This is the one you ll see in most of the older tutorials and educational materials.
Opencv mat documentation.
Generated on mon sep 28 2020 02 12 30 gmt opencv 4 4 0 295 g19f4cc57c1.
Another opencv idiom in this function a call of mat create for the destination array that allocates the destination array unless it already has the proper size and type.
Generated on fri oct 2 2020 06 35 28 gmt opencv 4 4 0 326 ga3e7c2d8e3.
Public mat int rows int cols int type java nio bytebuffer data long step mat public mat size size int type mat public mat int sizes int type mat public.
And while the newly allocated arrays are always continuous you still need to check the destination array because mat create does not always allocate a new matrix.
Opencv has been around since 2001.
4 3 0 zip 80 6 mb.
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The problem with this is that it brings to the table all the minuses of the c language.
In those days the library was built around a c interface and to store the image in the memory they used a c structure called iplimage.