V2EX 有做图像处理的同学吗？写了个 SLIC 超像素分割算法+OpenCV2 的类，简单易用~
answer42 2015-03-06 15:00:03 +08:00 5521 次点击这是一个创建于 3941 天前的主题，其中的信息可能已经有所发展或是发生改变。
代码
github链接：np-csu/SLIC-superpixel
Class explanation
void SLIC::GenerateSuperpixels(cv::Mat& img, UINT numSuperpixels)Perform SLIC algorithm on the given image with the given number of superpixels.
cv::Mat SLIC::GetImgWithContours(cv::Scalar color)Get the result image with contours on the given color.
int* SLIC::GetLabel()Get label on each pixel which shows the number of superpixel it belongs to.
Example
original image
200 superpixels
500 superpixels
第 1 条附言 2015-03-06 16:24:00 +08:00
## 增加了参数说明
* `void SLIC::GenerateSuperpixels(cv::Mat& img, UINT numSuperpixels)`
Perform SLIC algorithm on the given image with the given number of superpixels.
`img` - 24-bit or 8-bit cv::Mat
`numSuperpixels` - an appropriate number, no more than total number of pixels
* `cv::Mat SLIC::GetImgWithContours(cv::Scalar color)`
Get the result image with contours on the given color.
`color` - If input image is 24-bit, the color may be cv::Scalar(255, 0, 0) or cv::Scalar(0, 255, 0) or cv::Scalar(0, 0, 255).
If input image is 8-bit, the color may be cv::Scalar(0) or cv::Scalar(128) or cv::Scalar(255)
* `void SLIC::GenerateSuperpixels(cv::Mat& img, UINT numSuperpixels)`
Perform SLIC algorithm on the given image with the given number of superpixels.
`img` - 24-bit or 8-bit cv::Mat
`numSuperpixels` - an appropriate number, no more than total number of pixels
* `cv::Mat SLIC::GetImgWithContours(cv::Scalar color)`
Get the result image with contours on the given color.
`color` - If input image is 24-bit, the color may be cv::Scalar(255, 0, 0) or cv::Scalar(0, 255, 0) or cv::Scalar(0, 0, 255).
If input image is 8-bit, the color may be cv::Scalar(0) or cv::Scalar(128) or cv::Scalar(255)
23 条回复 2015-03-08 10:36:24 +08:00
 | 1 47jm9ozp 2015-03-06 15:12:45 +08:00 颜色空间转换可以直接用opencv内部的吧…… |
 | 5 zerh925 如果是边缘没有这么明显的图片呢 |
| 6 47jm9ozp 2015-03-06 17:06:41 +08:00 |
 | 7 answer42 OP @ooxxcc 是的，OpenCV自带一些颜色空间转换的函数，针对的是Mat格式。SLIC类中所带的转换函数针对的是unsigned int格式。 |
| 8 answer42 OP |
| 9 47jm9ozp 2015-03-06 17:39:28 +08:00 @answer42 转一下就好…… C++: Mat::Mat(Size size, int type, void* data, size_t step=AUTO_STEP) opencv自带的一些函数有各种优化，一般我都直接用，就不自己造轮子了。。 |
 | 10 Valyrian 2015-03-06 18:15:43 +08:00 computer vision课作业写过。。。 |
| 11 47jm9ozp 2015-03-06 18:17:05 +08:00 cv相关专业但是不知道为啥一直在做嵌入式学术上一事无成的飘过。。 |
 | 12 theoractice 2015-03-06 19:51:39 +08:00 看起来很好玩。想问下这个有啥应用呢？ |
 | 13 shakoon 2015-03-06 20:34:02 +08:00 看着很不错呢，楼主加油！ |
 | 14 jimmy66 2015-03-06 21:18:05 +08:00 这学期在学，先star了 |
| 16 answer42 OP |
| 17 answer42 OP |
 | 21 ywisax 2015-03-07 15:44:21 +08:00 必须star，太牛了 |
| 22 answer42 OP |
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