Cv Mat Type

Anyone who knows how to deal with the p.

Cv mat type.

Mat int rows int cols int type scalar s. The class mat represents an n dimensional dense numerical single channel or multi channel array. Type has the same meaning as in cvcreatemat. A new matrix of the specified size and specifed type will be allocated.

As already properly pointed out by william you should provide only the correct type as a template argument for at i believe that cv mat itself is not made template only for simplification. It can be used to store real or complex valued vectors and matrices grayscale or color images voxel volumes vector fields point clouds tensors histograms though very high dimensional histograms may be better stored in a sparsemat. However opencv crew are trying to support c features including templates. Hi the dnn imagenet ex cpp example in line 141 load image as a matrix rgb pixel.

Using cv mat create nrows ncols type method or the similar constructor cv mat mat nrows ncols type fill value constructor. C mat vec uchar n abs a alpha beta is equivalent to convertscaleabs a c alpha beta the output matrix has the same size and the same type as the input one except for the last case where c is depth cv 8u. While mat is sufficient in most cases mat can be more convenient if you use a lot of element access operations and if you know matrix type at the compilation time. There are many different ways to create cv mat object.

Or use the universal filestorage i o functions to save the image to xml or yaml format. Note that mat at int y int x and mat operator int y int x do absolutely the same and run at the same speed but the latter is certainly shorter. Mat int rows int cols int type this constructor accepts three parameters of integer type representing the number of rows and columns in a 2d array and the type of the array that is to be used to store data. N dimensional dense array class.

If the format depth or channel order is different use mat convertto and cv cvtcolor to convert it before saving.