講演抄録/キーワード |
講演名 |
2011-03-11 10:40
線画の好ましい調子再現 ○耿 競・青木直和・小林裕幸(千葉大) |
抄録 |
(和) |
写真同様、絵画にも好ましい調子再現曲線があると思われる。本研究は、明暗表現が写真とは異なる面積変調であり、また調子も連続的に変化するのではなく、階段状で変化する線画について、その好ましい調子再現曲線を調べ、写真と比較した。線画は写真の明度域をある幅で分割し、それぞれに同じレベルの明度をもつ、前もって作成したトーンパッチを適用することで作成した。その結果、好ましい調子再現曲線が線画と写真では異なること、また絵柄によっても異なることがわかった。 |
(英) |
We believe that there is a preferred tone reproduction for each painting or drawing similarly to a photograph. In the present paper, a preferred tone reproduction for line drawing was investigated and it was compared with that for the photograph. Lightness of line drawing is controlled by area modulation and its tone is discrete differently from photograph. Line drawings were prepared from photographs, contour was obtained by using the high-pass filter after smoothing through the bilateral filter, and then the continuous tone of photograph was divided into equilightness regions with 7-8 lightness unit interval. To each region a tone patch of diagonal stroke with the same lightness as it was applied. The results of subjective evaluation showed that the preferred tone reproduction is different between line drawing and photograph and also between portrait and landscape picture. |
キーワード |
(和) |
線画 / 写真 / 調子再現 / 好ましさ / / / / |
(英) |
line drawing / photograph / tone reproduction / preference / / / / |
文献情報 |
映情学技報, vol. 35, no. 14, AIT2011-18, pp. 21-24, 2011年3月. |
資料番号 |
AIT2011-18 |
発行日 |
2011-03-04 (AIT) |
ISSN |
Print edition: ISSN 1342-6893 |
PDFダウンロード |
|