Dictionary-based improved fractal encoding underwater acoustic image compression algorithm
An image compression and fractal coding technology, which is applied in image analysis, image coding, image data processing, etc., can solve the problems of slow coding speed, less classification, and large amount of calculation, so as to improve the coding and decoding speed, reduce the number of matching times, and quickly The effect of encoding speed
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[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0024] The present invention comprises the steps:
[0025] Step 1: Julia set image generation.
[0026] The Julia set is a collection of fractal points on the complex plane named by the French scientist Gaston Julia. ( , are in the complex domain and is a constant) generated through iteration. This mapping produces an iteration sequence: , this sequence may tend to be infinite or always within a certain range and converge to a certain point, and the set of z values that make the sequence not diffuse is called Julia set (hereinafter referred to as J set). In the complex plane, make the mapping: The attractive boundary of is bounded complex parameter The set is called the Mandelbrot set (hereinafter referred to as the M set). From the definition of J set and M set, we can take points in M set as parameters Generate...
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