You can repair one side of the UV split line first, then the other. After handling the UV boundaries, use the color blending function in Photoshop to create color transitions along the edges and eliminate seams. Alternatively, you can start with a full edit in Photoshop, and if issues persist, use Blender for additional touch-ups (please note: Blender's texture editing tools only offer a stamping feature and may run with noticeable lag).

- Import the model: Import the colored OBJ model into the software and select it in the interface.

- Start simplification: Click the "Mesh" menu in the toolbar and select the "Simplify" function.

- Set parameters: Adjust the simplification ratio as needed, then confirm by clicking "OK."

- Save the result: After simplification is complete, the system will automatically generate a new model data. Select this data and click "Save" to export the simplified colored OBJ file.

Aligning corresponding points: The grid needs to be in the same viewport as the photo image. Use the ALT key to zoom in on a local area. Select corresponding points with the left mouse button. Press the space bar to switch between the grid and the photo. When there are at least 6 pairs of corresponding points, click {Align} - corresponding points alignment.

When opening the ASC file with a text editor (e.g., Notepad), you can read three types of core data of the point cloud: three-dimensional spatial coordinates (x, y, z), normal vector parameters (i, j, k), and normalized color information (r, g, b).