## filters {#filters}

Allows to prepare the image for OCR by adjusting pre-processing methods. Allows to set 12 filters. Example to set: RecognitionSettings settings; settings.filters.filter_1 = OCR_IMG_PREPROCESS_GRAYSCALE; settings.filters.filter_2 = OCR_IMG_PREPROCESS_SCALE(2); settings.filters.filter_3 = OCR_IMG_PREPROCESS_THRESHOLD(200);.

**Returns:** custom_preprocessing_filters

```cpp
filters()
```