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opencv_traincascade line 152

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Hi All, I am trying to make their own cascade classifier. Here's what I've done: 1)positive file opencv_createsamples.exe -img sample.png -vec sample.vec -num 1000 -bgcolor 255 -randinv -w 196 -h 106 2)negative file bg.txt in image PATH. (PATH + name.jpg&png&gif) 3)traincascade opencv_traincascade -data sample/ -vec sample.vec -bg bg.txt -numPos 900 -numNeg 270 -featureType HAAR -mode ALL But...Here, the error will occur. Error code. ===== TRAINING 0-stage ===== OpenCV Error: Assertion failed (_img.rows * _img.cols == vecSize) in CvCascadeIm ageReader::PosReader::get, file C:\builds\master_PackSlave-win32-vc12-shared\opencv\apps\traincascade\imagestorage.cpp, line 152 Nothing no clue. I do not know what to do. Please help me. Sorry...I can't English.(Using Google Translation) Thanks for reading.

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