After a normal alining, deleting unwanted points, gradual selections and camera optimizations, I tried building a mesh to get a strange error: "Assertion 239101010894 failed. Image size mismatch: P1025274". Building dense cloud also leads to this error. Please let me know how I can escape this situation.
After I posted this question, I found the picture P1025274 is portrait, not landspcape. This must be the cause of error. Thanks!