中文摘要：

利用藻种细胞生物形态差异进行图像分析是浮游生物显微图像识别的一种有效方法,但存在藻种库单一、局部生理特征难以形式化描述等难题。为了克服以上难题,将赤潮藻显微图像识别分解为精确分割、特征提取、特征降维和分类诊断四个渐进识别过程。采用多方向投影积分的方法定位分割出细胞目标,进一步对顶刺和横沟细节区域实现了精细分割;将藻种生理特征与机器识别特征一一对应,依次对形状、不变矩、纹理和局部形态两级特征进行了有效地特征提取和描述;采用支持向量机多类别分类模型进行分类识别。研究结果表明,该方法能准确分割目标,可对不同角度拍摄的15类藻种细胞显微图像完成快速分类。

英文摘要：

At present,the microscopic image identification of harmful algae based on biological morphological features are applied widely.However,there are some challenges,such as limited algae species resources,the difficulty of de-scribing biological detailed features.To solve these problems,the identification of harmful algae was divided into four gradual processes:precise segmentation,feature extraction,feature dimension reduction and classification.First,the method based on projection and integral on multiple directions was proposed to extract cell object,and then the spine and cingulum were extracted.Second,the effective description were proposed after shape features,moment invariants, texture features and domain specific features were extracted.Then,SVM classifier was designed to recognize objects. Experimental results showed that this algorithm could achieve the quicker and better segmentation and recognition of 15 species of algae.