A Computational Approach to Edge Detection
IEEE Transactions on Pattern Analysis and Machine Intelligence
The lifting scheme: a construction of second generation wavelets
SIAM Journal on Mathematical Analysis
JPEG 2000: Image Compression Fundamentals, Standards and Practice
JPEG 2000: Image Compression Fundamentals, Standards and Practice
A Taxonomy and Evaluation of Dense Two-Frame Stereo Correspondence Algorithms
International Journal of Computer Vision
High-quality video view interpolation using a layered representation
ACM SIGGRAPH 2004 Papers
Surface compression with geometric bandelets
ACM SIGGRAPH 2005 Papers
Image-Based Rendering
Error analysis for image-based rendering with depth information
IEEE Transactions on Image Processing
Shape-adaptive wavelet encoding of depth maps
PCS'09 Proceedings of the 27th conference on Picture Coding Symposium
An efficient chain code with Huffman coding
Pattern Recognition
Wavelet footprints: theory, algorithms, and applications
IEEE Transactions on Signal Processing
Rate-distortion optimized tree-structured compression algorithms for piecewise polynomial images
IEEE Transactions on Image Processing
The contourlet transform: an efficient directional multiresolution image representation
IEEE Transactions on Image Processing
Wavelet-domain approximation and compression of piecewise smooth images
IEEE Transactions on Image Processing
IEEE Transactions on Image Processing
Shape-adaptive discrete wavelet transforms for arbitrarily shaped visual object coding
IEEE Transactions on Circuits and Systems for Video Technology
Multiview depth coding based on combined color/depth segmentation
Journal of Visual Communication and Image Representation
ADR shape descriptor - Distance between shape centroids versus shape diameter
Computer Vision and Image Understanding
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We present a novel depth and depth-color codec aimed at free-viewpoint 3D-TV. The proposed codec uses a shape-adaptive wavelet transform and an explicit encoding of the locations of major depth edges. Unlike the standard wavelet transform, the shape-adaptive transform generates small wavelet coefficients along depth edges, which greatly reduces the bits required to represent the data. The wavelet transform is implemented by shape-adaptive lifting, which enables fast computations and perfect reconstruction. We derive a simple extension of typical boundary extrapolation methods for lifting schemes to obtain as many vanishing moments near boundaries as away from them. We also develop a novel rate-constrained edge detection algorithm, which integrates the idea of significance bitplanes into the Canny edge detector. Together with a simple chain code, it provides an efficient way to extract and encode edges. Experimental results on synthetic and real data confirm the effectiveness of the proposed codec, with PSNR gains of more than 5dB for depth images and significantly better visual quality for synthesized novel view images.