Renders looking unrealistic/Odd Colors

[abhimanyuchadha96]

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🐛 Bugs / Unexpected behaviors

The renders don't look the real 3D object as the colors are off and details are also missing. Mostly the 3D objects that are white in color or have some amount of white in them are coming out grayish. Not sure if this is a bug or just the SoftPhongShader and/or RasterizationSettings need to be updated with a specific value.

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Instructions To Reproduce the Issue:

lights = DirectionalLights(device=device, direction = [self.centroid])
RasterizationSettings(
            image_size=2048,
            blur_radius=0,
            faces_per_pixel=1, bin_size = 100
        )

All other camera parameters are default taken from https://colab.research.google.com/github/facebookresearch/pytorch3d/blob/stable/docs/tutorials/render_textured_meshes.ipynb#scrollTo=CDQKebNNfBMI

[bottler]

The color of the lighting is  defaulted. See https://github.com/facebookresearch/pytorch3d/blob/main/pytorch3d/renderer/lighting.py#L164-L166 . So you can only see anything close to white at a specular highlight. If you want white things to be white, perhaps you could just use more ambient lighting, e.g. change the balance between the components, which should add to 1 in each channel, to something like

lights = DirectionalLights(
    device=device,
    ambient_color=((1.0, 1.0, 1.0),),
    diffuse_color=((0., 0., 0.),),
    specular_color=((0., 0., 0.),),
    direction = [self.centroid])