Color Breakup Suppression by Local Primary Desaturation in Field-Sequential Color LCDs

Lin, Fang-Cheng; Zhang, Yuning; Langendijk, Erno H. A.

doi:10.1109/jdt.2010.2090493

Cited by 26 publications

(36 citation statements)

References 22 publications

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“…To generate several different levels of color breakup visibility for each reference image, the primary desaturation (PD) method was applied to replace the original primary colors [red (R), green (G), and blue (B)] with new desaturated “primary” colors that can cover only the color gamut of an image. The PD method suppresses the color breakup by desaturating the driving fields.…”

Section: Methodsmentioning

confidence: 99%

“…In Fig. (a), three driving fields of pure R, G, and B (F1 to F3) were simply derived from the reference image that has a full sRGB color gamut, and the color breakup phenomenon was conceptually simulated . In Fig.…”

Section: Methodsmentioning

confidence: 99%

“…However, the relative velocity between the displayed images and an observer's eyes, which may be induced by saccadic eye movements or a smooth pursuit of a moving object, causes the sequentially produced primary color fields to imperfectly overlap on the retina. Therefore, FSC displays suffer from an important drawback: color breakup . Figure (c) illustrates the basic mechanism of color breakup and a representation of a distorted retinal image containing the color breakup, which appears as rainbow‐like fringes that disturb an observer's viewing.…”

Section: Introductionmentioning

confidence: 99%

“…As color breakup degrades image quality, causes discomfort to observers, and consequently impairs the application of FSC displays, a number of studies have been dedicated to this field, which can be roughly grouped into two research lines. The first line of research seeks approaches that can suppress the color breakup.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Image content adaptive color breakup index for field sequential color displays using a dominant visual saliency method

Qin

Lin

et al. 2018

J Soc Info Display

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An index that can predict the perceptual visibility of color breakup for varying image content is valuable in field sequential color displays, whereas the current indices are usually for fixed patterns. To solve this problem, an image database containing 25 diverse reference images and 125 test cases with various color breakup visibility was first established. Next, visual experiments using a 240‐Hz liquid crystal display were performed to acquire the subjective color breakup scores of the test cases. A theorem based on visual saliency theory was proposed that the color breakup perception is mainly determined by the image regions with visual saliency values higher than a certain threshold, called the dominant visual saliency regions. A computational model based on this theorem was developed to obtain objective color breakup scores of the test cases from retinal images with and without color breakup. An analysis of the objective and subjective results revealed a Pearson linear correlation coefficient as high as 0.82, which matches the top‐level image quality assessment algorithms. Finally, the proposed color breakup index was used to benchmark against several mainstream field sequential color algorithms to determine their performances in color breakup suppression.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Image content adaptive color breakup index for field sequential color displays using a dominant visual saliency method

Qin

Lin

et al. 2018

J Soc Info Display

Self Cite

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“…Alternatively, the 240 and 180 Hz Stencil-FSC method [12]- [16] gathers the most luminance in a multi-color field and reduces the luminance of the residual fieldimage to successfully suppress color breakup. The local primary desaturation (LPD) method proposed by Phillips [17][18] also provides less but sufficient saturated primary backlight signals to reduce the color difference between each of the two fields to effectively prevent color breakup. Before a rapid response liquid crystal, such as blue-phase [19] [20], is developed for commercialization, a low-field-rate FSC-LCD should be developed.…”

Section: Introductionmentioning

confidence: 99%

High-Image Reproduction by the Low-Field-Rate Stencil-LPD Method for Field-Sequential-Color LCDs

Lin

Chang

Huang

et al. 2015

J. Display Technol.

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Color breakup is a lethal issue to conventional fieldsequential-color LCDs. Several methods have been proposed to solve this problem. However, these solutions are either more than 180 Hz-the currently used LC mode is not sufficiently fast for this field rate-or they degrade the image quality while using a field rate of 120 Hz. To overcome these limitations, a 120 Hz Stencil Local Primary Desaturation, Stencil-LPD, is presented in this work. The 120 Hz Stencil-LPD method provides reduced but sufficient saturated backlight color to precisely present an image with less color distortion or color breakup. After optimizing a number of backlight segments, the experimental results demonstrate that the image fidelity is significantly improved and color breakup is greatly suppressed compared to the existing methods.

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Color breakup visibility thresholds for 2‐field sequential colors

Wang

Zhang

et al. 2017

Color Research & Application

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Nowadays local primary desaturation has been proved to be an effective method to suppress the color breakup for field‐sequential‐color (FSC) displays. However, little attention has been focused on the interaction between various subfield colors and the color breakup visibility. In this article, a perception experiment was conducted with the help of a 120 Hz 2‐field FSC display to investigate the thresholds of color breakup visibility along different hue directions with a constant white point in the standard color space. The experimental results show that the color breakup visibility is various when using different subfield colors for temporal combination. A relative high threshold value or low sensitivity of color breakup visibility can be observed when subfield colors are chosen along the blue‐yellow direction while becoming perceptible easily along magenta‐cyan direction. The results and analysis of our experiments are promising to optimize the performance of local primary desaturation. Meanwhile, other applications using the temporal color fusion such as tunable lighting can also benefit from the conclusion of our work to suppress the color breakup effect.

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Color Breakup Suppression by Local Primary Desaturation in Field-Sequential Color LCDs

Cited by 26 publications

References 22 publications

Image content adaptive color breakup index for field sequential color displays using a dominant visual saliency method

Image content adaptive color breakup index for field sequential color displays using a dominant visual saliency method

High-Image Reproduction by the Low-Field-Rate Stencil-LPD Method for Field-Sequential-Color LCDs

Color breakup visibility thresholds for 2‐field sequential colors

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