public boolean isEnableImagePreprocessing() {
        return enableImagePreprocessing;
    }
@return image processing is enabled or not
@see #setEnableImagePreprocessing(boolean)
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-ocr-module/src/main/java/org/apache/tika/parser/ocr/TesseractOCRConfig.java