Redact or Black out Text in Image within PDF using C#

RedactTextInImage.java

// Redact Text in PDF and Text in Image like scanned document using Java
RedactorSettings settings = new RedactorSettings(new AsposeCloudOcrConnector());
try (Redactor redactor = new Redactor("path/document.pdf", new LoadOptions(), settings))
{
    ReplacementOptions marker = new ReplacementOptions(java.awt.Color.BLACK);
    Redaction redactions[] = new Redaction[] {
            new RegexRedaction("(?<=Dear\\s)([^,]+)", marker), // cardholder name
            new RegexRedaction("\\d{2}/\\d{2}", marker), // valid thru
            new RegexRedaction("\\d{4}", marker)  // card number parts
        };
    RedactorChangeLog result = redactor.apply(redactions);
    if (result.getStatus() != RedactionStatus.Failed)
    {
        redactor.save(new SaveOptions(false, "redacted"));
    }
}