Fractal Image Compression: Theory and Application |
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Page 16
... quadtree partition ( 5008 squares ) , ( b ) an HV partition ( 2910 rectangles ) , and ( c ) a triangular partition ( 2954 triangles ) . Quadtree Partitioning A weakness of the example of Section 1.4 is the use of fixed - size R ;, since ...
... quadtree partition ( 5008 squares ) , ( b ) an HV partition ( 2910 rectangles ) , and ( c ) a triangular partition ( 2954 triangles ) . Quadtree Partitioning A weakness of the example of Section 1.4 is the use of fixed - size R ;, since ...
Page 55
... quadtree partitions are made ( corresponding to a minimum tree depth ) , the squares at the nodes are compared with domains Figure 3.1 : A quadtree partition is a representation of 55 Fractal Image Compression with Quadtrees Y Fisher.
... quadtree partitions are made ( corresponding to a minimum tree depth ) , the squares at the nodes are compared with domains Figure 3.1 : A quadtree partition is a representation of 55 Fractal Image Compression with Quadtrees Y Fisher.
Page 160
... quadtree range partition which allows blocks of size 2b × 2b . 2ba x2ba . The corresponding allowed domain block sizes are 2d × 2d , ... , 2da × 2da . We assume the ordering b1 = b2 + 1 = bq + q - 1. The decimation factors used are 2d ...
... quadtree range partition which allows blocks of size 2b × 2b . 2ba x2ba . The corresponding allowed domain block sizes are 2d × 2d , ... , 2da × 2da . We assume the ordering b1 = b2 + 1 = bq + q - 1. The decimation factors used are 2d ...
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Common terms and phrases
affine transformation approximation archetypes attractor average B₁ basis vectors Chapter classification cluster centers codebook blocks coefficients Collage Theorem compression ratio compute Contractive Mapping convergence decoding algorithm decoding method define denote domain and range domain block domain pool domain vectors domain_x domain-range edges encoding Equation eventually contractive example Figure fixed point flag fractal coding fractal dimension given grey-scale hsize image compression inference algorithm inner product iterated function systems Lebesgue measure Lenna lines matrix max_part method metric minimize node offset operator optimal original blocks original image orthogonal orthonormal basis output parameters piecewise PIFS code pixel values PSNR quadrant quadtree partition quantization r₁ range block range vectors recursive resolution samples scale factor scheme Section signal space square subset subspace subsquare super-resolution vector quantization vsize w₁ wavelet xsize/2 y_exponent