Abstract: A method includes: obtaining a first image including a foreground, a second image including a background, and soft segmentation of the foreground; and inputting the first image, the second image, and the soft segmentation into an image matting network, and outputting a foreground segmentation of the first image. The image matting network includes at least one stage network that includes a context combining module, a stem block, and a predictor module. The first image, the second image, and the soft segmentation of the foreground are inputted into the context combining module, the context combining module is configured to output a low-order feature and a high-order feature after feature exchange, the stem block is configured to fuse the low-order feature and the high-order feature based on an attention mechanism to obtain a fused feature, and the predictor module is configured to output the foreground segmentation according to the fused feature.