To recognize pages that contain text with different orientations (like on image below), you can explicitly specify the text orientation and its coordinates.

To implement this:

1. Create text blocks for the text in the image.
2. Specify the text orientation using TextOrientation object.
3. Call the Recognize method of the FRDocument object.

C# sample:

//add your image to the FRDocument
string imagePath = @"D:\SampleImages\orientations.png";
document.AddImageFile(imagePath, null, null);

//create regions that correspond to the text
FREngine.Region verticalRegion = engineLoader.Engine.CreateRegion();
verticalRegion.AddRect(88,110,128,245); //specify vertical text coordinates
FREngine.Region horizontalRegion = engineLoader.Engine.CreateRegion();
horizontalRegion.AddRect(90,354,252,390); //specify horizontal text coordinates

//add text blocks to document layout
document.Pages[0].Layout.AddBlock(FREngine.BlockTypeEnum.BT_Text, horizontalRegion);
document.Pages[0].Layout.AddBlock(FREngine.BlockTypeEnum.BT_Text, verticalRegion);

//specify orientation for vertical text
FREngine.TextOrientation textOrientation = engineLoader.Engine.CreateTextOrientation();
textOrientation.RotationType = FREngine.RotationTypeEnum.RT_Counterclockwise;
document.Pages[0].Layout.Blocks[1].GetAsTextBlock().TextOrientation = textOrientation;

//recognize, synthesize, export
document.Recognize();
document.Synthesize();
document.Export(@"D:\Results\exp.rtf", FREngine.FileExportFormatEnum.FEF_RTF, null);

To run this sample, you can insert the code above into the try block of the processImage method in C# Hello sample and specify the path to the attached image.