System and method for a six-primary wide gamut color system
Inventors
Assignees
Publication Number
US-11798453-B2
Publication Date
2023-10-24
Expiration Date
2039-10-21
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Abstract
Systems and methods for a six-primary color system for display. A six-primary color system increases the number of primary colors available in a color system and color system equipment. Increasing the number of primary colors reduces metameric errors from viewer to viewer. The six-primary color system includes Red, Green, Blue, Cyan, Yellow, and Magenta primaries. The systems of the present invention maintain compatibility with existing color systems and equipment and provide systems for backwards compatibility with older color systems.
Core Innovation
The invention provides a system and method for a six-primary color system for display and acquisition, expanding traditional color imaging from three color primaries (RGB) to six primaries: Red, Green, Blue, Cyan, Yellow, and Magenta (RGBCYM). The system includes both a display and a camera imaging system capable of providing and acquiring image data based on these six primary colors. As described, the camera imager system uses a combination of sensors, prisms, and filters configured specifically for the six primaries, each primary having a dedicated imager and corresponding trim filters.
A central problem addressed is that current display and imaging technologies, which increase color gamut by moving existing RGB primaries further apart, introduce metameric errors and inefficiencies, causing viewers to perceive colors differently and increasing system costs. The proposed solution introduces additional color primaries and wide spectrum primaries to reduce metameric errors and provide a more consistent color sensation across different viewers.
The six-primary system is implemented by a camera comprising a plurality of sensors, glass prisms, at least one beam splitter cross prism, and sets of trim filters dedicated to the six color primaries. The system is operable to capture and distribute camera signal data for each of the R, G, B, C, M, and Y primaries, resulting in a set of image data including all six color values. The design specifies arrangements for components such as dichroic filters, trim filters, and the use of bandpass, rejection, and placement strategies to handle all six color channels.
Claims Coverage
There are three independent claims in the patent, each defining the core inventive aspects of a camera imager system configured for a six-primary color system.
Camera imager system with six color primary sensors and dedicated trim filters
The inventive system comprises a camera imager system with: - A plurality of sensors, each configured for a distinct color primary: Red (R), Green (G), Blue (B), Cyan (C), Yellow (Y), and Magenta (M). - At least one glass prism and at least one filter, wherein the filter set includes trim filters for each color primary (R trim, G trim, B trim, C trim, M trim, Y trim). - The system is operable to capture camera signal data, distribute this data to the sensors, and generate image data containing the R, G, B, C, M, and Y primary color values.
Camera imager system using multiple glass prisms arranged into flats for six-primary capture
The system comprises a camera imager system including: - A plurality of sensors and a plurality of glass prisms arranged into at least three flats. - Sensors dedicated to Red, Green, Blue, Cyan, Yellow, and Magenta. - At least one filter set with respective trim filters for each primary color (R, G, B, C, M, Y). - The system distributes captured camera signal data to sensors via the prisms, resulting in image data that contains all six primary color values.
Camera imager system incorporating a beam splitter cross prism with six color primary sensors
This claim describes: - A camera imager system with a plurality of sensors, a plurality of glass prisms, a beam splitter cross prism, at least one filter, and at least one lens. - The inclusion of distinct sensors and trim filters for R, G, B, C, M, and Y color channels. - The beam splitter cross prism is used to divide and distribute incoming camera signal data to the multiple sensors/prisms, capturing and outputting image data that includes all six primary colors.
The inventive features claimed encompass camera imager systems specifically constructed to acquire image data from six distinct color primaries using dedicated sensors, prisms, and trim filters arranged to ensure accurate and separated capture and distribution of RGBCYM color information.
Stated Advantages
Extends current color gamuts to a wider usable color gamut than currently offered in existing systems.
Minimizes metameric errors (i.e., ensures different viewers see the same color) by using six wide spectrum primaries instead of three narrow-band primaries.
Provides a more consistent color sensation across different viewers.
Enables backwards compatibility with existing color systems and equipment.
Documented Applications
Use in camera imaging systems for acquisition of multi-primary (six color) image data suitable for further processing or display in six-primary color systems.
Integration into professional and consumer cameras for improved color capture with reduced metameric error.
Applications in display systems, enabling six-primary color output for improved color accuracy and viewer consistency.
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