CAJ | 학술논문

针对灰度图像分段线性变换转折点选取的问题，提出了在直方图基础上使用 Otsu 法和格拉布斯法，设计了一种得到分段线性变换函数双转折点的方案。该方案自动选取双转折点，确定了灰度变换曲线，对图像的背景区、过渡区和目标区进行了很好的区分。该方案将背景和目标之间的过渡区进行线性增强，从而为边沿检测提供了有效的预处理方案。实验表明该方案寻找分段线性变换的转折点简单高效，具有较好的应用前景。
침대회도도상분단선성변환전절점선취적문제，제출료재직방도기출상사용 Otsu 법화격랍포사법，설계료일충득도분단선성변환함수쌍전절점적방안。해방안자동선취쌍전절점，학정료회도변환곡선，대도상적배경구、과도구화목표구진행료흔호적구분。해방안장배경화목표지간적과도구진행선성증강，종이위변연검측제공료유효적예처리방안。실험표명해방안심조분단선성변환적전절점간단고효，구유교호적응용전경。
In order to determine the transformation point in piecewise linear transformation of the gray image,put for-ward to make use of the Otsu method and the Grubbs method based on the histogram,a program which searches the double transformation points of a piecewise linear transform function is designed.The program selects the double turning points automatically,and then the gray scale transformation curve is determined,which cuts the image into a target area, a transition area and a background area with a good distinction.The transition area between the target area and the back-ground area is enhanced with the designed program,so as to provide an effective pretreatment for the next edge detec-tion.Experiments show that the solution which finds the turning points of the piecewise linear transformation in a simple and efficient,and has a good application prospects.