PreprocessImage
PreprocessImage(string, PreprocessingFilter)
Use image preprocessing to improve the accuracy of OCR. Create a list of filters that will be applied to the input image in the order you specify. example to create filters: PreprocessingFilter filters = new PreprocessingFilter { PreprocessingFilter.Invert(), PreprocessingFilter.Threshold(150), PreprocessingFilter.Binarize(), PreprocessingFilter.Rotate(180), PreprocessingFilter.Resize(3000,3000, Aspose.OCR.Filters.InterpolationFilterType.Box), PreprocessingFilter.Scale(6f), PreprocessingFilter.Dilate() }; You don’t need all of them. Set only what you need.
public MemoryStream PreprocessImage(string fullPath, PreprocessingFilter filters)
| Parameter | Type | Description |
|---|---|---|
| fullPath | String | Full path to the image. |
| filters | PreprocessingFilter | Image optimization filtersPreprocessingFilter. |
Return Value
Stream with modified image so you can save or recognize it.
See Also
- class PreprocessingFilter
- class AsposeOcr
- namespace Aspose.OCR
- assembly Aspose.OCR
PreprocessImage(MemoryStream, PreprocessingFilter)
Use image preprocessing to improve the accuracy of OCR. Create a list of filters that will be applied to the input image in the order you specify. example to create filters: PreprocessingFilter filters = new PreprocessingFilter { PreprocessingFilter.Invert(), PreprocessingFilter.Threshold(150), PreprocessingFilter.Binarize(), PreprocessingFilter.Rotate(180), PreprocessingFilter.Resize(3000,3000, Aspose.OCR.Filters.InterpolationFilterType.Box), PreprocessingFilter.Scale(6f), PreprocessingFilter.Dilate() }; You don’t need all of them. Set only what you need.
public MemoryStream PreprocessImage(MemoryStream stream, PreprocessingFilter filters)
| Parameter | Type | Description |
|---|---|---|
| stream | MemoryStream | Memory stream containing the image. |
| filters | PreprocessingFilter | Image optimization filtersPreprocessingFilter. |
Return Value
Stream with modified image so you can save or recognize it.
See Also
- class PreprocessingFilter
- class AsposeOcr
- namespace Aspose.OCR
- assembly Aspose.OCR
