Negative documents are documents that have a reverse color photometry: text is white, and the background is black. Since the OCR document recognition assumes the opposite, this filter automatically detects and inverts color photometry in a image.

public bool AutoInvert { get; set; }

Public Property AutoInvert As Boolean
	Get
	Set

public:
property bool AutoInvert {
	bool get ();
	void set (bool value);
}