OpenCV Python重映射数据类型错误

时间:2017-09-06 14:59:25

标签: python python-2.7 opencv

我正在尝试使用openCv重新映射图像,使用cv2和numpy,但我遇到了一些问题。我收到的错误是:

  

OpenCV错误:断言失败(((map1.type()== CV_32FC2 || map1.type()== CV_16SC2)&& map2.empty())||(map1.type()== CV_32FC1&&&&&&&&&&> map2.type()== CV_32FC1))重新映射,文件/tmp/binarydeb/ros-kinetic-opencv3-3.2.0/modules/imgproc/src/imgwarp.cpp,第5043行

但是这两个地图都是float32类型 - 所以我不太了解错误。我在函数中运行以下代码:

rows, cols, channels = img.shape

map_x = np.zeros( (rows,cols,channels), np.float32 )
map_y = np.zeros( (rows,cols,channels), np.float32 )

for i in xrange( rows ):
    for j in xrange( cols ):#

        p = [ i, j ]

        x = np.array( [ p[0], p[1], 1, p[0]*p[1]] )
        #Compute pixel transform
        trans = np.round( x.dot( self.w ) )

        map_x[i,j] = trans[0]
        map_y[i,j] = trans[1] 


outimg = cv2.remap( img, map1, map2, cv2.INTER_CUBIC )

提前致谢

1 个答案:

答案 0 :(得分:0)

转换为必填类型

Mat mat1 = new Mat() // or may be the input mat/map     
Imgproc.cvtColor(mat1, mat1, Imgproc.COLOR_BGR2GRAY); //Call this before conversion otherwise it won't work
mat1.convertTo(mat1,CvType.CV_32FC1);

有用链接:https://docs.opencv.org/3.1.0/da/d54/group__imgproc__transform.html#gab75ef31ce5cdfb5c44b6da5f3b908ea4