Reflection Removal for 2D Images

The images taken through glass often capture a target transmitted scene as well as undesired reflected scenes. In this paper, we propose an optimization problem to remove reflection automatically from multiple glass images taken at slightly different camera locations. We first warp the multiple glass images to a reference image,... Read more

Reflection Removal for 3D Point Clouds

Large-scale 3D point clouds (LS3DPCs) captured by terrestrial LiDAR scanners often exhibit reflection artifacts by glasses, which degrade the performance of related computer vision techniques. In this paper, we propose an efficient reflection removal algorithm for LS3DPCs. We first partition the unit sphere into local surface patches which are then... Read more

Deep Learning

An image captured through a glass plane usually contains both of a target transmitted scene behind the glass plane and a reflected scene in front of the glass plane. We propose a semantic context based network to remove reflection artifacts from a single glass image. We first investigate a non-linear... Read more

Underwater Image Processing

Underwater images are easily degraded by various characteristics of underwater environment. We propose an underwater image enhancement algorithm which improves the low contrast and alleviates the color distortion. We first estimate the gradient of original scene image by scaling the gradient of an input underwater image with a corresponding transmission... Read more

Image and Video Dehazing

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... Read more

Saliency Detection

We propose a unified detection algorithm of view-independent and view-dependent saliency for 3D mesh models. While the conventional techniques use the irregular meshes, we adopt the semi-regular meshes to overcome the drawback of irregular connectivity for saliency computation. We employ the angular deviation of normal vectors between neighboring faces as... Read more

Multi-View Image and Video Stitching

Conventional stitching techniques for images and videos are based on planar warping models, and therefore, they often fail to work on multi-view images and videos which exhibit large parallax and include diverse non-planar structures at different scene depths. In this paper, we propose a novel video stitching algorithm for such... Read more

Multimedia Data Compression

A unified approach to rate-distortion (R-D) optimized compression and view-dependent transmission of three-dimensional (3-D) normal meshes is investigated in this work. A normal mesh is partitioned into several segments, which are then encoded independently. The bitstream of each segment is truncated optimally using a geometry distortion model based on the... Read more