Image Categorization using Color Blobs in a Mobile Environment. - David Gavilan Ruiz; Hiroki Takahashi; Masayuki Nakajima 001 (Comput. Graph. Forum, 2003)

Sketch-based perception model for evaluating color segmentations. - David Gavilan Ruiz; Hiroki Takahashi; Suguru Saito; Masayuki Nakajima 001 (APGV, 2005)

Sketch-to-collage. - David Gavilan Ruiz; Suguru Saito; Masayuki Nakajima 001 (SIGGRAPH Posters, 2007)

Sketch-Based Evaluation of Image Segmentation Methods. - David Gavilan Ruiz; Hiroki Takahashi; Suguru Saito; Masayuki Nakajima 001 (IEICE Trans. Inf. Syst., 2007)

Query-by-Sketch Based Image Synthesis. - David Gavilan Ruiz; Suguru Saito; Masayuki Nakajima 001 (IEICE Trans. Inf. Syst., 2008)