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
Surface compression with geometric bandelets
ACM SIGGRAPH 2005 Papers
Image-Based Rendering
An efficient chain code with Huffman coding
Pattern Recognition
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
Shape-adaptive discrete wavelet transforms for arbitrarily shaped visual object coding
IEEE Transactions on Circuits and Systems for Video Technology
Depth and depth-color coding using shape-adaptive wavelets
Journal of Visual Communication and Image Representation
A polygon soup representation for multiview coding
Journal of Visual Communication and Image Representation
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We present a novel depth-map codec aimed at free-viewpoint 3D- TV. The proposed codec relies on a shape-adaptive wavelet transform and an explicit representation of the locations of major depth edges. Unlike classical wavelet transforms, the shape-adaptive transform generates small wavelet coefficients along depth edges, which greatly reduces the data entropy. The wavelet transform is implemented by shape-adaptive lifting, which enables fast computations and perfect reconstruction. We also develop a novel rate-constrained edge detection algorithm, which integrates the idea of significance bitplanes into the Canny edge detector. Along 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 algorithm, with PSNR gains of 5dB and more over the Middlebury dataset.