That’s because by default, Photoshop is using the whole image to match colours, including all that black. Hopefully you can see straight away in the above image that the altered jaw texture looks wrong. In my case, that’s the C1Tex file that’s open:
Use the dropdown source menu to select the texture you want to match to. This brings up a menu, and you need to select the source image you’re going to match to: Then go to Image->Adjustments->Match Color You’d think Adobe would localize the menus so it’s spelt properly in UK English! Now make sure you’re working in the image you want to change, in this case I select JawTex.jpg by clicking it’s tab at the top. Select the black (contiguous off, so it selects all the black parts), then invert the selection, so only the coloured areas are selected. So, using the magic wand tool, I select all the black in the C1Tex image (make sure ‘contiguous’ is unticked), then I invert the selection with ctrl-shift-I, so that the image just has the areas of colour selected: That makes colour matching slightly more difficult, because we don’t want to use the black – it’ll make our modified jaw texture black in places.
PHOTOSHOP COLOR MATCH SOFTWARE
That’s because I did the vertebrae with Meshroom, which creates isolated islands in the texture, but the Skull and Jaw were done in Metashape, which blends colours between areas of texture (there’s no reason I picked Meshroom or Metashape other than my photogrammetry software of choice at any given time changes on a whim).
You can see from my screenshots that the vertebrae textures have a lot of black space in them, but the skull and jaw do not. C1Tex and JawTex both loaded into photoshop and viewed together (note, they are seperate images, not layers in a single image).
PHOTOSHOP COLOR MATCH FREE
It may be possible in other software, but much like for object selection and background removal, Photoshop seems to still have features that make it worth using, especially if you get it free through work. Unfortunately, I’ve not found an easy/obvious similar functionality in Krita, Gimp, or Affinity Photo. So, I used Photoshop’s colour match tool to make the jaw and skull look more like the vertebrae (the greenish tinge is what I’d consider the more real colour balance). Note that I duplicated everything into texbackup before I started messing with changing any files, so I can undo any changes if it all goes wrong! To fix this, I saved out all the texture files to a folder: You can see the difference in colour balance more clearly here, between the Cervical Vertebrae textures (C1Tex, C2Tex, etc) and the skull and jaw. Here’s the models in Blender: The skull and Jaw both look whiter, or pinker, than the vertebrae which have a greenish tint. It’s fairly subtle, but it annoys me, and as this model will be going on sale on sketchfab, I want it to be perfect.
As a result, the colours are slightly different. For the vertebrae, I was able to use my automated small photogrammetry setup, but the skull and jaw were too large for this, so I had to do them separately, using a ring light. This is the result of my digitizing the bones in different environments. However, you may notice from the video that the skull and jaw are whiter, or perhaps pinker, than the vertebrae, which have a greenish tint to them. VUiXmVSE4b- Peter Falkingham September 29, 2021 Very pleased with the quality, will be up on sketchfab this week. The textures on the verts still need a little colour correction, but this sheep skull+neck has been a little #photogrammetry project of mine for a while – each bone done individually at a very high res.
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