转换opencv的HSV相当于Matlab的胸苷 [英] Convert Opencv hsv equivalent to Matlab Hsv

问题描述

我已经使用OpenCV中，$ C $相当于C到MATLAB开发Android code。
在这我要读图像并将其转换为HSV，我已经这样做了使用：

I have to develop android code using opencv,code equivalent to MATLAB. In that I have to read an image and convert it to HSV and I have done this using :

Imgproc.cvtColor(temp, hsv   , Imgproc.COLOR_RGB2HSV);

和当我遍历在顺化，其中在Matlab返回在0-1范围内，我不知道如何写一个相当于code为它的0-255范围返回像素的每个像素值。
我是一个beginner.I不知道很多有关的图像处理。

and when I am iterating over each pixels value of pixel returned in range of 0-255 of Hue ,where in Matlab it returns in range of 0-1 , I dont know how to write an equivalent code for it . I am a beginner.I dont know much about image processing.

推荐答案

RGB图像的值的范围是，明明[0,255]。对于HSV图像这取决于图像类型（见 OpenCV的文档 ）：

The range of values of RGB images is, obviously in [0, 255]. For HSV images it depends on the image type (see OpenCV doc):

• 8位图片：在H [0,180]，S，V在[0，255]


• 32位图片：在H [0，360]，S，V在[0,1]

• 8 bit images: H in [0, 180], S,V in [0, 255]
• 32bit images: H in [0, 360] ,S,V in [0,1]

所以，以后你转换为HSV

So, after you convert to HSV

Imgproc.cvtColor(temp, hsv, Imgproc.COLOR_RGB2HSV);

您需要以不同的缩放H和S，V值。您可以使用<一个href=\"http://docs.opencv.org/java/org/opencv/core/Core.html#split(org.opencv.core.Mat,java.util.List)\"相对=nofollow>分裂和<一个href=\"http://docs.opencv.org/java/org/opencv/core/Core.html#merge(java.util.List,org.opencv.core.Mat)\"相对=nofollow>合并以获得不同的信道矩阵的计算方法，并应用正确的缩放。

you need to scale the H and S,V values differently. You can use split and merge to get the different channels matrice, and apply correct scaling.

请注意，OpenCV的商店RGB图像作为BGR，所以你可能需要 COLOR_BGR2HSV 。

Note that OpenCV stores RGB images as BGR, so you probably need COLOR_BGR2HSV.

您可以拆分和合并，如：

You can split and merge like:

List<Mat> planes = new ArrayList<Mat>(3);
Core.split(hsv, planes);
// Scale each single plane
Core.merge(planes , hsv);

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