Clipped Text Detection
TopOCR Reader's Automatic Column Straightening function will also activate a function called "Clipped Text Detection" to alert you to the possibility that your document has been placed too close to the edge of the camera's capture area.
If this occurs, then it raises the possibility that part of the document is completely out of the camera capture range.
In addition to the Clipped Text alert, the Column Straightening function will actually remove the clipped column from the image.
It does this because generally clipped text columns happen when you are scanning both pages of an open book or magazine and a portion of one of pages is outside the camera's capture area.
By removing the clipped page, you preserve the integrity and OCR accuracy of the page that's not clipped.
Column Straightening and Clipped Text Detection will work best when your document is placed on a clean, white background that does not have any extraneous objects like pencils or coffee cups in the image capture area.
These objects, as well as a dark background makes it harder for Column Straightening and Clipped Text Detection to function effectively.
If TopOCR Reader does detect that the text is too close to a particular edge, it will use its Text To Speech system to notify you.
For example, after you start scanning an image, it might say, "left side of document may be clipped". In that case, you would move your document a little to the right and try scanning again.
TopOCR Reader will check for clipping on all four sides of the document, and will also inform you if multiple sides are clipped.