2013-07-24 06:47:55 -0600 | asked a question | Problem with LAb color space Hi everyone, This is my first post even if I read the forum quite often. I am having an issue with coversion from BGR to Lab space but it seems that I am the only one having this problem at the moment. I searched on the forum and on stack overflow for this issue but I found nothing. I tried to use the standard function cv::cvtColor(bgrImg,labImg,CV_BGR2Lab) however i have an issue with the input data type. If my inputs are both cv::Mat then i have no problem and I have an output Mat of type CV_8U3C with values in the range [0,255] for all channels. However if I define input and output matrix as Mat3f (I understood from the documentation that this is possible) then all pixels in the output matrix have a value of [100,0,0]. Did I get something wrong from the documentation? I am using opencv 2.4.6 prebuilt for windows. My ide is Visual Studio 2012 with VC2010 compiler. I tried also opencv 2.4.5 but the same problem esists. Thanks in advance, Alessandro |