模糊影响感知的交互设计

图像的模糊变化会影响人类视觉对图像的感知。在特定条件下，它能提升人类感知和识别图像的能力。在摄像过程中，图像的清晰度或模糊度是由拍摄相机的参数决定的，需要较为专业的摄像器材，成本太高。论文构造一个图像模糊区域生成交互系统，以便于普通用户生成模糊区域达到特殊效果。具体表现为利用模糊算法，构建相机成像模型，通过操纵成像参数，达到对模糊有效操控，实现交互目的。交互平台内容主要包括，在图像上交互地生成一个与场景中一些平行线方向一致的网格，通过预设参数求出图像特定区域中的每个像素成像后的模糊量，最后合成模糊图像。在交互平台进行了实验，结果验证了算法和交互平台的有效性。

Blur Influence Perception of Interaction Design

Image blur change can affect human visual perception of images .In some specific situations ,it can enhance human perception and identification ability on images .The sharpness or ambiguity of a photois is determined by the parame-ters of the used camera in photography .This paper describes an interactive system which helps normal users to achieve spe-cial visual effectsvia blurring .Concretely ,based on an existing algorithm ,the camera imaging model is constructed ,and then the imaging parameters are manipulated to achieve effective blur control for attaining the goal of interaction .Components of the interactive system include a line drawing tool which helps users to draw line segments which are usually coincident of a beam of parallel lines in the scene ,calculation of blur quantity for each pixel using the preset parameters ,and generation of the blurred image .Finally ,some examples to are presented show the effectiveness and usability of the interactive platform .