Zobrazeno 1 - 10
of 289
pro vyhledávání: '"Shoji Tominaga"'
Spectral Reflectance Estimation from Camera Response Using Local Optimal Dataset and Neural Networks
Autor:
Shoji Tominaga, Hideaki Sakai
Publikováno v:
Journal of Imaging, Vol 10, Iss 9, p 222 (2024)
In this study, a novel method is proposed to estimate surface-spectral reflectance from camera responses that combine model-based and training-based approaches. An imaging system is modeled using the spectral sensitivity functions of an RGB camera, s
Externí odkaz:
https://doaj.org/article/350abb8079224f07b547b1b89b0edefa
Autor:
Shoji Tominaga, Takahiko Horiuchi
Publikováno v:
Journal of Imaging, Vol 10, Iss 4, p 92 (2024)
This study considers a method for reconstructing a high dynamic range (HDR) original image from a single saturated low dynamic range (LDR) image of metallic objects. A deep neural network approach was adopted for the direct mapping of an 8-bit LDR im
Externí odkaz:
https://doaj.org/article/60e1c428de1044899bcafbfc41e9ad6a
Autor:
Shoji Tominaga, Hideaki Sakai
Publikováno v:
Journal of Imaging, Vol 9, Iss 2, p 47 (2023)
A novel method is proposed to estimate surface-spectral reflectance from camera responses using a local optimal reflectance dataset. We adopt a multispectral imaging system that involves an RGB camera capturing multiple images under multiple light so
Externí odkaz:
https://doaj.org/article/2b1231d64d524e45be8b76890f365a9e
Publikováno v:
Sensors, Vol 21, Iss 15, p 4985 (2021)
Mobile phone cameras are often significantly more useful than professional digital single-lens reflex (DSLR) cameras. Knowledge of the camera spectral sensitivity function is important in many fields that make use of images. In this study, methods fo
Externí odkaz:
https://doaj.org/article/905e3961e3d54564b47f4dec3e5fdca1
Publikováno v:
Journal of Imaging, Vol 4, Iss 11, p 136 (2018)
Materials with a complex visual appearance, like goniochromatic or non-diffuse, are widely used for the packaging industry. Measuring optical properties of such materials requires a bidirectional approach, and therefore, it is difficult and time cons
Externí odkaz:
https://doaj.org/article/f327f63eb8ae46658e7ca2fda329b957
Autor:
Takahiko Horiuchi, Shoji Tominaga
Publikováno v:
EURASIP Journal on Image and Video Processing, Vol 2010 (2010)
Externí odkaz:
https://doaj.org/article/62304741e8ca4d65a7bba9390b3bac11
Publikováno v:
EURASIP Journal on Image and Video Processing, Vol 2008 (2008)
Externí odkaz:
https://doaj.org/article/90dad55c8e5c4e5b9df9e7b54809eee6
Autor:
Shoji Tominaga, Takahiko Horiuchi
Publikováno v:
EURASIP Journal on Image and Video Processing, Vol 2008 (2008)
This paper proposes a new color image coding scheme called “colorization image coding.†The scheme is based on the colorization technique which can colorize a monochrome image by giving a small number of color pixels. We develop
Externí odkaz:
https://doaj.org/article/e280892f4e994ec8a11716e38fe76752
Publikováno v:
Color and Imaging Conference. 30:141-146
Autor:
Shoji Tominaga, Roseline Kim Fong Yong
Publikováno v:
Color Research & Application. 47:1313-1329
We propose an approach for estimating and reconstructing the material appearance of objects based on the spectral image data acquired in complex illumination environments with multiple light sources. The object appearance can be constructed with vari