1. A method to be executed at least in part in a computing device for providing a sharpness metric associated with received video quality in a video conference system, the method comprising: receiving a decoded video frame at a post-processing module; dividing the frame into blocks; determining edge blocks by: determining a number of edge pixels in each block; if the number of edge pixels in a block is below a predefined threshold, designating the block a smooth block; if the number of edge pixels in another block exceeds the predefined threshold, determining numbers of edge pixels in neighboring blocks of the other block, and if the numbers of edge pixels in all neighboring blocks exceed the predefined threshold, designating the other block a texture block, else designating the other block an edge block; computing local sharpness metrics for each of the edge blocks based on a kurtosis and a motion vector for each respective edge block; and computing an overall sharpness metric for the frame by pooling the local sharpness metrics over the entire frame.