So we used the most novel matching method-feature vector method to propose two fast algorithms: one is relative gradient-based algorithm, the other is cross trace-based algorithm.
本文参考了分形编码中现在最新颖的匹配算法-特征向量法，提出了基于相对梯度的快速编码和基于叉迹特征的快速编码算法。
Simulation results show that the natural gradient approach has faster convergence speed and better separation performance than the conventional gradient based algorithm.
仿真结果显示，自然梯度算法比传统梯度算法收敛速度更快，分离效果更好。
Then, a multiscale morphology gradient-based watershed segmentation algorithm is introduced to segment the video frame in the spatial domain.
然后，引入基于多尺度形态梯度的分水岭分割算法，对图像进行空域分割。
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