1. A method for providing video deblocking, implemented on a computing device by a processor configured to execute instructions that, when executed by the processor, direct the computing device to perform acts comprising: applying, by the processor, a Laplacian of Gaussian (LoG) operation on an image to produce a first plurality of values, the image being previously encoded using a quantization matrix; applying the LoG operation on the quantization matrix to produce a second plurality of values; determining a threshold responsive to the second plurality of values; comparing at least a portion of the first plurality of values to the threshold; ascertaining a number of the at least a portion of the first plurality of values that exceed the threshold; and if the number is less than a predetermined fraction, then labeling a discontinuity that is associated with the at least a portion of the first plurality of values as an artificial discontinuity.