Virtual Primaries Transform Controller for Surgical Display Color Matching
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Solution Overview
Problem
Display devices with different technologies, such as liquid crystal display monitors backlit by cold-cathode fluorescent tubes and light emitting diodes, produce varying color representations of surgical site scenes, leading to inconsistencies in color appearance.
Innovation Solution
A virtual primaries transform controller directly maps the color of a pixel from one display technology to an identical color on another display technology by converting real primary colors of the first display to virtual primaries that match the second display, ensuring consistent color representation across different display technologies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different display technologies (CCFL vs LED) are used in surgical monitors, then display device versatility and modernization are improved, but color consistency and accuracy deteriorate
Solution Approach 1:
The patent transforms color data by changing the parameter space from real primary colors to virtual primary colors. This mathematical transformation allows color information to be represented in a way that is independent of the specific display technology, enabling consistent color reproduction across different monitor types (CCFL, LED, etc.) while maintaining surgical scene accuracy
Solution Approach 2:
The patent introduces virtual primary colors as an intermediary representation between the captured surgical scene and the display output. This intermediate color space acts as a mediator that translates color information in a way that preserves accuracy across different display technologies, eliminating the need for separate calibration for each monitor type
2Manufacturing precision
If direct color mapping is performed between different display technologies, then color consistency is improved, but complexity of color transformation increases
Solution Approach 1:
The patent performs preliminary color space transformation by converting captured image data into virtual primary color representation before display output. This preliminary action establishes a standardized color foundation that simplifies subsequent display rendering, as the virtual primary color data can be directly mapped to any display technology without requiring complex pairwise calibration between different monitor types
Data Source
AI summary
A virtual primaries transform controller maps a color of a first pixel in a scene received from an imaging pipeline to a color of a second pixel, which is displayed on a monitor. The first color and the second color are the same color. The direct mapping performed by the controller assures that the colors of pixels displayed using two different display technologies are identical.