public void setOcrDPI(int ocrDPI) {
        this.ocrDPI = ocrDPI;
        userConfigured.add("ocrDPI");
    }
Dots per inch used to render the page image for OCR.
This does not apply to all image formats.

@param ocrDPI
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-pdf-module/src/main/java/org/apache/tika/parser/pdf/PDFParserConfig.java