Draw a marker: problems with PTS parameter
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Hi,
I've a matrix/image 256x256 of binaries and a set of points as matrix indices [m n]
[m n] =
45 98
23 118
45 185
I want to draw markers in these points. I tried with Computer Vision toolbox by:
markerInserter = vision.MarkerInserter
J = step(markerInserter,bw,[m n])
But it returns an error:
Error using MarkerInserter/step
The Pts input data type must be integer.
I don't understand it. Coordinates are integers.
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Anand
2013-11-18
The coordinates may be integer valued, but are not stored in an integer datatype. You can see this if you do the following:
>> class(m)
I'd expect you to see double as the result. In order to use the MarkerInserter, points are expected to be of an integer datatype, namely one of the following: uint8, uint16, uint32, uint64, int8, int16, int32 or int64.
So, you can convert the matrix indices to an integer type:
J = step(markerInserter,bw,uint32([m n]));
Hope this helps!
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