中文说明：使用轮廓波变换绘制区域。它是给图像的。绘制等高线绘制给定图像的给定等高线。rMin、rMax、M和Nare如IMTOPOLAR中所定义。轮廓颜色是用于轮廓的颜色的[r g b]值。c是一个轮廓，每个Nθ由N个索引（从1到M）组成。它是一个N元素向量。
English Description：
to plot the region using contourlet transform. it is given to the images. PLOTCONTOUR Plots given contour to the given image. rMin, rMax, M and Nare as defined in IMTOPOLAR. contour_color is the [r g b] value of thecolor used for the contour.c is a contour consisting of N indices (from 1 to M) for each N theta. Itis a N element vector.