L_OcrPage_GetRotateAngle

#include "ltocr.h"

L_LTOCR_API L_INT EXT_FUNCTION L_OcrPage_GetRotateAngle(page, value, confidence)

Gets the angle of the rotation of this L_OcrPage in degrees.

Parameters

L_OcrPage page

Handle to the OCR page.

L_INT* value

Address to L_INT variable to be updated with the page rotation angle.

L_INT* confidence

Address to L_INT variable to be updated with the rotation angle detection confidence.

Returns

Comments

Gets the angle of the rotation of this L_OcrPage in degrees. A positive value indicates a counter-clockwise rotation.

This method will return one of the following values:

Use L_OcrPage_AutoPreprocess with L_OcrAutoPreprocessPageCommands_Rotate to automatically rotate the page bitmap prior to calling L_OcrPage_Recognize. This could enhance the quality of the image before starting its recognition.

If the bitmap is rotated, L_OcrPage_GetRotateAngle will return the angle required to fix the orientation of the page, if you call L_OcrPage_AutoPreprocess on the page, all subsequent calls to L_OcrPage_GetRotateAngle will return 0 since the bitmap is not rotated. Hence, you must use L_OcrPage_GetRotateAngle before calling L_OcrPage_AutoPreprocess.

Use L_OcrPage_GetAutoPreprocessValues to obtain the accumulative pre-processing values applied to this L_OcrPage.

Required DLLs and Libraries

• LTOCR
• For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.