THUMBS', 'PAGE_TRANSITION_BLINDS', 'PAGE_TRANSITION_BOX', 'PAGE_TRANSITION_COVER', 'PAGE_TRANSITION_DISSOLVE', 'PAGE_TRANSITION_FADE', 'PAGE_TRANSITION_FLY', 'PAGE_TRANSITION_GLITTER', 'PAGE_TRANSITION_HORIZONTAL', 'PAGE_TRANSITION_INWARD', 'PAGE_TRANSITION_OUTWARD', 'PAGE_TRANSITION_PUSH', 'PAGE_TRANSITION_REPLACE', 'PAGE_TRANSITION_SPLIT', 'PAGE_TRANSITION_UNCOVER', 'PAGE_TRANSITION_VERTICAL', 'PAGE_TRANSITION_WIPE', 'PERMISSIONS_FULL', 'PERMISSIONS_OK_TO_ADD_NOTES', 'PERMISSIONS_OK_TO_ASSEMBLE', 'PERMISSIONS_OK_TO_COPY', 'PERMISSIONS_OK_TO_EXTRACT_CONTENTS', 'PERMISSIONS_OK_TO_FILL_FORM', 'PERMISSIONS_OK_TO_MODIFY', 'PERMISSIONS_OK_TO_PRINT', 'PERMISSIONS_OK_TO_PRINT_HIGH_RESOLUTION', 'PSFile', 'Page', 'PageLayout', 'PageMode', 'PageTransition', 'PageTransitionAlignment', 'PageTransitionDirection', 'PageTransitionType', 'Permissions', 'Rectangle', 'SELECTION_GLYPH', 'SELECTION_LINE', 'SELECTION_WORD', 'SelectionStyle', 'VIEWER_PREFERENCES_CENTER_WINDOW', 'VIEWER_PREFERENCES_DIRECTION_RTL', 'VIEWER_PREFERENCES_DISPLAY_DOC_TITLE', 'VIEWER_PREFERENCES_FIT_WINDOW', 'VIEWER_PREFERENCES_HIDE_MENUBAR', 'VIEWER_PREFERENCES_HIDE_TOOLBAR', 'VIEWER_PREFERENCES_HIDE_WINDOWUI', 'VIEWER_PREFERENCES_UNSET', 'ViewerPreferences', '__doc__', '__file__', '__name__', '__package__', '__version__', 'document_new_from_data', 'document_new_from_file', 'get_backend', 'get_version', 'pypoppler_version']
>>> 

从这里我有点迷路了。在此列表中，我找不到任何类似于 pdfimages 名称或任何相关内容的内容。在 the source files of python-poppler我什至找不到 .py 文件。

有人知道如何在 Python 中使用 poppler pdfimages 工具吗？欢迎所有提示!

最佳答案

探索 ImageMapping，您会在那里找到您要找的东西。 ImageMapping 对象包含图像检索所需的图像标识符(整数)以及纸张坐标中的图像区域。
这是从 poppler 的 glib 后端借来的东西。我已经测试了C 版本(poppler-glib) 版本的ImageMapping，它工作正常。
请注意，依赖于 C++/Qt 的 poppler 绑定(bind)缺少此功能。

关于python - 如何使用 Python 中的 poppler 库从 pdf 中提取图像？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/26508993/