opensfm/io.py [374:385]:
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        return {
            "projection_type": camera.projection_type,
            "width": camera.width,
            "height": camera.height,
            "focal_x": camera.focal,
            "focal_y": camera.focal * camera.aspect_ratio,
            "c_x": camera.principal_point[0],
            "c_y": camera.principal_point[1],
            "k1": camera.k1,
            "k2": camera.k2,
            "k3": camera.k3,
            "k4": camera.k4,
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opensfm/io.py [406:417]:
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        return {
            "projection_type": camera.projection_type,
            "width": camera.width,
            "height": camera.height,
            "focal_x": camera.focal,
            "focal_y": camera.focal * camera.aspect_ratio,
            "c_x": camera.principal_point[0],
            "c_y": camera.principal_point[1],
            "k1": camera.k1,
            "k2": camera.k2,
            "k3": camera.k3,
            "k4": camera.k4,
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