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google / nerfactor

Neural Factorization of Shape and Reflectance Under an Unknown Illumination
https://xiuming.info/projects/nerfactor/
Apache License 2.0
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questions about hdrs. #23

Closed sunwenzhang1996 closed 2 years ago

sunwenzhang1996 commented 2 years ago

Hi, i downloaded some hdr from poly heaven. But i find some differences between the hdr downloaded and the hdr provided. The max value of the sunset i download is about 300000, but the provide hdr is about 80. Is there any pre-process while dealing with the new hdr map?

xiumingzhang commented 2 years ago

Hi, the max value of your HDR map sounds reasonable. I didn't do preprocessing on the HDR maps; it might be just that the HDR maps I downloaded have a lower dynamic range than yours. The approach should still work with your HDR maps, but you may need to pay attention to the scale and avoid clipping when you produce the final rendering in JPEG, for example.