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US 8,787,702 B1Granted
Methods and apparatus for determining and/or modifying image orientation
AssigneeAccusoft Corporation
InventorWilliam Douglas Withers
Life of this patent
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AssigneeAccusoft Corporation
InventorWilliam Douglas Withers
Estimating the term…
Methods and apparatus for processing one or more images, e.g., images representing pages including text, to detect and in some instances correct the orientation of the page. In some embodiments the methods and apparatus for processing image data comprise generating a histogram of foreground pixel counts corresponding to a current line of text of the image being processed with the foreground pixel counts corresponding to different rows of pixels corresponding to the current line of text and identifying based on statistical analysis of the generated histogram whether the current page of text is oriented in an inverted or non-inverted position. In some embodiments analysis is performed on multiple lines of text with cumulative statistics being used in to determine the orientation of the page. In some embodiments, a page whose orientation is determined to be upside down is re-oriented to be right-side up.
A method of processing a page in the form of an image, said page including lines of text, the method comprising:
An apparatus for processing a page in the form of an image, the apparatus comprising:
A non-transitory computer readable medium comprising computer executable instructions for controlling a computer to process a page in the form of an image, said page including lines of text, the computer readable medium including:
Dependencies are inferred from the claim text.