Adds a frame into the video visualizer. NOTE: The input frame is assumed to be with `RGB` channel order.

Saves the video by closing the file.

Defines a function that embeds x to (x, sin(2^k x), cos(2^k x), ...) in_channels: number of input channels (3 for both xyz and direct

Sets the path to save the video.

Checks whether a given image is valid. A valid image is expected to be with dtype `uint8`. Also, it should have shape like: (1) (height,

Sets the video frame size.

Wrapper for grid_sample, uses pixel coordinates

Checks whether the given filename is with target extension(s). NOTE: If `ext_list` is empty, this function will always return `False`. Args:

Photometric augmentation