This was a very interesting model to work on. I tried something new with this one, I used linear polarized film over my lights to produce polarized lighting and a circular polarized filter on my camera to create cross polarization to remove most of the sheen/highlights from the avocado.
Glossy, reflective, shiny things tend to produce flawed or unusable models in photogrammetry. As such, you need to remove all of that if you are to produce something unusable. After doing some research online, I found that people utilize polarization to do that, so I gave it a shot and it works pretty well.
When I was working on this, I realized I could modify the diffuse map in photoshop to produce versions depicting different degrees of ripeness from the green unripe to the black ripe version. 
This is pretty cool because if for some reason one needed an avocado for a render or a composite, one could adjust the ripeness, roughness, and texture of the model by making adjustments to the maps. This allows for a lot of flexibility with a single model. Also, by using a MixRGB shader node in Blender you can achieve any degree of ripeness or even animate the avocado ripening, with just an unripe and fully ripe texture.
Overall, this was a fun and educational project to work on and the resulting model and maps are among the best I've managed to produce thus far. 
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