Results 181 to 190 of about 2,974,739 (223)

Enhanced Color-to-Gray Conversion

Journal of Graphics Tools, 2008
Important visual details are lost when a color image is converted into a luminance image using GIMP, Adobe Photoshop, or other graphic tools (see Figure 1). An enhanced conversion method is presented that creates an optimized grayscale image with visual artifacts of the standard method reduced to a minimum.
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Conversion of color documents to grayscale

21st Mediterranean Conference on Control and Automation, 2013
In this paper, a novel method to convert color documents to grayscale is proposed. This approach takes as criteria that a suitable form of a grayscale document must have locally uniform background, well separated characters from the background and reduced noise.
Iliana Papamarkou, Nikos Papamarkos
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Ten micrometer pixel, quantum dots color conversion layer for high resolution and full color active matrix micro‐LED display

Journal of the Society for Information Display, 2019
A fine patternable quantum dots (QDs) color conversion layer (CCL) for high resolution and full color active matrix (AM) micro‐LED (μ‐LED) display is demonstrated. QDs CCL could be patterned until 10 μm using photolithography process.
Hyo‐Min Kim, M. Ryu, James H.J. Cha, Hyun Soo Kim, Tak Jeong, J. Jang   +5 more
semanticscholar   +1 more source

Color Conversion Materials for High‐Brightness Laser‐Driven Solid‐State Lighting

Laser & Photonics reviews, 2018
Solid‐state lighting is advancing toward higher power, higher brightness, and smaller size to cope with the market competitiveness, and laser‐driven solid‐state lighting technology is springing up owing to its super‐high brightness and compactness. These
Shuxing Li, Le Wang, N. Hirosaki, R. Xie
semanticscholar   +1 more source

A Study on Color Conversion for Color Deficient People to Identify Color

2009
The sensitivity of the M-cones and L-cones of an anomalous trichromat is lower than that of normal trichromats. By intensifying the light to the cones with lower sensitivity, the output ratio from the cone approached the level of a normal trichromat, and it was presumed that achieving close to original color recognition was a possibility.
Makoto Oka, Naoki Ozawa, Hirohiko Mori, Akito Sakurai   +3 more
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Radial basis functions for color conversion

2008
The most difficult and challenging task in color printing is to reduce costs while maintaining superior quality. This dissertation proposes significant enhancements to printer color conversion techniques including accurate nonlinear models that incorporate perceptual color difference metrics, lossless gray component replacement (GCR) transformations ...
Qiao, Yue, Kirby, Michael
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Fast Algorithm for HDR Color Conversion

2016 Data Compression Conference (DCC), 2016
The paper addresses a problem of perceptual artifacts that appear in Y'CbCr non-linear luminance 4:2:0 HDR video. A computationally inexpensive method is proposed for converting the 4:4:4 HDR video to Y'CbCr 4:2:0 nonconstant luminance format. The method removes artifacts in areas with saturated colors.
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Color notation conversion by neural networks

Color Research & Application, 1993
AbstractThis article describes a new method for color‐notation conversion between the Munsell and CIE color systems by means of neural networks. A multilayer feedforward network is regarded as a nonlinear transformer which is trained to learn a mapping between the two color spaces. We adopt the backpropagation learning rule for the training.
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Color Conversion of Television Studio Facilities

Journal of the SMPTE, 1967
An overall plan for color conversion of the basic television services of the Canadian Broadcasting Corp. was developed in 1959. In 1964 it was decided to equip for color the International Broadcasting Centre which CBC was then building for Expo 67. Increased public interest in color brought about a decision to start color broadcasting in Canada in ...
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Color Image Processing Techniques for Effective Color Enhancement Color Space Conversion and Color Constancy

This chapter provides an in-depth exploration of color image processing techniques, with a focus on color enhancement, color space conversion, and color constancy. The significance of color representation in digital devices and its impact on visual perception was emphasized.
K Srinivasa Rao, Jonnadula Narasimharao
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