Dye Amount Estimation in a Papanicolaou-stained specimen using Multispectral Imaging

2021 ◽  
Vol 2021 (29) ◽  
pp. 179-183
Author(s):  
Saori Takeyama ◽  
Tomoaki Watanabe ◽  
Masahiro Yamaguchi ◽  
Takumi Urata ◽  
Fumikazu Kimura ◽  
...  

Papanicolaou stain is mainly used in cytological diagnosis such as gynecological diseases. In the image analysis of stained histopathology specimens, color unmixing technique, which estimates the dye abundance map, is useful. In this paper, we apply the dye amount estimation method based on color unmixing to Papanicolaou-stained specimen. In the proposed method, we capture the Papanicolaou-stained samples using a multispectral microscope, and then we estimate the amount of dyes from the observation and practically measured the spectral characteristics of the stain. Besides, we construct an application depicting the amount of stain and the bar-graph plot. In the experiments, we verify the feasibility of the proposed method and analyze a precancerous lesion of the uterine cervix using the proposed method.

2011 ◽  
Vol 55 (5) ◽  
pp. 455-459 ◽  
Author(s):  
Ryotaro Jingu ◽  
Masafumi Ohki ◽  
Sumiko Watanabe ◽  
Sadafumi Tamiya ◽  
Setsuo Sugishima ◽  
...  

2020 ◽  
Vol 2020 (28) ◽  
pp. 227-231
Author(s):  
Shoji Tominaga

This paper proposes a compact and reliable method to estimate the bispectral Donaldson matrices of fluorescent objects by using multispectral imaging data. We suppose that an image acquisition system allows multiple illuminant projections to the object surface and multiple response channels in the visible range. The Donaldson matrix is modeled as a twodimensional array with the excitation range (350, 700 nm) and the reflection and emission ranges (400, 700 nm). The observation model is described using the spectral sensitivities of a camera and the spectral functions of reflectance, emission, and excitation. The problem of estimating the spectral functions is formulated as a least squares problem to minimize the residual error of the observations and the roughness of the spectral functions. An iterative algorithm is developed to obtain the optimal estimates of the whole spectral functions. The performance of the proposed method is examined in simulation experiments using multispectral imaging data in detail.


2011 ◽  
Vol 11 (10) ◽  
pp. 2715-2726 ◽  
Author(s):  
T. Lahousse ◽  
K. T. Chang ◽  
Y. H. Lin

Abstract. We developed a multi-scale OBIA (object-based image analysis) landslide detection technique to map shallow landslides in the Baichi watershed, Taiwan, after the 2004 Typhoon Aere event. Our semi-automated detection method selected multiple scales through landslide size statistics analysis for successive classification rounds. The detection performance achieved a modified success rate (MSR) of 86.5% with the training dataset and 86% with the validation dataset. This performance level was due to the multi-scale aspect of our methodology, as the MSR for single scale classification was substantially lower, even after spectral difference segmentation, with a maximum of 74%. Our multi-scale technique was capable of detecting landslides of varying sizes, including very small landslides, up to 95 m2. The method presented certain limitations: the thresholds we established for classification were specific to the study area, to the landslide type in the study area, and to the spectral characteristics of the satellite image. Because updating site-specific and image-specific classification thresholds is easy with OBIA software, our multi-scale technique is expected to be useful for mapping shallow landslides at watershed level.


2013 ◽  
Author(s):  
Izumi Nishidate ◽  
Keiichiro Yoshida ◽  
Chiharu Mizushima ◽  
Satoko Kawauchi ◽  
Shunichi Sato ◽  
...  

2005 ◽  
Vol 33 (2) ◽  
pp. 71-77 ◽  
Author(s):  
Toshiro Yokoyama ◽  
Akihiko Kawahara ◽  
Masayoshi Kage ◽  
Masamichi Kojiro ◽  
Hideki Takayasu ◽  
...  

2015 ◽  
Vol 91 (2) ◽  
pp. 102-107 ◽  
Author(s):  
C García-Vielma ◽  
MI Dávila-Rodríguez ◽  
F Hernández-Garza ◽  
RM Cerda-Flores ◽  
EI Cortés-Gutiérrez

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