Capturing images serves as a primary means of capturing and recording the world, playing an indispensable role in our three-dimensional world. An image is a visual record I projected onto a two-dimensional plane by the camera imaging function \(f\) from the real-world scene S, providing us with a window to observe and understand the world. However, the real world is three-dimensional, and the recorded images are two-dimensional with limited resolution, so this conversion process inevitably involves information loss. Despite this, we still hope to reconstruct the scene described in the image.