IMREAD_LOAD_GDAL produces images with RGB band order

[voinSR]

System information (version)

• OpenCV => 3.3.0
• GDAL => 2.2.1
• Operating System / Platform => Linux 64 Bit (CentOS 7)
• Compiler => GCC 7.2

Detailed description

Hello, when reading color raster image using GDAL (IMREAD_LOAD_GDAL flag), the band order is RGB, which is reversed from opencv standart one -> BGR. This is not a big problem, but still challenging when I want to save image after some manipulation/or overlay something on it and then write it using imwrite.

Steps to reproduce

just open any image with IMREAD_LOAD_GDAL flag - imread(file, IMREAD_LOAD_GDAL).

Thank you

[sturkmen72]

image = imread( imageName, IMREAD_LOAD_GDAL ); // Read the file
cvtColor(image, image, COLOR_RGB2BGR); // convert it to BGR