使用opencv或javacv识别图像中具有相同颜色的轮廓？ [英] identify contours in a image which are having same color using opencv or javacv?

问题描述

这个问题与我的上一个问题在那个问题中我使用彩色图像作为输入，它通过使用线条颜色来识别，但我想知道如何使用灰度图像识别这种图像。
这是灰度输入图像，必须识别

This question is related to my previous question in that question I used color image as input and it identify by using line color but I like to know how to identify that kind of image using gray-scale image. This is the gray-scale input image and have to identify

我需要识别以下物体的位置（x和y坐标）。

And I need to identify following objects with its positions (x and y coordinates).

请一些人用简单的代码示例来解释这些对象，我需要识别这些对象的连接线（如下图所示）。

Please can some one explain with simple code example to identify those objects and I need to identify connected lines of those objects as well (As shown in following image).

请善待使用简单的代码示例来解释这一点。

Please be kind enough to explain this using simple code example.

推荐答案

解决方案的概念与之前的问题相同 - 使用扩展和侵蚀：

The concept of solution is the same as with previous question - use dilate and erode:

Mat src = imread("input.jpg"), tmp;

cvtColor(src, tmp, CV_BGR2GRAY);
threshold(tmp, tmp, 200, 255, THRESH_OTSU);

Mat element = getStructuringElement(MORPH_RECT, Size(3, 3), Point(1, 1));
dilate(tmp, tmp, element);
erode(tmp, tmp, element);

结果：

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