System and method for displaying super saturated color
Inventors
Bogdanowicz, Mitchell J. • DeFilippis, James M. • Mandle, Gary B. • Carbonara, Corey P. • Korpi, Michael F.
Assignees
Publication Number
US-11501419-B1
Publication Date
2022-11-15
Expiration Date
2042-05-19
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Abstract
Systems and methods for displaying super saturated color. Image data for display on a display or viewing device with a potential white luminance in a standard system with a maximum luminance is processed such that colors near the white point are reduced to a limited luminance. As the chroma of the displayed color is increased, a luminance attenuation is decreased. The scaling of the reduction is operable to be a linear function, a non-linear function, or any other function.
Core Innovation
The invention provides systems and methods for displaying super saturated color in primary color systems by processing image data such that colors close to a white point are reduced to a limited luminance, which is lower than the maximum luminance value of the display device. As the chroma (color saturation) of the displayed color increases, the degree of luminance attenuation decreases. This scaling of luminance reduction can be linear, non-linear, or use any other functional relationship between chroma and luminance.
The image data converter in the system encodes and decodes sets of primary color signals in a color space comprising two colorimetric coordinates and a luminance value. During this process, the luminance associated with a color is limited based on its colorimetric coordinates so that highly saturated colors retain higher luminance relative to neutral tones or white, enabling the display of colors beyond conventional limitations imposed by the white point of the display.
The background section highlights the problem that, despite advances in color gamut and brightness, current display technologies are constrained by white point definitions and require complex, proprietary systems. Existing systems don't allow additional color primary information outside the display or support workflows generating such information, limiting the ability to fully utilize multi-primary systems or display true super saturated colors. The present invention addresses these limitations by separating the processing of chroma and luminance, enabling more flexible color rendering across a wide range of display technologies.
Claims Coverage
The patent includes three independent claims, each outlining a distinct inventive feature for displaying super saturated colors using advanced color and luminance processing.
System for displaying colors with limited luminance dependent on colorimetric chroma
A system comprising: - Image data including primary color signals represented as values in a color space with two colorimetric coordinates and a luminance. - An image data converter with a digital interface to encode and decode these values. - At least one viewing device in network communication with the image data converter. - The encoded/decoded data includes limited luminance and the two colorimetric coordinates, where the limited luminance is lower than the display's maximum, and its value depends on the chroma derived from the colorimetric coordinates, increasing as the chroma distance from a neutral or white point increases. - The image data converter processes the image data to display it accordingly on the viewing device.
System for displaying colors with session description protocol (SDP) parameters and luminance-chroma dependency
A system comprising: - Image data with primary color signals in a color space of two colorimetric coordinates and a luminance. - An image data converter having a digital interface to encode and decode the values. - A set of Session Description Protocol (SDP) parameters. - At least one viewing device in network communication with the converter. - The encoded/decoded data includes a limited luminance (lower than device maximum), and two colorimetric coordinates, with limited luminance dependent on chroma distance from a neutral or white point. - The processed data is related to the limited luminance and colorimetric coordinates. - The converter processes the image data for display on the viewing device.
Method for displaying colors with luminance attenuation based on colorimetric chroma
A method comprising: 1. Providing image data with primary color signals corresponding to values in a color space with two colorimetric coordinates and luminance. 2. Encoding the image data using a digital interface of an image data converter in network communication with at least one viewing device. 3. Processing image data by lowering luminance below the maximum device value to create limited luminance. 4. Decoding the image data using the interface. 5. The converter converts the image data for display. Throughout these steps, the encoded/decoded data includes limited luminance and two colorimetric coordinates, with limited luminance dependent on chroma and increasing as chroma distance from a neutral or white point rises.
These inventive features collectively protect systems and methods for processing and displaying image data, where luminance is limited and modulated based on color saturation, enabling the display of super saturated colors beyond conventional white point luminance constraints.
Stated Advantages
Allows color primaries to exceed traditional white point limitations, enabling the display of super saturated and fluorescent-like colors.
Enables higher achievable luminance for highly saturated colors relative to neutral tones, enhancing visual impact and clarity.
Provides flexibility by allowing the scaling of luminance reduction to be linear, non-linear, or custom, adapting to different application needs.
Is compatible with both RGB and multi-primary color systems, including systems with more than three primaries.
Supports backward compatibility and integration into existing display and transmission infrastructures.
Facilitates more accurate and distinct visual representations for applications such as gaming, augmented/virtual reality, and heads-up displays.
Documented Applications
Providing displays and heads-up displays with super saturated colors to enhance clarity and visual distinction.
Enabling additional clarity and bold separation of visual elements in car navigation, augmented reality (AR), virtual reality (VR), sports, and gaming applications.
Facilitating neon-like visual effects for friends or foes indicators in gaming, including first-person shooter games and overlays in AR/VR.
Increasing distinction and perceived brightness in projection-based and wearable displays, including AR/VR headsets for simulations, live training, and vehicle operation.
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