A method including receiving a user selection of multiple image anchors for images within a canvas, and a query for each image anchor, is provided. The method includes finding a vector for the canvas in a merged space associated with the user selection of multiple image anchors, generating a synthetic image for the canvas based on the vector for the canvas in the merged space and an image from an image database, and evaluating a synthetic detectability based on a resemblance of the synthetic image with a real image. The method also includes providing the synthetic image for the canvas to a user when the synthetic detectability is lower than a pre-selected threshold. A system and a non-transitory, computer readable medium storing instructions to perform the above method are also provided.