In non-gradient TRE method study we present local entropy based TRE and image segmentation method (LE-TREM), and local complexity based TRE and image segmentation method (C-TREM).

• 对过渡区直接提取的非梯度方法进行了研究,提出了基于局部熵的过渡区提取与分割算法,以及基于局部复杂度的过渡区提取与分割算法。