ImageEn, unit imageenproc

TImageEnProc.CalcOrientation

TImageEnProc.CalcOrientation


Declaration

function CalcOrientation(): Integer;


Description

Find the correct orientation for a textual image. It is mainly used to detect whether to adjust a document from portrait to landscape.

Notes:
- Apply only to document images (images with text)
- CalcOrientation can only detect 0 or 90 orientation. It cannot detect upside down, inverted text.


Demo

Demo  Demos\ImageEditing\EveryMethod\EveryMethod.dpr


Example

// Load test image
ImageEnView1.IO.LoadFromFile( 'D:\TestImage.jpg' );



// Automatically rotate a document
n := ImageEnView1.Proc.CalcOrientation();
ImageEnView1.Proc.Rotate( n );




See Also

- SkewDetectionFine
- SkewDetection