Abstract: With regard to the features of the big skin exposure in the adult images, we propose a hybrid detection approach which is composed of such three parts as color filtering, texture filtering and geometry filtering. A subsection processing skin color model was used to filter the non-skin color pixels and get the candidate skin regions. Then a coarse-degree-based texture filtering was used to filter the pixels with rough texture and skin color tone. At last we filtered the skin-like region (such as deserts or beaches) by fractal dimensions. The experimental results indicate this approach has high detection ratio and high precision.

Key words: skin detection, skin modeling, skin texture, texture coarse degree, fractal dimension

摘要： 针对色情图片中大块皮肤区域的特点，提出一种简单有效的检测方法。首先通过RGB颜色空间上的一个分段肤色模型过滤掉非肤色像素，得到候选皮肤区域；然后利用候选区域内像素的纹理粗糙度，统计得到整个候选区域的纹理粗糙度进行纹理过滤；最后计算候选肤色块的分形维数，用以过滤最难区分的沙漠类照片中的伪皮肤区域。实验结果表明，算法保持了较高的检出率和较低的误检率。

关键词: 皮肤检测, 肤色建模, 皮肤纹理, 纹理粗糙度, 分形维数