There are several ways to deal with the problem of picture failure in pixel cake: 1. Editing pictures: adjust the size, color and contrast of pictures in the picture editing software to reduce or eliminate the traces of goof. 2. Replace the material: replace the original material with a material similar to the scene or characters to make it more integrated with the surrounding environment. 3. Editing the picture: By editing or shielding the picture, the audience's attention to the problem of laziness is reduced. 4. Adjust the angle and position: change the lens angle or readjust the position of the object to eliminate the gang traces. 5. Use special effects: Use some special effects, such as blurring and blurring, to reduce the influence of gang traces. It needs to be treated according to the specific situation. Generally speaking, it is necessary to combine the context to judge whether it needs to be treated, so as not to lose the original effect because of excessive polishing.