摘要
利用像素比例映射方法原理,结合人为确定坐标轴像素起始点及输入对应代表的实际值,针对轴系规范中各类典型趋势曲线的变化比较光顺的特征,提出基于斜率变化程度控制搜索步长、根据斜率正负决定初始搜索方向的变步长曲线搜索方法。相比传统的像素邻域搜索方法,省去了图像细化的处理步骤,提高了搜索效率。
In view of the feature of smooth change in kinds of typical trend curves for shafting design criteria,the principle of pixel proportion mapping was used combined with manually set start pixel point in axis and inputted corresponding actual value. The method of variable step curve search was put forward based on controlling the search step by the extent of slope change and deciding the initial search direction by the plus-minus of slope change. Compared with the traditional neighborhood search method of pixel,this method has got rid of the steps of graphic refinement and improved the efficiency of search.
出处
《船海工程》
北大核心
2017年第4期140-143,共4页
Ship & Ocean Engineering
基金
江苏省科技计划项目(BE2015208)
关键词
趋势曲线
数据提取
趋势识别
算法
trend curve
data extract
trend recognition
algorithm
