ABSTRACT Photogrowth is a creativity support tool for the creation of nonphotorealistic renderings of images. The authors discuss its evolution from a generative art application to an interactive evolutionary art tool and finally into a meta-level interactive art system in which users express their artistic intentions through the design of a fitness function. The authors explore the impact of these changes on the sense of authorship, highlighting the range of imagery that can be produced by the system.

ABSTRACT This paper describes the artwork Codeform , an interactive, evolutionary ecosystem of virtual “creatures” created by scanning museum visitor admission tickets at the Ars Electronica Center in Linz, Austria, in 2014. The paper first describes technical mechanisms used to realize the work and then discusses the issues of finding a genotypic representation that is terse but expressive—that is, one that maximizes the useful variations that the genotype is capable of expressing in phenotype space.

ABSTRACT Interactive evolutionary design tools enable human intuition and creative decision-making in high-dimensional design domains while leaving technical busywork to the computer. Current evolutionary algorithms for interactive design tools accept only feedback about entire design candidates, not their parts, which can lead to user fatigue. This article describes several case studies in which designers used an enhanced interactive evolutionary design tool with region-of-interest feedback for character animation tasks. This enhanced interactive evolutionary design tool is called the Interactive Design with Evolutionary Algorithms and Sensitivity (IDEAS) tool. Designers’ feedback and narratives about their experiences with the tool show that interactive evolutionary algorithms can be made suitable for the ideation and generation of digital assets, even in time-varying domains.