视觉选择注意机制模型及其应用

Model of Vision Selective Attention Mechanism and Its Application

结合目前生物学关于感受野研究的进展,提出具有方向性的高斯差算子(ODOG),并在此基础上建立视觉选择注意机制模型(VSAM)。ODOG算子通过改变感受野模版的大小适应不同分辨率的要求,同时具有方向性,符合目前对非经典感受野方面新的研究进展。VSAM模型基于bottom-up控制策略,通过对非经典感受野的模拟,以达到提取不同分辨率特征信息的目的。模型源于生物视觉启发,能较好地模拟感受野同心圆拮抗和方向选择性的特点,将其应用于眼底图像处理中,取得了预期的效果。

On the basis of the research of receptive field in biology, an arithmetic operator-Orientation Difference of Gaussians （ODOG） is proposed, and a Vision Selective Attention Mechanism （VSAM） model is presented based on ODOG. The ODOG arithmetic operator can adapt the request of different resolution by changing the size of receptive field template and has the characteristic of orientation. It accords with the new research development of non-classical receptive field. The VSAM model is based on the control strategy of bottom-up, and it can extract the information with different resolutions using the ODOG operator. The model is derived from biology vision and can simulate the feature of homocentric opponent and orientation selectivity of receptive field preferably. Finally, the application in fundus image processing obtains expected effect.