Learn More
A fast and optimized dehazing algorithm for hazy images and videos is proposed in this work. Based on the observation that a hazy image exhibits low contrast in general, we restore the hazy image by enhancing its contrast. However, the overcompensation of the degraded contrast may truncate pixel values and cause information loss. Therefore, we formulate a(More)
(a) t = 0 (b) t = 5 (c) t = 15 (d) t = 30 (e) t = 70 (f) t = 200 Figure 1: Double random walkers with the repulsive restart rule. Red and blue walkers move interactively to divide a point set into two clusters. The top two rows depict the probability distributions of the red and blue walkers, and the bottom row shows the clustering results. The clustering(More)
An efficient coding algorithm for depth map images and videos, based on view synthesis distortion estimation, is proposed in this work. We first analyze how a depth error is related to a disparity error and how the disparity vector error affects the energy spectral density of a synthesized color video in the frequency domain. Based on the analysis, we(More)
An unsupervised video object segmentation algorithm, which discovers a primary object in a video sequence automatically , is proposed in this work. We introduce three energies in terms of foreground and background probability distributions: Markov, spatiotemporal, and antagonistic energies. Then, we minimize a hybrid of the three energies to separate a(More)
A primary object discovery (POD) algorithm for a video sequence is proposed in this work, which is capable of discovering a primary object, as well as identifying noisy frames that do not contain the object. First, we generate object proposals for each frame. Then, we bisect each proposal into foreground and background regions, and extract features from(More)