Need to load image from database c++

Question

I am newbie in OpenCV. I need to write a C++ program that loads the tiff image stored in the database. So I read the image as char buffer and I'm not sure how to create Mat object from that buffer.

is that buffer a tiff image ( like on disk, with headers and such ) ? or pixels ? — berak
– berak, Commented Jan 17, 2014 at 12:18
It is a image file which is uploaded to database as binary data. The C++ program need to read the binary data from the database — Shan
– Shan, Commented Jan 17, 2014 at 12:26

herohuyongtao · Accepted Answer · 2014-01-17 12:39:17Z

3

You need:

read the binary data into a std::vector, and then

feed that into imdecode().

std::vector<char> buffer(data,data+len); 
Mat img = imdecode(buffer,-1); // use the data as is

edited Jan 17, 2014 at 12:39

answered Jan 17, 2014 at 12:33

herohuyongtao

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