In computer graphics, compositing defines as a technique for merging multiple visual elements to generate a single image. The basic principle of compositing is the separation of visual elements, which can be expected to generate new images by merging visual elements from different scenes. On the other hand, merging separated visual elements may lead to lose visual coherence.

Global illumination (GI) effect is one of the most important factors to enhance photo-realism. GI effect refers to the illumination effect caused by inter-reflection, scattering, refraction, and so on, and it strongly affects visual coherence. Since GI effect is caused by the interaction between the visual elements, it is generally known to be difficult to reproduce it while compositing.

The purpose of this theme is that to reproduce GI effect in digital image compositing. And, we expect that the technique will be applied to high-presence video/AR (Augmented Reality) content.


NameAffiliationWeb site
Masaru OhkawaraKeio University



International journal

  1. Masaru Ohkawara, Issei Fujishiro: “Illumination-aware group portrait compositor,” The Visual Computer, Vol. 38, No. 12, pp. 40094018, December 2022 (online first: May 20, 2022). [doi: 10.1007/s00371-022-02508-z]

Conference proceeding

International conference proceeding

  1. Masaru Ohkawara, Issei Fujishiro: “Illumination-aware digital image compositing for full-length human figures,” in Proceedings of the 2021 International Conference on Cyberworlds, pp. 17—24, 2021 [doi: 10.1109/CW52790.2021.00011].
  2. Masaru Ohkawara, Issei Fujishiro, “Realizing pseudo color bleeding with a deep composite image (poster)”, in Proceedings of the 2019 International Conference on Cyberworlds, pp. 382—383, 2019 [doi: 10.1109/CW.2019.00072].


Domestic symposium

  1. 大河原 将藤代 一成:「大域照明を考慮した人物全身のディジタル画像コンポジット」,Visual Computing 2020(オンライン開催),2020年12月 企業賞(サイバーエージェント賞)


Domestic presentation

  1. 大河原 将藤代 一成:「遠隔社会におけるグラフィックスパラダイム」,FIT2022,CI-001,2022年9月


  1. 藤代 一成石飛 晶啓大河原 将:「フォトリアルなサイバー空間構築を支えるCG技術」,KEIO TECHNO-MALL 2020(第21回慶應科学技術展),No. 51,オンライン開催,2020年12月18日


  1. Grant-in-Aid for Scientific Research (A): 21H04916 (2021)
  2. Grant-in-Aid for Challenging Research (Pioneering): 20K20481 (2020)
  3. Grant-in-Aid for Challenging Research (Pioneering): 19H05576 (2019)

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