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#define lengthcount (nsamples*3) |
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#define samplefac 1 |
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|
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< |
/*----------------------------------------------------------------------*/ |
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/* */ |
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/* NeuQuant */ |
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/* -------- */ |
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/* */ |
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/* Copyright: Anthony Dekker, November 1994 */ |
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/* */ |
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/* This program performs colour quantization of graphics images (SUN */ |
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/* raster files). It uses a Kohonen Neural Network. It produces */ |
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/* better results than existing methods and runs faster, using minimal */ |
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/* space (8kB plus the image itself). The algorithm is described in */ |
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/* the paper "Kohonen Neural Networks for Optimal Colour Quantization" */ |
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/* to appear in the journal "Network: Computation in Neural Systems". */ |
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/* It is a significant improvement of an earlier algorithm. */ |
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/* */ |
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/* This program is distributed free for academic use or for evaluation */ |
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/* by commercial organizations. */ |
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/* */ |
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/* Usage: NeuQuant -n inputfile > outputfile */ |
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/* */ |
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/* where n is a sampling factor for neural learning. */ |
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/* */ |
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/* Program performance compared with other methods is as follows: */ |
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< |
/* */ |
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/* Algorithm | Av. CPU Time | Quantization Error */ |
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/* ------------------------------------------------------------- */ |
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/* NeuQuant -3 | 314 | 5.55 */ |
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/* NeuQuant -10 | 119 | 5.97 */ |
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/* NeuQuant -30 | 65 | 6.53 */ |
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/* Oct-Trees | 141 | 8.96 */ |
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/* Median Cut (XV -best) | 420 | 9.28 */ |
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/* Median Cut (XV -slow) | 72 | 12.15 */ |
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/* */ |
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/* Author's address: Dept of ISCS, National University of Singapore */ |
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/* Kent Ridge, Singapore 0511 */ |
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/* Email: [email protected] */ |
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/*----------------------------------------------------------------------*/ |
| 236 |
> |
/* NeuQuant Neural-Net Quantization Algorithm Interface |
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> |
* ---------------------------------------------------- |
| 238 |
> |
* |
| 239 |
> |
* Copyright (c) 1994 Anthony Dekker |
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> |
* |
| 241 |
> |
* NEUQUANT Neural-Net quantization algorithm by Anthony Dekker, 1994. |
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> |
* See "Kohonen neural networks for optimal colour quantization" |
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> |
* in "Network: Computation in Neural Systems" Vol. 5 (1994) pp 351-367. |
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> |
* for a discussion of the algorithm. |
| 245 |
> |
* See also http://members.ozemail.com.au/~dekker/NEUQUANT.HTML |
| 246 |
> |
* |
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> |
* Any party obtaining a copy of these files from the author, directly or |
| 248 |
> |
* indirectly, is granted, free of charge, a full and unrestricted irrevocable, |
| 249 |
> |
* world-wide, paid up, royalty-free, nonexclusive right and license to deal |
| 250 |
> |
* in this software and documentation files (the "Software"), including without |
| 251 |
> |
* limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 252 |
> |
* and/or sell copies of the Software, and to permit persons who receive |
| 253 |
> |
* copies from any such party to do so, with the only requirement being |
| 254 |
> |
* that this copyright notice remain intact. |
| 255 |
> |
*/ |
| 256 |
|
|
| 257 |
|
#define bool int |
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|
#define false 0 |
