An intermediate image (161) is generated from stereo data (105) comprising a left image (101), a left disparity data (111), a right image (102) and a right disparity data (112). The intermediate image (161) corresponds to an intermediate view (155). A mixing policy (156) is determined based on a predicted image quality of the intermediate image (161). When the determined mixing policy (156) so requires, a left intermediate image (131) is generated from the left data (103) for the intermediate view (155). When the determining mixing policy (156) so requires, a right intermediate image (141) is generated from the right data (104) for the intermediate view (155). The intermediate image (161) is generated by mixing (180) the left intermediate image (131) and the right intermediate image (141), according to the mixing policy (156).