I am trying to make HDR images from pictures taken with the raspberry pi camera module . As I would like to work with the raw data, I converted the JPEG+RAW (raspberry format) to DNG and then used raw2hdr to generate de hdr image, however I am getting the following error:
*image.tif:needs exposure calibration *
Failure generating HDR image
Does anyone know why is this appearing, or if there is another way to work with this image format?
The images I am using can be found in the next link: https://drive.google.com/drive/folders/10g4plWazgKmRjnc2PPdoyqzv51Fi_iil?usp=sharing
Thank you and best wishes.