We analyze the subjective perceived picture quality of coded stereoscopic pictures which are disparate in the object-and background-regions using a single stimulus evaluation method. In .addition, we examine subjective differences in perceptions of picture quality between stereoscopic pictures and 2-dimensional displayed pictures. When the picture quality in the object-and background-region is the same, no significant difference is seen in the evaluation value of the stereoscopic picture and

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... counterpart 2-dimensional displayed picture. When the picture quality of the object-region is different from the picture quality of the background-region, the obtained subjective picture quality of the stereoscopic picture is the same as or better than the evaluation value of the 2-dimensional displayed picture. The extent of this tendency correlates with the proportion of the object region to the entire image.