  Video enhancement plays an important role in various video applications. In
this paper, we propose a new intra-and-inter-constraint-based video enhancement
approach aiming to 1) achieve high intra-frame quality of the entire picture
where multiple region-of-interests (ROIs) can be adaptively and simultaneously
enhanced, and 2) guarantee the inter-frame quality consistencies among video
frames. We first analyze features from different ROIs and create a piecewise
tone mapping curve for the entire frame such that the intra-frame quality of a
frame can be enhanced. We further introduce new inter-frame constraints to
improve the temporal quality consistency. Experimental results show that the
proposed algorithm obviously outperforms the state-of-the-art algorithms.
