CPC G06V 30/19093 (2022.01) [G06V 30/12 (2022.01); G06V 30/164 (2022.01); H04N 1/448 (2013.01)] | 17 Claims |
1. A method comprising:
recognizing a text string from a signal;
detecting, from the text string, a substring of a sensitive-text type based on a similarity between the substring and a regular expression, the regular expression defining a pattern for searching a text string and finding substrings matching the pattern; and
modifying the signal by removing information related to the detected substring from the signal;
wherein said detecting the substring comprises:
detecting, from the text string, the substring if an edit distance between the substring and the regular expression is smaller than a predefined threshold.
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