Need to load image from database c++

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asked 2014-01-17 06:13:43 -0600

Shan
21 ●1

I am newbie for Opencv. I need write a C++ program to load the tiff image stored in the database. So I read the image as char buffer and not sure how to create Mat object from the char buffer

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have a look at imdecode

berak ( 2014-01-17 06:26:54 -0600 )edit

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answered 2014-01-17 12:20:43 -0600

Pedro Batista

2213 ●5 ●18 ●42 https://lnkd.in/bw9XGH8

Assuming you retrieve an unsigned char* as your image data from the database, first you have to create the Mat structure that will hold this data:

cv::Mat image(rows, cols, type); //create Mat strucutre
image.data = (unsigned char*) charsFromDataBase; //add the data

cv::imshow("Image", image); //show the image
cv::waitKey(0); //wait until key is pressed

rows and cols are the dimensions of your image. Type is CV_8UC, which means 8bit unsigned char, which is what you have in your data base.