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Modeling Color Appearance in Augmented Reality

2019 Augmented reality
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Release : 2019
Genre : Augmented reality
Kind : eBook
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Book Synopsis Modeling Color Appearance in Augmented Reality by : Nargess Hassani

Download or read book Modeling Color Appearance in Augmented Reality written by Nargess Hassani. This book was released on 2019. Available in PDF, EPUB and Kindle. Book excerpt: "Augmented reality (AR) is a developing technology that is expected to become the next interface between humans and computers. One of the most common designs of AR devices is the optical see-through head- mounted display (HMD). In this design, the virtual content presented on the displays embedded inside the device gets optically superimposed on the real world which results in the virtual content being transparent. Color appearance in see-through designs of AR is a complicated subject, because it depends on many factors including the ambient light, the color appearance of the virtual content and color appearance of the real background. Similar to display technology, it is vital to control the color appearance of content for many applications of AR. In this research, color appearance in the see-through design of augmented reality environment is studied and modeled. Using a bench-top optical mixing apparatus as an AR simulator, objective measurements of mixed colors in AR were performed to study the light behavior in AR environment. Psychophysical color matching experiments were performed to understand color perception in AR. These experiments were performed first for simple 2D stimuli with single color both as background and foreground and later for more visually complex stimuli to better represent real content that is presented in AR. Color perception in AR environment was compared to color perception on a display which showed they are different from each other. The applicability of the CAM16 color appearance model, one of the most comprehensive current color appearance models, in AR environment was evaluated. The results showed that the CAM16 is not accurate in predicting the color appearance in AR environment. In order to model color appearance in AR environment, four approaches were developed using modifications in tristimulus and color appearance spaces, and the best performance was found to be for Approach 2 which was based on predicting the tristimulus values of the mixed content from the background and foreground color."--Abstract.

Color Appearance Models

2005-07-08 Technology & Engineering
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Release : 2005-07-08
Genre : Technology & Engineering
Kind : eBook
Book Rating : 692/5 ( reviews)

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Book Synopsis Color Appearance Models by : Mark D. Fairchild

Download or read book Color Appearance Models written by Mark D. Fairchild. This book was released on 2005-07-08. Available in PDF, EPUB and Kindle. Book excerpt: There is an ever-increasing demand for a standard way to transport colours among devices on the Internet, and for achieving colour fidelity across digital media. The rapid growth in colour imaging technology has led to the emergence of colour management systems. These systems require colour appearance models so that images produced in one medium and viewed in a particular environment, may be reproduced in a second medium and viewed under different conditions. The eagerly anticipated second edition of Colour Appearance Models brings the fundamental issues and current solutions in the area of colour appearance modelling together in a single place for those needing to solve practical problems or looking for background for ongoing research projects. This book provides the relevant information for an updated review of colour appearance and provide details of many of the most widely used models to date, for example, Nayatani et al., Hunt, and RLAB and the ATD and LLAB appearance models that are of increasing interest for some applications. It also includes the recently formulated CIECAM02 model that represents a significant improvement of CIECAM97S and is the best possible model based on current knowledge. Fairchild presents an updated overview of device-independent colour imaging and finally introduces the concept of image appearance modelling as a potential future direction for colour appearance modelling research. A website accompanies this text that lists developments, publications and calculations related to the material in this book.

Color Appearance Model

2024-04-29 Computers
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Release : 2024-04-29
Genre : Computers
Kind : eBook
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Book Synopsis Color Appearance Model by : Fouad Sabry

Download or read book Color Appearance Model written by Fouad Sabry. This book was released on 2024-04-29. Available in PDF, EPUB and Kindle. Book excerpt: What is Color Appearance Model A color appearance model, often known as a CAM, is a mathematical model that aims to capture the perceptual elements of human color vision. This model is used to describe viewing settings in which the appearance of a color does not coincide with the corresponding actual measurement of the stimulus source. How you will benefit (I) Insights, and validations about the following topics: Chapter 1: Color appearance model Chapter 2: CIELAB color space Chapter 3: Colorimetry Chapter 4: Chromatic adaptation Chapter 5: CIECAM02 Chapter 6: Color space Chapter 7: RGB color spaces Chapter 8: Colorfulness Chapter 9: CIE 1931 color space Chapter 10: LMS color space (II) Answering the public top questions about color appearance model. (III) Real world examples for the usage of color appearance model in many fields. Who this book is for Professionals, undergraduate and graduate students, enthusiasts, hobbyists, and those who want to go beyond basic knowledge or information for any kind of Color Appearance Model.

Fundamentals and Applications of Colour Engineering

2023-10-16 Technology & Engineering
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Release : 2023-10-16
Genre : Technology & Engineering
Kind : eBook
Book Rating : 183/5 ( reviews)

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Book Synopsis Fundamentals and Applications of Colour Engineering by : Phil Green

Download or read book Fundamentals and Applications of Colour Engineering written by Phil Green. This book was released on 2023-10-16. Available in PDF, EPUB and Kindle. Book excerpt: Expert overview of the world of colour engineering in the 21st century, with new, updated technologies and a MATLAB toolbox Fundamentals and Applications of Colour Engineering provides important coverage on topics that hold the power to extend our knowledge of color reproduction, such as color measurement and appearance and the methods used, with additional discussion of the technologies responsible for reproducing color across a wide range of devices, together with the color management systems that are used to connect devices together and exchange information. Composed of 20 chapters, the editor and his team of expert contributors consider the new ICC.2 architecture, an approach that introduces an evolutionary step in colour engineering, ensuring wider possibilities for technology. The text also considers the emerging applications for advanced color management, such as processing spectral data, handling HDR images, and the capture and reproduction of material appearance. The text is supported by a MATLAB toolbox of relevant functions and data. Fundamentals and Applications of Colour Engineering is a useful reference for anyone involved in the reproduction of colour and a strong supplementary course potential for Masters degrees with a colour science component. Fundamentals and Applications of Colour Engineering includes information on: Instruments and methods of color measurement, colorimetry, and color difference, and colour appearance Colour spaces and color encodings, and characterizing input devices, displays and printers Colour gamut communication and imaging standards, high dynamic range imaging, and HDR Sensor adjustment in color management, open source tools for color engineering, and colour transform evaluation Supporting active learning with the inclusion of a toolbox of relevant functions and data, Fundamentals and Applications of Colour Engineering is an essential resource for students in relevant programs of study, and for professionals within colour engineering and reproduction looking to maximize their skill set and keep their skills updated.

Color-appearance Modeling for Cross-media Image Reproduction

1996 Color printing
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Release : 1996
Genre : Color printing
Kind : eBook
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Book Synopsis Color-appearance Modeling for Cross-media Image Reproduction by : Karen M. Braun

Download or read book Color-appearance Modeling for Cross-media Image Reproduction written by Karen M. Braun. This book was released on 1996. Available in PDF, EPUB and Kindle. Book excerpt: "Five color-appearance transforms were tested under a variety of conditions to determine which is best for producing CRT reproductions of original printed images. The transforms included: von Kries chromatic adaptation, CIELAB color space, RLAB color appearance model, Hunt's color appearance model, and Nayatani's color appearance model. It was found that RLAB produced the best matches for changes in white point, luminance level, and background changes, but did not accurately predict the effect of surround. The ability of CIELAB color space was equal to that of RLAB in many cases, and performed better for changes in surround. Expert observers generated CRT images in one viewing condition that they perceived to match an original image viewed in another condition. This technique produced images that were equal to or better than the best color appearance model tested and is a useful technique to generate color appearance data for developing new models and testing existing models."--Abstract.

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