Template quadtrees for representing region and line data present in binary images
Computer Vision, Graphics, and Image Processing
Quadtree Optimization for Image and Video Coding
Journal of VLSI Signal Processing Systems - Special issue on recent development in video: algorithms, implementation and applications
JPEG 2000: Image Compression Fundamentals, Standards and Practice
JPEG 2000: Image Compression Fundamentals, Standards and Practice
Quadtree and R-tree indexes in oracle spatial: a comparison using GIS data
Proceedings of the 2002 ACM SIGMOD international conference on Management of data
A Hybrid, Hierarchical Data Structure for Real-Time Terrain Visualization
CGI '99 Proceedings of the International Conference on Computer Graphics
Reduction of blocking artifacts in JPEG compressed images
Digital Signal Processing
Efficiency of chain codes to represent binary objects
Pattern Recognition
Integrated Computer-Aided Engineering
Content adaptive mesh representation of images using binary space partitions
IEEE Transactions on Image Processing
Hierarchical segmentation-based image coding using hybrid quad-binary trees
IEEE Transactions on Image Processing
Enhanced frequency pattern of the 2-D Hartley transform for a new crop-resilient image transform
Integrated Computer-Aided Engineering
An incremental-encoding evolutionary algorithm for color reduction in images
Integrated Computer-Aided Engineering
SSDBM'10 Proceedings of the 22nd international conference on Scientific and statistical database management
Automatic image search based on improved feature descriptors and decision tree
Integrated Computer-Aided Engineering
Integrated Computer-Aided Engineering
Spatio-temporal resolution enhancement of vocal tract MRI sequences based on image registration
Integrated Computer-Aided Engineering
Computer theory and digital image processing applied to brain activation recognition
Integrated Computer-Aided Engineering
Ciratefi: An RST-invariant template matching with extension to color images
Integrated Computer-Aided Engineering
Integrated Computer-Aided Engineering
Quad-Tree Motion Estimation in the Frequency Domain Using Gradient Correlation
IEEE Transactions on Multimedia
Image compression using binary space partitioning trees
IEEE Transactions on Image Processing
Blocking effect reduction of JPEG images by signal adaptive filtering
IEEE Transactions on Image Processing
High performance scalable image compression with EBCOT
IEEE Transactions on Image Processing
Image quality assessment: from error visibility to structural similarity
IEEE Transactions on Image Processing
Rate-distortion optimized tree-structured compression algorithms for piecewise polynomial images
IEEE Transactions on Image Processing
On the Number of Rectangular Tilings
IEEE Transactions on Image Processing
Efficient quadtree coding of images and video
IEEE Transactions on Image Processing
A block-based MAP segmentation for image compressions
IEEE Transactions on Circuits and Systems for Video Technology
Quadtree structured region-wise motion compensation for video compression
IEEE Transactions on Circuits and Systems for Video Technology
Quadtree-structured variable-size block-matching motion estimation with minimal error
IEEE Transactions on Circuits and Systems for Video Technology
IEEE Transactions on Circuits and Systems for Video Technology
Integration of emerging computer technologies for an efficient image sequences analysis
Integrated Computer-Aided Engineering
Human automatic detection and tracking for outdoor video
Integrated Computer-Aided Engineering
A quadsection algorithm for grammar-based image compression
Integrated Computer-Aided Engineering - Anniversary Volume: Celebrating 20 Years of Excellence
Multiresolution streamline placement based on control grids
Integrated Computer-Aided Engineering
A new thresholding algorithm for document images based on the perception of objects by distance
Integrated Computer-Aided Engineering
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Although quad-trees are not the most successful strategy in image coding, some generalized subdivision schemes have been proposed recently. This work exploits a moderate generalization of quad-trees where tiles are not restricted to be split in both dimensions, which leads to a previously developed graph of anisotropic tiles called "bush". An algorithm is developed to find the minimal number of tiles to represent shapes, which is used to build a codec for bi-level and indexed color images. Also, a lossy codec based on tile-wise rate-distortion optimized quantization of low-frequency DCT coefficients is developed. The aim of this work is to investigate whether anisotropic tiles have an advantage over square tiles. The results indeed show significant improvements. The lossless algorithm is suitable for images with large continuous regions and high color payload, such as geographical maps. The lossy codec is able to compete with JPEG2000, especially for artificial images.