A Simple Method to Measure MTF of Paper and Its Application for Dot Gain Analysis
スポンサーリンク
概要
- 論文の詳細を見る
Image quality of halftone print is significantly influenced by optical characteristics of paper. Light scattering in paper produces optical dot gain, which has a significant influence on the tone and color reproductions of halftone print. The light scattering can be quantified by the Modulation Transfer Function (MTF) of paper. Several methods have been proposed to measure the MTF of paper. However, these methods have problems in efficiency or accuracy in the measurement. In this article, a new method is proposed to measure the MTF of paper efficiently and accurately, and the dot gain effect on halftone print is analyzed. The MTF is calculated from the ratio in spatial frequency domain between the responses of incident pencil light to paper and the perfect specular reflector. Since the spatial frequency characteristic of input pencil light can be obtained from the response of perfect specular reflector, it does not need to produce the input illuminant having “ideal” impulse characteristic. Our method is experimentally efficient since only two images need to be measured. Besides it can measure accurately since the data can be approximated by the conventional MTF model. Next, we predict the reflectance distribution of halftone print using the measured MTF in microscopy in order to analyze the dot gain effect since it can clearly be observed in halftone micro-structure. Finally, a simulation is carried out to remove the light scattering effect from the predicted image. Since the simulated image is not affected by the optical dot gain, it can be applied to analyze the real dot coverage.
- 2009-12-01
著者
-
Parkkinen Jussi
Department of Computer Science and Statistics, University of Joensuu
-
NAKAGUCHI Toshiya
Graduate School of Advanced Integration Science, Chiba University
-
TSUMURA Norimichi
Graduate School of Advanced Integration Science, Chiba University
-
MIYAKE Yoichi
Research Center for Frontier Medical Engineering, Chiba University
-
Miyake Yoichi
Research Center For Frontier Medical Engineering Chiba University
-
KANEKO Hitomi
Department of Hematology, Osaka Red Cross Hospital
-
Parkkinen Jussi
Department Of Computer Science And Statistics University Of Joensuu
-
Nakaguchi Toshiya
Graduate School Of Advanced Integration Science Chiba University
-
Nakaguchi Toshiya
The Department Of Electrical And Electronics Engineering Sophia University
-
Tsumura Norimichi
Graduate School Of Advanced Integration Science Chiba University
-
Kaneko Hitomi
Department Of Information And Image Science Chiba University
-
Kaneko Hitomi
Department Of Hematology Osaka Red Cross Hospital
-
UKISHIMA Masayuki
Graduate School of Advanced Integration Science, Chiba University
-
HAUTA KASARI
Department of Computer Science and Statistics, University of Joensuu
-
Tsumura N
Graduate School Of Advanced Integration Science Chiba University
-
Hauta Kasari
Department Of Computer Science And Statistics University Of Joensuu
-
Ukishima Masayuki
Graduate School Of Advanced Integration Science Chiba University
-
Nakaguchi Toshiya
Chiba Univ. Chiba Jpn
関連論文
- AS-3-8 印刷画像の分光分布推定と媒体の好ましいMTF解析(AS-3.イメージメディアクオリティの基盤技術,シンポジウムセッション)
- Endoscopy System for Length Measurement by Manual Pointing with an Electromagnetic Tracking Sensor
- Breakthrough Infection of Trichosporon asahii in a Patient with Chronic Lymphocytic Leukemia
- The Interaction of Art, Technology and Customers in Picture Making
- Evaluation of Image Corrected by Retinex Method Based on S-CIELAB and Gazing Information(Image Media Quality)
- Video Quality Assessment Using Spatio-Velocity Contrast Sensitivity Function
- A Simple Method to Measure MTF of Paper and Its Application for Dot Gain Analysis
- Projector-Based Color Simulator for Print Industry(Image Media Quality)
- 特別講演 Color Reproduction of Endoscopes and Development of Spectral Endoscopes
- Texton-Based Super-Resolution for Achieving High Spatiotemporal Resolution in Hybrid Camera System
- A Model Optimization Approach to the Automatic Segmentation of Medical Images
- Adaptive Ambient Illumination Based on Color Harmony Model
- A Fast Block Matching Algorithm Based on Motion Vector Correlation and Integral Projections
- Error Analysis of Length Measurement by Manual Pointing and Magnetic Tracking for Endoscopy(International Forum on Medical Imaging in Asia 2009 (IFMIA 2009))
- Regression-Based Model of Skin Diffuse Reflectance for Skin Color Analysis
- Measurement of Bidirectional Reflectance Distribution Function with a Linear Light Source
- Spectral Based Color Correction Technique Compatible with Standard RGB System
- Noise Analysis of Duplicated Data on Microarrays Using Mixture Distribution Modeling
- Real Time Deformation Model of Liver Based on Structural Mechanics for Medical Training Systems and Its Accuracy Evaluation
- Measuring Light Field of Light Source with High Directional Resolution Using Mirrored Ball and Pinhole Camera
- Fast Estimation Algorithm for Calculation of Reflectance Map based on Wiener Estimation Technique
- Box Puzzling Problem Solver by Hysteresis Neural Networks(Special Section on Nonlinear Theory and its Applications)
- Hysteresis Neural Networks for N-Queens Problems (Special Section on Nonlinear Theory and Its Applications)
- BioEncoding : A Reliable Tokenless Cancelable Biometrics Scheme for Protecting IrisCodes
- Psychological Effects of Ambient Illumination Control and Illumination Layout While Viewing Various Video Images
- Precomputed Compressive Sensing for Light Transport Acquisition
- Principal Component and Sampling Analysis of Color Spectra
- BT-4-3 GENERATING CANCELABLE BIOMETRIC TEMPLATES USING RANDOM ADDRESSING
- Methotrexate-associated lymphoplasmacytic lymphoma complicated with type 2 cryoglobulinemia
- On the Security of BioEncoding Based Cancelable Biometrics
- Background Updating and Shadow Detection Based on Spatial, Color, and Texture Information of Detected Objects
- Background Subtraction Based on Time-Series Clustering and Statistical Modeling
- Multiple Splenic Abscesses in 2 Patients with Myelodysplastic Syndrome
- CMV Quantitative PCR in the Diagnosis of CMV-associated AGML in an Immunocompetent Host
- Optical Path-Length Matrix Method for Estimating Skin Spectrum