衡水学院学报
衡水學院學報
형수학원학보
Journal of Hengshui University
2009年
4期
25~27
,共null页
图像处理 边界信息提取 matlab应用 像素
圖像處理 邊界信息提取 matlab應用 像素
도상처리 변계신식제취 matlab응용 상소
image processing; boundary information extraction; matlab application; pixel
从平面图形中提取边界信息，是一项重要的数据处理技术，也是计算平面图形边界长度的基础．利用MATLAB进行平面图形边界信息提取的方法，处理过程依次为：保存为图像文件；调入MATLAB；确定边界像素坐标；边界像素坐标转为极坐标，把极角值安升序进行排列后再转换为直角坐标；最后把边界像素坐标实行线性变换转换为实际坐标．这里只对图像边界是简单闭曲线的情况进行了论述，对复杂的边界情况可以进行图像分割转换为几个边界为简单闭曲线的情况分别进行处理．
從平麵圖形中提取邊界信息，是一項重要的數據處理技術，也是計算平麵圖形邊界長度的基礎．利用MATLAB進行平麵圖形邊界信息提取的方法，處理過程依次為：保存為圖像文件；調入MATLAB；確定邊界像素坐標；邊界像素坐標轉為極坐標，把極角值安升序進行排列後再轉換為直角坐標；最後把邊界像素坐標實行線性變換轉換為實際坐標．這裏隻對圖像邊界是簡單閉麯線的情況進行瞭論述，對複雜的邊界情況可以進行圖像分割轉換為幾箇邊界為簡單閉麯線的情況分彆進行處理．
종평면도형중제취변계신식，시일항중요적수거처리기술，야시계산평면도형변계장도적기출．이용MATLAB진행평면도형변계신식제취적방법，처리과정의차위：보존위도상문건；조입MATLAB；학정변계상소좌표；변계상소좌표전위겁좌표，파겁각치안승서진행배렬후재전환위직각좌표；최후파변계상소좌표실행선성변환전환위실제좌표．저리지대도상변계시간단폐곡선적정황진행료논술，대복잡적변계정황가이진행도상분할전환위궤개변계위간단폐곡선적정황분별진행처리．
To extract boundary information from the planar graph is an important data processing technology and is the foundation of calculating the boundary length of the planar graph. The processes of the method in using MATLAB to extract boundary information in turn are saving as the image file, tuning into MATLAB, determining the boundary pixel coordinates, transferring pixel coordinates to polar coordinates, placing the elements of the polar angle values in ascending order and then tuning them to rectangular coordinates and transferring the linear transformation of boundary pixel coordinates to actual coordinates finally. And this paper merely discusses the image boundary with simple closed curve. Meanwhile, that the various complex boundaries can be tuned into several simple closed curves by splitting the images are treated respectively.
