{"topic": "Crop HDRIs in radiance and evalglare", "category": "hdri", "attachments": [], "created_by_name": "<NAME>", "created_at": "February 26, 2014 at 07:33AM", "body": "Dear list,\n\n\nI am trying to glare analysis via HDR images captured by a canon DSLR Camera and sigma fish eye lens.\n\n\nThe procedure that I use was\n\n\n1. Taking 13 images via gphoto2 +Crontab\n\n\n2. Creating HDR images in HDRgen\n\n\n3. Resize\npfilt -x 1433  -y 955 Big.hdr > resize.hdr\n\n\n4.Crop & cleaning mask\nra_xyze -r -o -u resize.hdr | pcompos -x 800 -y 800 - -315 -78 > crop.hdr | pcomb -s -1000 output_masked2.hdr\n\n\n5. Evalglare analysis\necho \"VIEW= -vta -vh 180 -vv 180 -vp 0 0 0 -vd 1 0 0 -vu 0 0 1\" > output_masked2.hdr\nevalglare output_masked2.hdr\n\n\nThe problem is that Evalglare reports errors after the crop process.\n\n\nerror: no valid view specified\n\n\n(There was no evalglare errors when I test it with the resized image.)\n\n\nI has checked the luminance values of the HDR in photosphere and it looks OK!\n\n\nDo I need to use another crop command for evalglare processing?\n\n\nPlease, let me know if you have any ideas.\n\n\nBest regards,\n<NAME>\nPh.D. student\nTexas A&M University\n___\n<sup>Automatically generated content from [radiance mailing-list](https://radiance-online.org/pipermail/hdri/2014-February/000512.html).</sup>", "id": "hdri_000512", "created_by": "Jonghoon_Kim"}