Creates a 3x3 camera intrinsics matrix from the camera field of view, specified in degrees. Note the intrinsics are returned as normalized by

replace background pixel with random color in rendering

Create OpenGL camera extrinsics from camera locations and look-at position. camera_position: (M, 3) or (3,) look_at: (3) up_world: (

Predict Texture given triplanes :param planes: the triplane feature map :param tex_pos: Position we want to query the texture

Calculate the bounding box of a single object or the entire scene.

Additional filtering is applied to filter out-of-box samples. Modifications made by Zexin He.

Computes the location of zero-crossings on 'edges_x' using linear interpolation with 'edges_weight'.

Main function of our Generator. It first generate 3D mesh, then render it into 2D image with given `render_cameras`. :param p

Generate rgba images from rgb images which are with white background. Args: image_path (str): Path to the rgb image.

Defines planes by the three vectors that form the "axes" of the plane. Should work with arbitrary number of planes and planes of arbitrar

Function to generate mesh with give triplanes :param planes: triplane features

Return depths of approximately uniformly spaced samples along rays.

Regularizer L_dev as in Equation 8

Computes the location of dual vertices as described in Section 4.2

Obtains the ID of topology cases based on cell corner occupancy. This function resolves the ambiguity in the Dual Marching Cubes (DM

Identifies grid cubes that intersect with the underlying surface by checking if the signs at all corners are not identical.

Identifies grid edges that intersect with the underlying surface by checking for opposite signs. As each edge can be shared by multi

Normalizes the given weights to be non-negative. If input weights are None, it creates and returns a set of weights of ones.

Tetrahedralizes the interior volume to produce a tetrahedral mesh, as described in Section 4.5.

Connects four neighboring dual vertices to form a quadrilateral. The quadrilaterals are then split into triangles based on the gamma

Generates a voxel grid based on the specified resolution. Args: res (int or list[int]): The resolution of the voxel grid

Generate rgba images from rgb images which are with white background. Args: file_list_path (str): Path to the file list.