Disappear characters in replacement word #3667
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Hello, When I made annotation it looks good: When I applied redaction it's not good: I tried to replace the Graham Road only and it works well as appear here: I can't understand the problem is in OCRed PDF? or in insert_text! I had this issue in another PDF but it solved by fitz.TOOLS.set_small_glyph_heights(True), in this PDF nothing change, can you recommend something to solve? |
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Replies: 1 comment
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The problem is that the redaction algorithm does not (and must not!) care about small glyph heights setting. It must in contrast make sure (for legal reasons) that not a single bit remains that might carry information to be removed. To solve your issue, you can always further decrease the height of your redaction rectangle. For example make a small horizontal rectangular stripe around the middle line. As long as all desired characters overlap that stripe in any way, they will be removed. |
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The problem is that the redaction algorithm does not (and must not!) care about small glyph heights setting. It must in contrast make sure (for legal reasons) that not a single bit remains that might carry information to be removed.
To solve your issue, you can always further decrease the height of your redaction rectangle. For example make a small horizontal rectangular stripe around the middle line. As long as all desired characters overlap that stripe in any way, they will be removed.