Input images after preprocessing. All six input channels are normalized. The two velocity channels are stained with red and blue to represent Doppler movement. Red (greater than 0) means that trie sun and the probe are far away from each other, and blue means that they are close to each other. Since OBSVR is an observation parameter that; is only related to time, the entire image has the same value. ROTVR is the line of sight component of the rotation velocity of the solar surface.