System information (version)

• OpenCV => :3.4
• Operating System / Platform => :Windows 64 Bit / python
• Compiler => :(python 3.6)

Detailed description

OpenCV writes a hdr file with header starting with "#?RGBE". But many programs suppose "#?RADIANCE" and don't work on files with "#?RGBE". Would you change this header line to "#?RADIANCE"?