how to set the camera parameters about differentiable-renderer

[ndrplz]

Hi @kalyo-zjl ,

you can take a look of which is the role of these parameters here and here.

• You don't need to supply the center point. This is computed as the image center.
• The resolution_px is the camera resolution in pixel, i.e. the image you produce will have this resolution.
• The focal_len_mm is the focal length, expressed in mm of course. While composing the calibration matrix, this is converted to pixels by multiplying it for the px to mm ratio. This is why you provide also the sensor resolution in millimeters. In case you already have a focal length expressed in pixels, I guess you can directly inject it in place of these alphas.

Best,
Andrea