Project 2 - Red Onion - Photogrammetry Asset

Project 2 - Red Onion

    Today I decided to try out doing a shoot with another object. Since the coffee mug failed I decided that I was going to try using another organic asset like the apple as I got good results with this and I was unsure if the model material, colour, etc. had an effect on the bad results I got and whether it was just not a feasible model with my current setup.






    Above are some of the raw photos from the shoot, this time I didn't underexpose the lighting to experiment and see if I could determine the problem with the previous shoot. I also stood it on top of a black object like I did previously with the apple to separate it from the turntable as I wanted to recreate the apple shot as best as possible to see if the results were the same or different.

    


    Above are some of the masked photos from photoshop, due to the darker nature of the object and again the noticeable highlights on the surface of the object I tried to flatten the lighting as best as possible in lightroom before going to reality capture, below is a comparison image.


    Unfortunately it wasn't able to completely remove the highlights however the lighting is a lot more uniform across the object which is what most photogrammetrists say is the best lighting for a reality capture input, this affects the alignment process and the texture process respectively.



    Thankfully after putting the images into reality capture and once again altering alignment settings I was able to get quite a decent result and a good quality model that can then be added into the scene.

    In terms of the mug not working I am still unsure as to why this occurred and unfortunately have to put it down with my inexperience with photogrammetry and potentially some other factors such as the colours of the object and maybe the material as well. However as I expand my knowledge further I may be able to figure out what the issue was but for now I am happy with the result of this object.



    

 

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