COLORCAST WINDOWS MEDIA CENTER DOWNLOADIs there some sort of lens profile with color cast correction I can download that works with Darktable and/or RawTherapee? Why can't Darktable and RawTherapee do this color cast correction? Now, let's look at Adobe Lightroom (Classic):Īgain, this is exactly how it comes in by default, no processing applied- but clearly, as indicated by the "Built-in Lens Profile applied" message on the right, Lightroom is using some sort of lens profile from either the image itself or Adobe's servers to correct both the lens distortion and, as it appears, the color cast as well! But the color cast? It's going to get hung up on that, and even if it doesn't, the generated textures will have large pink spots all over them. There's also another separate issue, and that's lens distortion- but that's not an issue for me, as my chosen photogrammetry engine can sense and correct that automatically. If you look closely at the color of the image in Darktable, you can see that the center of the image has a pink cast, and the outside of the image has a green cast. However, there's one issue here that Darktable (and RawTherapee, I tried it as well) isn't correcting for- sensor color cast. It looks terrible, but most of that can be corrected- it is a DNG after all, you're expected to do post processing manually. This is exactly how it comes in by default, I haven't changed any settings. Next, here's a screenshot of the DNG version of that photo in Darktable: Looks perfectly normal to me, except it's in a form where I can't control the processing of the photo in the way that I would like. COLORCAST WINDOWS MEDIA CENTER WINDOWSI was shooting in JPG+DNG mode, and this first image is the JPG as seen in Windows Photos: This is an example image from a previous project. I know that I should be using the DNGs and processing them into PNGs. That's going to confuse the heck out of the photogrammetry engine- and even if it doesn't, the textures will look patchy and vary in brightness.įor the previous photogrammetry projects I've done, I've just used the JPGs that the onboard image processing generates- but I can tell that they're not the best for photogrammetry. If you know anything about drone photogrammetry, you'll know that it's very sensitive to lighting conditions- if it's a patchy-clouded and windy day, you're going to have problems due to the changing brightness and contrast of objects from photo to photo. I've got a DJI Mini 2, and I've been using it for hobbyist photogrammetry, mapping, and other things.
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