Earticle

초록

영어

This paper proposes a prompt–optimization framework for generating style–consistent game images using Stable Diffusion XL. Given a reference game item image, the system first extracts an initial prompt using a vision–language captioner and a domain–specific prompt bank. The extracted prompt is converted into a list of noun-like elements, and a genetic algorithm searches for compact combinations of these elements under dual gating based on SSIM and CLIP scores. The best combinations are treated as a “style template” that can reproduce the reference image with high structural and semantic similarity. We then investigate whether this template can be reused when the main object is changed while preserving the original visual style. Experiments on fantasy-style item images show that the framework reconstructs reference images using only 8–9 automatically discovered prompt elements, and that changing the main object token together with associated detail elements yields image sets that share a consistent visual style. In contrast, naïvely replacing only the main object token often produces visually ambiguous or stylistically inconsistent images. These results demonstrate that combining automatic prompt extraction from images with evolutionary optimization provides a concrete example of style–preserving prompt design for game item image generation.

목차

ABSTRACT
1. Introduction
2. Related Works
2.1 Game Images and Stylistic Consistency
2.2 Text-to-Image Generation and Image-Based Prompt Extraction
2.3 Automatic Prompt Optimization and Evolution-Based Search
3. Proposed System
3.1 Overview
3.2 Image-Based Automatic Prompt Extraction
3.3 Prompt Element List and Genetic Algorithm
3.4 Style Template and Object Replacement
4. Experiments and Results
4.1 Experimental Setup
4.2 Reference Image Reproduction Results
4.3 Object Replacement Results
5. Conclusion and Future Work
Acknowledgement
References

키워드

저자

• HyungJin Song [ 송형진 | Department of Computer Engineering, Hongik University ]
• Jun Park [ 박준 | Department of Computer Engineering, Hongik University ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  컴퓨터게임및콘텐츠논문지(구 한국컴퓨터게임학회논문지) [Journal of Computer Games and Contents]

• 간기

  월간

• pISSN

  3091-7409

• eISSN

  3092-3638

• 수록기간

  2002~2026

• 등재여부

  KCI 등재

• 십진분류

  KDC 691 DDC 793