Patent Document ID: 8971587
Application ID: 14334558

Base Claim:
1. A method, comprising: capturing one or more of image data depicting a digital representation of a document and audio data relating to the digital representation of the document; defining a plurality of candidate edge points within the image data; removing one or more outlier candidate edge points from the plurality of candidate edge points; defining a second plurality of candidate edge points excluding the one or more outlier candidate edge points; and defining four sides of a tetragon based on one or more of the plurality of candidate edge points and the second plurality of candidate edge points, wherein each side of the tetragon corresponds to a different side of the document, and wherein the tetragon bounds the digital representation of the document.

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Claim 16:
16. The method as recited in claim 1 , further comprising: determining whether the tetragon satisfies one or more quality control metrics; and rejecting the tetragon upon determining the tetragon does not satisfy one or more of the quality control metrics, wherein the quality control metrics comprise one or more of: a Least Mean Squares (LMS) support metric, a minimum tetragon area metric, a tetragon corner location metric; and a tetragon diagonal intersection location metric.